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Olivier Biot
Amused
*****

Reged: 04/25/05

Loc: 51°N (Belgium)
Canadian Telescopes 152 F-5.9 Acromatic Refractor
      #4914228 - 11/13/11 05:26 PM

CT152 F-5.9 Acromatic Refractor from Canadian Telescopes​.com

By Warren Maguire.


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Russ S.
super member


Reged: 12/16/08

Loc: Low Country, SC
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Olivier Biot]
      #4916099 - 11/14/11 06:37 PM

Warren - Curious why you chose the 3" focuser over the 2", what are the benefits or advantages?

Thanks,
Russ


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Russ S.]
      #4919157 - 11/16/11 02:53 PM

Russ: To answer your question the 3" focuser has two advantages over the 2" focuser that I wanted. The larger diameter draw tube allows the focuser to be racked in farther into the telescope with out intercepting the light cone comming from the objective lens. The draw tube on my telescope is 4" long and will bring any eyepiece to focus, including a bino-viewer. The 2" draw tube is much shorter and requires an extension tube to be added to bring some eyepieces to focus. The 2nd advantage is payload capacity. the 3" has an 8.8 pound capacity. The 2" has around a 4.5 pound capacity. There is one other factor. Appearence. The 3" focuser looks great on this scope!! Warren

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geminijk
scholastic sledgehammer


Reged: 04/03/08

Loc: TN
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4923180 - 11/18/11 05:55 PM

Warren,

Love that review. Thing looks very big for a 6", really much bigger then the 102 on top, I initially thought it was a 80mm. Enjoy that beautiful scope!

John

Edited by geminijk (11/18/11 05:55 PM)


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: geminijk]
      #4923262 - 11/18/11 07:05 PM

John: Thanks for the kind words. I'm glad you liked the review. Since submitting the review in July (C.N. took almost 4 months to publish it!) I have used the scope many times and I'm really happy with it. Warren

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Rich
member


Reged: 01/21/06

Loc: Seattle
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4923713 - 11/19/11 01:36 AM

Warren,
Enjoyed your review and pictures. I'd love to hear more observing experiences, especially what you've found in terms of wide field views with this scope. Planets are always interesting, however I'd think this scope's forte will be the wide fields we usually only see in smaller scopes (like your 102), and with 6" of light gathering it must be a great rich field scope? It has the same focal length as my 100mm ED, but something like double the light gathering, so it intrigues me.
Thanks,
Rich


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Rich]
      #4924764 - 11/19/11 05:55 PM

Rich: Glad you liked the review. Your question about wide field views with this scope is well taken. I've seen some amazing sights with it that are impossible with my Meade 10" S.C. My Meade 40mm SW eyepiece produces a big 3 deg field at 23 power which allows me to view big open clusters like the Pleiades and the Beehive. Both of these clusters are a nice sight in my 102, but in the CT152 they are breathtaking! Along with the brighter stars in these clusters are dozens of fainter stars which are not visible in smaller scopes. The wide field gives a wounderful 3D impression of the clusters floating in space. Another nice use for the low power/wide field is to compress difuse objects to increase surface brightness. This works especially well with M31. Though smaller it seems just as bright as my 10" S.C. shows it at 63 power. I've also seen M81, M82 and NGC2976 all in the same field for the first time. My 102 doesn't show NGC2976 but the 6" does. For a real treat I just randomly point the scope at the Milky Way with the 40mm SW. What a sight! It seems like thousands of tiny pin point stars are visible! I hope this gives you a better idea of this scopes wide field performance. Warren

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Rich
member


Reged: 01/21/06

Loc: Seattle
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4925435 - 11/20/11 03:43 AM

Warren,
Good stuff, thanks for reporting your experiences.


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amirab1
member


Reged: 04/08/09

Loc: Israel
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Rich]
      #4927533 - 11/21/11 10:14 AM

Hi Warren

Enjoyed your report.
What is your experiance with splitting double stars using high magnification especialy with an hige magnitude primery - is there a significant CA?

Looks like a fine scope.


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: amirab1]
      #4928147 - 11/21/11 04:15 PM

Hello Amir
I don't have a complete answer for your question yet. Before getting the CT152 I only had a passing interest in double stars. I recently bought The Cambridge Double Star Atlas so I can get more into viewing them next Spring and Summer. I can tell you that viewing the popular doubles like Albireo, Cor Caroli, Mizar, the Double-Double, etc. there is vertually no CA, except for Mizar. At 2.2 mag it did show a little CA, but when I used my Baader Fringe Killer filter on Mizar the CA did not show. When viewing very bright stars such as Vega, Altair, Arcturus and the planet Jupiter, the CA is fairley significant. Using the Baader filter gets rid of about 50 to 60 percent of the CA. I made an aperture mask 4.5 inches in diameter to see what effect it would have. The mask effectively makes the scope into an F-8. By using the mask and the Baader filter together I got very good results. The CA on the bright stars was cut by 90 percent or more and on Jupiter I coudn't see any CA! In the future when trying to split a close double with a bright primary I'm probably going to have to use the mask and filter. I hope this gives you a better idea of this scopes CA issues. Warren


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mattyfatz
Carpal Tunnel
*****

Reged: 12/27/06

Loc: Boise Idaho
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4928640 - 11/21/11 09:47 PM

Warren,
I really enjoyed your article. I have been eyeballing the AT (hands on optics) version for a while now. I am a big fan of big wide field views of DSO's. I have been smitten with the ES152 for some time as well, but your review as well as other comments have led me in this direction. Thank you for all of the great photo's as well.
-Matt


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: mattyfatz]
      #4928841 - 11/22/11 12:21 AM

Matt:
I really enjoyed reading your comments. You sound just like me! When I decided to buy a short focus 6" acromatic refractor it was the Explore Scientific AR152 that I was considering. But then I came across two reviews that changed my mind. Scopereviews.com has a head to head review (by Ed Ting) of the AT152 and the Exp. Sci. AR152, complete with pictures of both scopes side by side. If you haven't read this review go to their website, on the home page scroll down to review #P-26 and click on it. The review that finally sold me on this scope was Larry Carlino's review of the AT152 on this website. When I discovered that Canadiantelescopes.com was selling the same scope (as the CT152) with the 3" focuser I couldn't resist. I don't think you can go wrong with any of these scopes. It's just a matter of how much you want to spend.
Warren


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mattyfatz
Carpal Tunnel
*****

Reged: 12/27/06

Loc: Boise Idaho
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4929688 - 11/22/11 03:04 PM

Thanks for the info!

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AllanF
journeyman


Reged: 11/23/11

Loc: Green Bay, WI USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: mattyfatz]
      #4952437 - 12/05/11 10:56 PM

Warren:

Just wondering if you are happy with the Celestron CG5-GT mount? I am guessing that the advertised 35# payload capacity has a decent safety factor.


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #4953672 - 12/06/11 05:41 PM

Al:
The short answer to your question is yes, I am happy with the CG5-GT mount. But there were problems that had to be solved before I was satisfied. One of the problems (mentioned in my review) is the Vixen type saddle supplied with the mount. This is the weak point when it comes to this mounts payload capicity. The all up weight of my telescope system is about 34 pounds. The thought of mounting my telescope on the CG5 saddle was just plain scary. If you look at the picture of the CG5 saddle in my review, you'll see 2 teeth about 2 1/2 inches apart on one side and a screw lock on the other side. These 3 contact points are all you have to carry the weight! Every time you use the screw lock to mount the scope your going to make gouge marks in your dove tail bar. Over a period of time this will really tear it up. The 6 inch ADM replacement saddle solves this problem. With the new saddle the mount lives up to it's advertised 35 pound payload capicity with no problem. The 2nd problem I ran into was with the power cord supplied with the mount. The cord comes with a nice screw lock feature to hold the cord tightly in place when pluged in. But you can't use it! The socket on the drive base is to shallow. You can't push the power cord plug far enough into the socket to engage the screw lock. With out the locking feature the power cord plug is to loose and the drive base looses power intermitently. This blows the mounts alignment every time it happens, which forces you to redo the alignment. A major annoyance. I bought a new power cord which I had to jury rig to fit tightly in the socket to solve the problem. The last problem I found was with the lubrication of the mounts drive gears. From other reviews I read some buyers complained that there wasn't enough grease on the gears or that it was to stiff in cold weather. I decided to take the covers off my drive base to check. To my shock I found no lubrication! The gears were running metal to metal! I used a light wheel bearing grease I bought at Auto Zone to solve the problem. Now that I have solved these problems the mount has performed very well. After balancing the scope it carries the scopes weight with ease. When using the 2 star alignment method plus 2 additional stars the go to pointing accuracy has been excellent. I hope this gives you a better idea of this mount. If you have any more questions let me know.

Warren


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AllanF
journeyman


Reged: 11/23/11

Loc: Green Bay, WI USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4972006 - 12/18/11 04:28 AM

Warren,

A question on the mount - I have the CT152 and the "outside" dimension of the carry handle included appears to be about 9.5" which you replaced with the mini dove tail bar. Just wondering which dove tail bar you ordered from ADM?

Thank you very much for generously sharing - making it almost too easy. The tip regarding the power cord is another that will save alot of frustration.


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #4972883 - 12/18/11 04:55 PM

Al:
Glad I can be of some help. Regarding your question about the mini dove tail bar, if you have checked the ADM web site you have already discovered they don't make a bar 9.5" long. What I did was buy a mini dove tail bar for a 8" Celestron SCT. This bar is 13.5" long. To make it work I cut about 4" off using a 32T (32 teeth per in) hack saw. I used a fine flat file to make it even and smooth. I then drilled a 1/4" hole for the mounting screw. I used a 1/2" drill bit to counter sink the mounting hole so I could use a flat head mounting screw that would be flush with the top of the mini dove tail bar. On the other end of the bar simply use the 1" slotted hole that is provided. This turned out very nice and looks professional. There is another way to solve this problem that doesn't require any cutting or drilling. This method would require you to buy a Meade LXD mini dove tail bar that is 11" long and a VDUP11 Vixen dove tail bar that is also 11" long. You could use the VDUP11 to replace the Vixen bar that came with your scope and the LXD mini dove tail to replace the carry handle. These bars should bolt right up. This will increase the distance between your scopes cradle rings from 9.5" to 11" but that shouldn't be a problem. The down side is it will cost an extra $59. If you have any other questions don't hesitate to ask.

Warren


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AllanF
journeyman


Reged: 11/23/11

Loc: Green Bay, WI USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #4995513 - 01/01/12 10:49 AM

Warren,
I have the CT 152 set up and balanced on a CG5-GT mount thanks to your tips. Anthony from ATM cut the dovetail bar to 9.5" which made it even easier. Just wondering it taking the cover off the drive base was a difficult project? Even indoors the gears seem to grind a bit even without the larger finder scope mounted. One last question from this relative beginner - what 2" eyepieces would you think are minimum to enjoy this particular scope? I have a decent Garrett SWA 32mm so far.


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #4996243 - 01/01/12 06:29 PM

Al:
Nice to here from you again. It sounds like your telescope and mount set up is very close to what I have. Your going to love using it when you get warmer weather. Regarding your question on the drive base covers, the declination drive cover is easy to take apart and reinstall. This is the cover that is directly under the scope when it is mounted. To check the gears for lubrication I would take this cover off first. If you find the gears are well lubricated you can probably assume the right ascension drive is ok as well. But, if you find no lubrication, like I did, you'll be forced to remove the clam shell covers on the R.A. drive to check. This is the cover with all the sockets for the power cord, hand control, etc. This is a difficult job because of all the wiring and components they cramed in there. If you decide you need to take the R.A. covers off, try to note the position of everything in there as you SLOWLY pull the covers appart. I wasn't carefull with this and it took me over an hour to figure out how it all went back together. Everything has to go back the same way it came out or you won't be able to reclose the covers! As to your question on eyepieces, I've found that I use my Meade 2" 14mm U.W. by far the most on this scope. It gives 64 power with a 1.3 deg field which is great for many globular & open clusters, nebula and galaxies. For really wide field views I use my 2" Meade 40mm S.W. which gives 23 power with a big 3 deg field. Your 32mm should work well in this catagory. For higher powers I use my Meade 8.8mm U.W. and my Explore Scientfic 4.7 U.W. which gives 102 and 191 power. I also have a short 2" Antares 1.6 power barlow which I bought from scopestuff.com. I have found that these 4 eyepieces plus the barlow pretty much covers all my viewing needs, they give me a range of powers from 23 to 306. As always, if I can be of any more help with questions let me know.

Warren


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seeindoubles
super member


Reged: 01/15/12

Loc: Pacific Northwest-Oregon
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Olivier Biot]
      #5027753 - 01/19/12 11:15 PM

I read Larry Carlino's review and having seen the AT152, knew I had to get one. My experiences have been mirrored by Warren's review. This is one huge bargain. Mine has the 2" Crayford instead of the 3". Rotation not quite as rough. Views of Jupiter were best I have had, even through my C11.

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MKV
Carpal Tunnel
*****

Reged: 01/20/11

Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Olivier Biot]
      #5030259 - 01/21/12 11:45 AM

Warren, if your 10-inch Meade SC doesn't split 1.1 arsec doubles, sell it! The fact that your 10-inch Meade seems to have trouble with it doesn't mean 5-inch refractors are better than 10-inch reflectors, as newbies may come to believe by reading your article, even if that was not your intent. That is true only if the larger telescope is poorly made, or poorly maintained.

My experience with A. Jaegers' 5-inch and 6-inch f/5 objectives (no longer available) is very similar to yours (except they used to cost far, far less). The c.a. observed never appeared as bad as the theory presents it. But that is true of other aberrations as well. The 5-inch f/5 Jaegers lens photographically resolved M13, and visually with averted vision.

Your article is an affirmation that short-focus achromats can look good, are easy to transport and set up and give decent very views visually and photographically.

Mladen


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: MKV]
      #5031408 - 01/21/12 11:51 PM

MKV:
I certainly hope my review didn't leave the impression that a 6" refractor is better than a 10" SCT or 10" reflector. That was not my intent. Each type of scope has it's own unique advantages. Even though my Meade 10" SCT is 25 years old, it is in better condition now than when I bought it new. I added computer controls and Bob's Knobs (for easy collumation). From Peterson Engineering I installed an upgraded focuser, to limit mirror shift, and a larger 2" visual back. This scope has performed well and still looks new. My two failed attempts to split Porrima with this scope were with it set up on a large paved parking lot (at Eastman Lake) about an hour after sunset after a hot day. There was still some heat radiating from the pavement that was affecting seeing on both of these ocassions. The theoritical resolution of a 10" SCT is around a 1/2 arc second but thats under ideal conditions, which doesn't happen very often. The night I split Porrima with my 6" CT152 refractor I was set up on grass in my front yard. A much better situation. If I had my 10" set up that night in my front yard I'm pretty sure it would have split Porrima also. Though not as easly as the 6" refractor did it. One thing I've learned since buying the CT152 is that no 10" SCT is going to produce the tiny pin point star images that a good 6" acromatic refractor can. When it comes to faint DSO's any good 10" will beat a 6" refractor because of its greater light gathering power. I hope this clears up any misunderstanding my review may have caused. Thanks for your interest.

Warren


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davidpitre
Post Laureate
*****

Reged: 05/10/05

Loc: Central Texas
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: MKV]
      #5032004 - 01/22/12 11:20 AM

Quote:


My experience with A. Jaegers' 5-inch and 6-inch f/5 objectives (no longer available) is very similar to yours (except they used to cost far, far less)




In 1960s Jaegers' catalogue a 6" f/10 in a cell ran $175. .
If we take the date as 1965, it is roughly $1250. today. That is for the objective and cell only. So we are paying somewhere around half the price for these 6" f/5 Chinese objectives as a Jeagers 6" f/10 cost around 45 years ago.
I don't know if Jaegers made a 6" f/5 at the time, but a 5" f/5 objective in cell cost $97.50 in the 1960s. That is around $700. today.


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JS999R
super member


Reged: 12/07/11

Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: seeindoubles]
      #5034642 - 01/23/12 09:51 PM

After reading Ed Tings, Warrens and Larry's reviews, I'm trying to somehow bring a CT152 home without my wife knowing. This is going to take some time to figure out and I may have to sell my Vixen 102 to do it. Believe it or not I don't think she will notice the difference in size between the two. I've done this a couple times in the past with motorcycles, I'm sure I can pull it off with a telescope.

What is the best way to attach the finder scope mount? Are there screw holes available on the focuser like the GSO focusers? The total deal will be over a grand counting the finder and diagonal. No doubt I'll have to pick up a good wide field 2" for it.


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Robo-bob
sage


Reged: 05/02/05

Loc: Central Alberta
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5034712 - 01/23/12 10:42 PM

Quote:

After reading Ed Tings, Warrens and Larry's reviews, I'm trying to somehow bring a CT152 home without my wife knowing. This is going to take some time to figure out and I may have to sell my Vixen 102 to do it. Believe it or not I don't think she will notice the difference in size between the two. I've done this a couple times in the past with motorcycles, I'm sure I can pull it off with a telescope.




You sir, are my new hero. All hail the god of marital harmoney. Seriously though, I am going to give this a try.

Back on topic, has anyone had a chance to compare this scope with one of the older Antares 6" Achros? Just wondering how the CA would compare. Anyone?


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5034798 - 01/24/12 12:10 AM

JS999R:
I had a good laugh reading your post. I'm not to optimistic that you can fool your wife into not noticing the difference in size between a CT152 and a Vixen 102. If you look at the pictures in my review the Celestron mounted on top of the CT152 is a 102! The size difference is HUGE! But if you fooled her with motorcycles in the past, maybe you can pull it off. Please let us know, one way or the other, in a future post. I would love to know.

As far as mounting a finder scope goes you should have no trouble. The CT152 3" focuser has two threaded holes on both the upper right side and upper left side. You can use these holes to install a standard shoe which will accept a finder scope bracket for a 50mm finder scope. Good luck on getting the scope.

Warren


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Cyclop_si
professor emeritus
*****

Reged: 03/13/08

Loc: Slovenia
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5034924 - 01/24/12 03:17 AM

Quote:

After reading Ed Tings, Warrens and Larry's reviews, I'm trying to somehow bring a CT152 home without my wife knowing. This is going to take some time to figure out and I may have to sell my Vixen 102 to do it. Believe it or not I don't think she will notice the difference in size between the two. I've done this a couple times in the past with motorcycles, I'm sure I can pull it off with a telescope.





I am sure you will manage with this trick. She is successful using same trick with her shoes as well....


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davidpitre
Post Laureate
*****

Reged: 05/10/05

Loc: Central Texas
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5035055 - 01/24/12 08:04 AM

Quote:

After reading Ed Tings, Warrens and Larry's reviews, I'm trying to somehow bring a CT152 home without my wife knowing. This is going to take some time to figure out and I may have to sell my Vixen 102 to do it. Believe it or not I don't think she will notice the difference in size between the two. I've done this a couple times in the past with motorcycles, I'm sure I can pull it off with a telescope.





I believe it from similar experiences.
Some tips from a pro:
Save cash and buy a USPS money order. No records to account for. Then have it shipped for pick-up at the central UPS service center or a buddy's house.


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Joe Ogiba
Postmaster
*****

Reged: 02/14/02

Loc: NJ USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5036189 - 01/24/12 08:44 PM

Quote:

Russ: To answer your question the 3" focuser has two advantages over the 2" focuser that I wanted. The larger diameter draw tube allows the focuser to be racked in farther into the telescope with out intercepting the light cone comming from the objective lens. The draw tube on my telescope is 4" long and will bring any eyepiece to focus, including a bino-viewer. The 2" draw tube is much shorter and requires an extension tube to be added to bring some eyepieces to focus. The 2nd advantage is payload capacity. the 3" has an 8.8 pound capacity. The 2" has around a 4.5 pound capacity. There is one other factor. Appearence. The 3" focuser looks great on this scope!! Warren




Hi Warren,

I plan on getting the CT152 this spring and use it with my Denk II binoviewer. I seen that Larry Carlino mentioned his scope "has significant “in-focus” to accommodate a binoviewer " so does the 3" focuser also have significant in-focus like the 2" focuser ?

Joe


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davidpitre
Post Laureate
*****

Reged: 05/10/05

Loc: Central Texas
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5036352 - 01/24/12 10:44 PM

Quote:

Quote:

Russ: To answer your question the 3" focuser has two advantages over the 2" focuser that I wanted. The larger diameter draw tube allows the focuser to be racked in farther into the telescope with out intercepting the light cone comming from the objective lens. The draw tube on my telescope is 4" long and will bring any eyepiece to focus, including a bino-viewer. The 2" draw tube is much shorter and requires an extension tube to be added to bring some eyepieces to focus. The 2nd advantage is payload capacity. the 3" has an 8.8 pound capacity. The 2" has around a 4.5 pound capacity. There is one other factor. Appearence. The 3" focuser looks great on this scope!! Warren




Hi Warren,

I plan on getting the CT152 this spring and use it with my Denk II binoviewer. I seen that Larry Carlino mentioned his scope "has significant “in-focus” to accommodate a binoviewer " so does the 3" focuser also have significant in-focus like the 2" focuser ?

Joe




Yes. The 3" focuser has a lot of spare in-focus. As he stated, it should bring most bino-viewers to focus.


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: davidpitre]
      #5036442 - 01/24/12 11:53 PM

To: Joe Ogiba
Hi Joe,

David Pitre's answer to your question above is correct. Both the AT152 and the CT152 have enough in focus to bring most bino viewers to focus. The nice thing about the 3" focuser is that its 4" long draw tube can be racked all the way in without interfering with the light cone comming from the objective lens. Yet, it can still be racked out far enough to bring any eyepiece to focus. The 2" focuser has to be shorter to avoid interfering with the light cone when racked in. However, it can't be racked out far enough to bring some eyepieces to focus unless an extension tube is added. Another advantage of the 3" focuser is its greater payload capicity of 8.8 pounds. This will come in handy when your using a heavy bino viewer with two eyepieces.

Warren


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5036783 - 01/25/12 09:40 AM

Hi Warren,

Thanks for that info, I will be ordering it with Woodland Hills Telescopes like you did in about a month.

Joe


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zawijava
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5038756 - 01/26/12 10:36 AM

Quote:

After reading Ed Tings, Warrens and Larry's reviews, I'm trying to somehow bring a CT152 home without my wife knowing. This is going to take some time to figure out and I may have to sell my Vixen 102 to do it. Believe it or not I don't think she will notice the difference in size between the two. I've done this a couple times in the past with motorcycles, I'm sure I can pull it off with a telescope.




Who's fooling who ......she likely notices everything


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: zawijava]
      #5039103 - 01/26/12 01:42 PM

BTW anyone know if Ed Tings CT152 review is online ? I looked on his website and did not see it.
Read the full review (PDF) by Terence Dickinson (Editor in Chief) in SkyNews Magazine here


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WarrenM
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Reged: 07/27/11

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5039160 - 01/26/12 02:08 PM

Joe:
To read Ed Tings review of the AT152 go to scopereviews.com. On the home page scroll down to review #P-26 and click on it. This is actually a head to head review of the AT152 and the Explore Scientific ES152 with pictures.

Warren


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northernontario
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: seeindoubles]
      #5039687 - 01/26/12 06:48 PM

Good stuff Warren.

I read this awhile back and would like to take this opportunity to thank you for the focuser lubrication tip.

I too found it rather sticky and noisy. Your quick fix works like a charm.

jake


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5039826 - 01/26/12 07:53 PM

Quote:

Joe:
To read Ed Tings review of the AT152 go to scopereviews.com. On the home page scroll down to review #P-26 and click on it. This is actually a head to head review of the AT152 and the Explore Scientific ES152 with pictures.

Warren



Thanks Warren, I see it looks like the AT152 that is sold by Hands on Optics . BTW they have an upgraded version with Stellarvue 2.5" Rack and Pinion dual speed focuser .

Joe


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: northernontario]
      #5039837 - 01/26/12 08:00 PM

Thanks Jake.
Glad I could be of some help.

Warren


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JS999R
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5061528 - 02/08/12 03:10 AM

I'm getting closer to my objective of saving up enough to buy the CT152 (thats if I don't change my mind and just buy a big yard cannon DOB). The nice thing is I don't have to sell my Vixen 102 to do it. But now that puts a damper on my strategy to switch scopes as part of my cover to bring the new scope home, so its work in progress. As a partial cover story to my wife, I've been selling off a few motorcycle parts and she is aware of that, I make sure she knows this and also inflate the selling figure by at least 100%. She doesn't have a problem seeing this as a separate financial issue, so what I make off the sales is mine. If and when I do buy another telescope, I'll tell her it's used and the seller was desparate to sell. Worn out story, but it still works like negative campaign ads do. If the CT152 costs approx $1,000, I'll tell my wife it cost $425. At this stage of my plan I'm in good shape in terms of the psychology preparation. I've started dropping hints that I'm looking at a potential "smokin" deal on a telescope and have deferred the question well enough, "why do you need two of them?" Actually I think this might be easier than I anticipated because it doesn't have anything to do with buying another motorcycle. The days of secret 1099s and keeping a third bike at a buddies house are over. I never felt that guilty about not being truthful, but I don't miss the stress of keeping the bonus bucks 1099 situation a secret for a couple years. I did what I had to do to pursue my hobbies, without them life would be boring, right?

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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5062462 - 02/08/12 03:31 PM

JS999R:
You sure are a resourceful person when it comes to pursuing your hobbies. I'm glad to here your not going to try to fool your wife into thinking a CT152 is a Vixen 102. That would have been tough to pull off. I think your knew plan has a much better chance of success. Your definitely right about one thing. Life would be boring if a guy couldn't have one or two hobbies. I hope you get your scope.

Warren


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doctordub
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5062611 - 02/08/12 04:49 PM

The key is Telescope cases. The soft case bellow holds the AT 152:

http://www.music123.com/productDetail/productDetail.jsp?entProductId=549688

When I purchased my second telescope my wife encouraged me to give away my Celestron 114 GT. I did. Now I store the telescopes in protective cases that can be stoered and moved at will.

CS
Jonathan


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Robo-bob
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5064025 - 02/09/12 03:34 PM

Quote:

I'm getting closer to my objective of saving up enough to buy the CT152 (thats if I don't change my mind and just buy a big yard cannon DOB). The nice thing is I don't have to sell my Vixen 102 to do it. But now that puts a damper on my strategy to switch scopes as part of my cover to bring the new scope home, so its work in progress. As a partial cover story to my wife, I've been selling off a few motorcycle parts and she is aware of that, I make sure she knows this and also inflate the selling figure by at least 100%. She doesn't have a problem seeing this as a separate financial issue, so what I make off the sales is mine. If and when I do buy another telescope, I'll tell her it's used and the seller was desparate to sell. Worn out story, but it still works like negative campaign ads do. If the CT152 costs approx $1,000, I'll tell my wife it cost $425. At this stage of my plan I'm in good shape in terms of the psychology preparation. I've started dropping hints that I'm looking at a potential "smokin" deal on a telescope and have deferred the question well enough, "why do you need two of them?" Actually I think this might be easier than I anticipated because it doesn't have anything to do with buying another motorcycle. The days of secret 1099s and keeping a third bike at a buddies house are over. I never felt that guilty about not being truthful, but I don't miss the stress of keeping the bonus bucks 1099 situation a secret for a couple years. I did what I had to do to pursue my hobbies, without them life would be boring, right?




I am in awe. We are in the presence of a master. Do me a favor and keep these wonderful anecdotes coming. They are a tremendous resource to those of us who are matrimonially challenged.


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5064032 - 02/09/12 03:38 PM

My CT152 was shipped out on Monday so I might get it by Saturday if it is handled like Priority Mail with the USPS. USPS tracking shows this:
Priority Mail International Parcels
Depart USPS Sort Facility
February 08, 2012
SAN FRANCISCO, CA 94125


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WarrenM
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Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5064116 - 02/09/12 04:30 PM

Joe:
Congratulations on your purchase. I wish I could be there when you open that box for the first time. If your like me it's going to blow you away when you finally see it. Unfortunatly, the next week is going to seem like the longest week of your life. But it's worth the wait!!

Warren


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5064214 - 02/09/12 05:53 PM

Hi Warren,

I too will be trying to keep my wife from knowing I purchased another scope. I have so many scopes I don't think she would notice it from the others but if I have to go to the Post Office and pick it up she might find out. When you received yours was there any Canada customs duties to pay ?

Joe


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5064619 - 02/09/12 10:31 PM

Hi Joe:
Oh my god, not you too! Does everybody out there have to hide there scope from their wife? From that list of scopes your showing, hopfully, she won't notice one more. Regarding the customs duties, I didn't have to pay anything. My scope did spend 2 days in customs in Seattle Washington. They opened the box to inspect the contents and resealed it. They left a printed flyer in the box stating they had done this. They apparently were careful because my scope arrived in perfect condition. Customs may cause a 1 or 2 day delay in your scopes arrival. But, like I said above, it's worth the wait.

Warren


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5065162 - 02/10/12 09:50 AM

Hi Warren,

Thanks for that info. It does look like my scope did spend some time in customs and left late on Wednesday. Here is what USPS tracking shows:
Priority Mail International Parcels
Depart USPS Sort Facility
February 08, 2012
SAN FRANCISCO, CA 94125
International Parcels
Processed through USPS Sort Facility
February 08, 2012, 7:25 pm
SAN FRANCISCO, CA 94125
Processed Through Sort Facility
February 07, 2012, 7:22 pm
ISC SAN FRANCISCO (USPS)
Origin Post is Preparing Shipment
Processed Through Sort Facility
February 06, 2012, 8:07 pm
VANCOUVER APT, CANADA
Acceptance
February 06, 2012, 4:27 pm
CANADA

Joe


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5065640 - 02/10/12 02:57 PM

Warren, you are correct, this is one great looking scope ! The only bad news is the mailman delivered it to my wife since she was in the living room and I was in a back room on my PC. The false color is not too bad for a F5.9 achromat. This will be a great rich field scope with my 40mm Pentax XW. Here are photos of it with 21mm Ethos, 31mm Axiom, 40mm Pentax XW, 21mm Ethos/45° correct image prism diagonal and a telephoto shot from about 200ft away.










Thanks for all of the CT152 info you gave, this is one great scope deal.

Joe


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5066220 - 02/10/12 08:58 PM

Joe, thanks for the photos of your new CT152. With the eyepieces you have your going to have some awesome deep sky views. Enjoy! Warren

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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5066736 - 02/11/12 07:46 AM

Warren, today is the new scope curse, it's snowing.

Joe


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5067294 - 02/11/12 02:03 PM

Joe, the same thing happened to me last May when I got my scope. We had the second rainist May ever recorded here in central Calif. There is just no way to win!

Warren


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stevew
Now I've done it


Reged: 03/03/06

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5067363 - 02/11/12 03:12 PM

I know these are rich field scopes, but can any owners comment on the planetary performance of these beauties...

Steve


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5067565 - 02/11/12 05:34 PM

Quote:

I know these are rich field scopes, but can any owners comment on the planetary performance of these beauties...

Steve



Hi Steve,

Warren did view Saturn in his CT152 review and Larry Carlino viewed Jupiter with MV-1 filter in his
review of the Astro Telescopes version of the same scope with 2" focuser.

Joe


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stevew
Now I've done it


Reged: 03/03/06

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5067716 - 02/11/12 07:38 PM Attachment (46 downloads)

Joe, thanks for the links.
I'd like to get one of these scopes, but I already own a beautiful Antares 152 F-6.5, so I'm having a hard time justifying it.
Still, you never know.......


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5067858 - 02/11/12 09:26 PM

Steve:
In my answer to amirab1's post above I go into some detail about the CT152's CA issues on bright stars and Jupiter. If you haven't read it just scroll up to it. As I state above the CA on Jupiter is there but not real bad. Even with the CA, details on Jupiter are still clear and well focused. I made an aperture mask 4 1/2 inches in diameter. The mask converts the scope into a 4 1/2 inch F-8. Using the mask decreases the CA by about 70%. What amazed me was the results I got when I used my Baader Fringe Killer filter and the mask together. The CA was completely elliminated! With this set up I had some of the best views of Jupiter I have ever seen. I saw a shadow transit where the shadow wasn't just a dark spot, but a razor sharp black dot. The great Red Spot, which is kind of tough since it faded, was easy. The moons were tiny discs not fuzzy dots. You might consider trying something like this with your Antares scope. You really have a great looking scope. Its going to be tough trying to justify buying another one similar to it.

Warren


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JS999R
super member


Reged: 12/07/11

Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5068220 - 02/12/12 02:07 AM

I've always contended, the walls have ears. Tonight was a perfect example of that old saying. I went outside and noticed Mars about 10 degrees above the horizon, perfect. I went inside briefly to confirm it was Mars via Stellarium. My goal tonight was to view Mars for the first time. The sky looked good except for some clouds forming from the s/w, funny, they weren't there when I first caught a glimpse of Mars.

I did my obligatory 3 to 4 trips to set up my refractor. I went about setting things up, I didn't pay attention to the sky, but when I looked up the whole sky was clouded over! It took no more than 5 to 6 minutes for them to roll in, viewing session over.

I decided to leave the scope outside to cool off in the hope the clouds would move along as fast as they came in. Both my wife and daughter were in the kitchen/family room area watching TV and playing on the laptop. The wife went to the bathroom and that was when I decided to tell my daughter that I was thinking about buying another telescope. I told her "quietly" the scope was hugh, bigger than the Vixen, but I haven't made the deal yet because it was a "refurbished" model and I was still negotiating. I was keen enough to add that because she has busted me to my wife in the past so I assumed she would do it again so I fed her some disinformation. Just then I heard my wife yell from the bathroom, "I heard that!". Opps, busted, but not flushed or heart beating busted I've experienced before. Previously I set her up with the buying/selling scheme of items and no longer useful motorcycle parts. So its not like it will come out of our savings account, something she watches over like a gator and her eggs. She came out of the bathroom and said, "you don't see me buying things for myself" I've heard this before and I always tell her to go spoil herself since I think she should. I believe she doesn't because in her mind that might open the door for me to do the same. Of course I know she might be scamming me as much as I'm scamming her, so we are even on that score. I replied, "you know its coming from the stuff I've sold, I'm not using our savings". I went on to tell her its a refurbished scope and I'm currently negotiating for it and The price wasn't where I think it should be, bla, bla bla. With that she said nothing and walked back to her "perch" in the family room to continue watching TV. I went back to my home office feeling victorious because she didn't pursue the issue after my response. At this time I'm clear to move forward, something I already started doing yesterday.

When all this started I was in a state of indecision on what telescope to buy, a very common predicament to be in so I didn't feel alone. My desires ran from a big yard cannon Dob, an APO, and ultimately between the ES AR152 and the AT/CT152. Just like Warren I wanted the 3" focuser, not that I would load it up with anything, it just sounded like a more advanced model and maybe it had an edge on performance. This is a visual telescope and if I wanted to dabble with AP anytime soon my Vixen is very capable eventhough its an achromat. At least at my level which is the bottom rung of experience. The optics on the Vixen are so good I can't see any detectable CA on either the Moon or Jupitor, only on bright stars like Rigel or Sirius.

The AR152 comes in a ready to view OTA package for only $699. The CT152 OTA comes less the diagonal and finder and is priced at $850. At this time the Canadian Dollar and US Dollar are all square, so a buck is a buck. I figure by the time I pick up a finder and diagonal, I'll be into the CT152 around $1,070, about $370 more than what the AR152 costs. For many that is too wide a spread and they opt for the AR152. Besides the telescopes are so very close in comparison tests a person like myself might not notice the difference in performance. Good reasons to save money and buy the AR152. And now the BUT. After reading the reviews I mentioned before, in particular the side by side comparison by Ed Ting, there are enough points, albeit subtle in some cases in the CT152 column that my vote went for it. The overall performance and attention to detail in worksmanship closed the gap in terms of the spread created by the difference in price. Another factor was the shorter length of the CT152, it is a chubby fellow. But that tells me it might slew around without conflict too. I'm also looking at a long term relationship with the telescope, my scopes aren't one night stands. As Ed Ting did, you could argue the AR152 is the best bang for the buck, but the close enough differences were not enough to sway me. Actually I would wonder what would I be missing if I didn't buy the CT152.

Yesterday I made the commitment to go with the CT152 when I bought a nice quartz mirror GSO diagonal through ScopeStuff. I had intended on going with the Istar diagonal, have read good things about it and the price point was excellent, but the price on the upgraded quartz GSO was only $119 with no tax or shipping fees. Actually I would not object to paying taxes on the item, the government needs the money to keep our space telescopes operational. Next and very soon I'll pick up a finder, likely another GSO product unless Vic Maris at Stellervue has a blem finder he will sell me. I'm fortunate to live about 15 minutes from his toy store. He has helped me out in the past with discontinued or used demo pieces at good prices. The GSO finder is a right angle one priced at only $78. Another item comes from Warren's recommendation to upgrade the CG5's saddle, I agree, the factory saddle is way to short and it eats your dovetail. I'll be ordering a longer and better saddle from ADM. Thats it ladies and gentlemen, a relatively painless process compared to previous buying scenarios and man, do I have a couple of them that are down right funny. I've earned the nickname "horse trader" on a popular Ducati motorcycle website. In my signature there are eight motorcycles I have bought and sold over the last seven years; each one had a special story, not one in terms of what my wife understood at the time was the truth, the whole truth and nothing but the truth.

Hopefully I'll place my order for a new CT152 by early this coming week. I have to get a buddy to transfer some funds into my "fun fund" Paypal account. I'll report back as things happen and thanks for the responses and especially the words of encouragement. I wouldn't recommend sharing this with your wife; its a guy thing, besides, that would wreck the fun!


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WarrenM
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Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: JS999R]
      #5069017 - 02/12/12 02:47 PM

JS999R:
Holy cow!! If buying a telescope was this hard for the rest of us, amateur astronomy would never have made it as a hobby. But, as Robo-bob posted earlier, we truely are in the presence of a master! You have redefined the word perserverance. About 8 years ago I tried a similar ruse on my wife. I wanted an 80mm F-5 refractor to replace the finder on my 10" SCT. I knew I couldn't justify the purchase to her since I already had 5 scopes. Her birthday was comming up so I bought the scope for her as a birthday present under the guise of wanting her to come with me to star parties. She actually did come to one star party with the scope. But the mosquitos decided they liked her more than everybody else there. She lost interest and I ended up with the scope. It finally hit her about 3 months later and she accused me of buying the scope for me, not her. I, of course, denied everything. The nice thing about this plan is instead of buying flowers for your wife, you get to buy something really important. Maybe you should buy the CT152 for your wife. It's worth thinking about since you have tried just about everything else. What ever you end up doing I wish you luck!

Warren


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stevew
Now I've done it


Reged: 03/03/06

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5069134 - 02/12/12 03:54 PM

Quote:

Steve:
In my answer to amirab1's post above I go into some detail about the CT152's CA issues on bright stars and Jupiter. If you haven't read it just scroll up to it. As I state above the CA on Jupiter is there but not real bad. Even with the CA, details on Jupiter are still clear and well focused. I made an aperture mask 4 1/2 inches in diameter. The mask converts the scope into a 4 1/2 inch F-8. Using the mask decreases the CA by about 70%. What amazed me was the results I got when I used my Baader Fringe Killer filter and the mask together. The CA was completely elliminated! With this set up I had some of the best views of Jupiter I have ever seen. I saw a shadow transit where the shadow wasn't just a dark spot, but a razor sharp black dot. The great Red Spot, which is kind of tough since it faded, was easy. The moons were tiny discs not fuzzy dots. You might consider trying something like this with your Antares scope. You really have a great looking scope. Its going to be tough trying to justify buying another one similar to it.

Warren



Thanks Warren, I have tried various aperture stops on my Antares, and they do work well. Of course when masking it down to 4 inches it only gives the resolution of a 4 inch scope....
When using it at full aperture on the planets it does not show much blue/violet but does have quite a yellow cast to the planetary image, which I do not like. This is why I have been curious about the CT152 performance.
From the reports I have been reading I am still very tempted to get one. I realize that a short focus achromat is a specialized instrument that is not designed for serious planetary observation, but from what I have read so far the CT152 can do everything quite well.
Thanks for your thoughts on it.

Steve


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JS999R
super member


Reged: 12/07/11

Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5070740 - 02/13/12 03:47 PM

Warren, the ploy you came up with is the old tried and true strategy "I'm buying it for you for me". But it wouldn't work on my wife. It would be like buying her a can of wood putty for her birthday. It worked for you and I admire the fact you engineered it in your favor. Thats one mark in the "I have empowerment" column.

Minor glitch on the GSO diagonal purchase, Scope Stuff just notified me of a two week backorder and knowing what I know about backorder estimates, the actual ship date is usually longer than the estimate. So I cancelled the order and will likely pick up an in stock non quartz GSO diagonal from Agena for $100. The quartz model was $30 more so I passed on it. Oh, and Scope Stuff do charge tax so I was wrong on the no tax claim, no problem, the Hubble needs gas money.

A very nice owner of a AT152 saw my post in the wanted ads for either the AT152 or CT152, with preference for the CT152. He has a two owner AT152 that he will sell for $750 including shipping and Paypal fees. I thought about it for a moment but decided to pass on the offer. I felt $100 + tax more for the CT152 was worth it for the 3" focuser and more so the fact if any issues crop up I'll have someone to yell at.

So at this time is my plan to order the diagonal and GSO finder today and order the CT152 in a couple days once I get my buddy to transfer funds to my Paypal account. I should have the order in by Thursday at the latest and barring any transit problems with all three items, I should be doing a first light in a month or so. I say a month because of the new scope syndrome of cloudy skies that preceeds any purchase. But if all goes well the goods should arrive next week. Oh, I almost forgot, I have to pick up the larger saddle from ADM as well.


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5070793 - 02/13/12 04:30 PM

Quote:

Joe, thanks for the links.
I'd like to get one of these scopes, but I already own a beautiful Antares 152 F-6.5, so I'm having a hard time justifying it.
Still, you never know.......



Steve, I have the Celestron CR150 F8 with the stock 2" R&P focuser so it was not that big a decision on my part to get the CT152 F5.9 since there is a 300mm difference in FL and the 3" CT152 focuser is light years better. I was going to upgrade the focuser on my CR150 but I think I will keep it stock since I now have the CT152 and don't plan on using the CR150 as much now.

Joe



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davidpitre
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5073664 - 02/15/12 12:34 PM Attachment (109 downloads)

Can anyone tell me what the two screws in the middle of the image of this focuser on my CT 152 are for? They appear to be set screws. They are not for another finder base are they?
Someone here mentioned that the focuser can accept 2 finders.


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JS999R
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: davidpitre]
      #5073921 - 02/15/12 03:09 PM

Well, I tried to order the CT152 through Woodland Hills, but the Paypal function isn't working. They are talking to their webmaster about it. CC payment is out of the question for obvious reasons. Last week they had two instruments in stock, but they have been selling well so mine will be dropped shipped from Canada once the Paypal thing is resolved.

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JS999R
super member


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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: davidpitre]
      #5073928 - 02/15/12 03:14 PM

Quote:

Can anyone tell me what the two screws in the middle of the image of this focuser on my CT 152 are for? They appear to be set screws. They are not for another finder base are they?
Someone here mentioned that the focuser can accept 2 finders.




I believe as well that is what they are for, but a call to CT would confirm it. I had a question on the finder mount location because in the Ed Ting review the AT152's finder was mounted on the tube not the focuser. But another review had it on the focuser. Maybe mounting it on the tube is a personal thing, better clearance and less conflict with the diagonal/eyepiece? It might make a difference on which kind of finder you choose, right angle or straight through.


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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: davidpitre]
      #5074028 - 02/15/12 04:04 PM

David:
My CT152 has the same extra set of mounting holes. I assumed they were there so you could choose which side of the focuser you wanted to mount a finder on. The extra holes could also be used to mount a bracket for a laser. I mounted a laser on my scope, but I ended up using a threaded hole on the scopes rear cradle ring. The pictures labled fig.#1 and fig.#3 in my review show the laser mounted.

Warren


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JS999R
super member


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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5075917 - 02/16/12 05:53 PM

Success on placing the order through Woodland Hills. BTW, if you order anything from them and your sales tax in your local area is lower, you can request they use your tax rate instead. That is what I did, actually, it was brought up by the manager while I had questions regarding the Paypal issue and the not so free freight policy. The CT152 is an exception to their freight pre-paid for orders over $150 because the scope comes in from Canada. The freight policy mentions the fact the policy doesn't apply to some products, so its not like they are trying to pull a fast one on you. However, I did ask her why Canada is different than any other country, but I ceased pursuing that line of thought since I didn't want to open a can of worms. It is what it is and I'm grateful she offered the reduced tax assessment and the fact they are the only outlet offering the CT152 for sale here that I know of. That counts for something in my book.

I should have the accessory parts in advance of the telescope since it is now being drop shipped from Canada. Therefore, everything is looking up and I want to thank you Warren for being generous with your answers regarding this wonderful instrument. Needless to say its kind of cool that others are asking the questions for me, I just sit back and enjoy. I do want to get a couple of wide field 2" EPs. In the EP department the highest power I have is a Sterling 6mm and I chose that based on trial and error with my Vixen 102 refractor. I now know the scope can take more power, so I'm guessing in the 3.5 to 4mm range. I'd rather not use a barlow to get there because with my barlow the image comes out dimmer. At that power I need all the brightness I can muster.

I'm looking forward to directing the scope at the Trapezium in Orion. Thats because I was able to split two of the double stars with my Vixen on a good seeing night, but they were barely discernible, I mean barely. Not bad for a 102 achromat I must say. I think Warren mentioned in his review he saw all of the stars in the Trapezium. Splitting stars has been a fun activity since I picked up the book "Turn Left At Orion" If you can't bring in deep sky objects go after double stars, loads of challenges there. The book cites a multitude of examples and I also like the fact the authors provide sketches of the target area. Unlike photos, these are realistic and proportionate renderings you can relate to.

Uh Oh, I'm venturing into the bla bla bla territory. I'll report up once the goods arrive.


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stevew
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Reged: 03/03/06

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Joe Ogiba]
      #5141258 - 03/25/12 09:50 PM

Quote:

Quote:

Joe, thanks for the links.
I'd like to get one of these scopes, but I already own a beautiful Antares 152 F-6.5, so I'm having a hard time justifying it.
Still, you never know.......



Steve, I have the Celestron CR150 F8 with the stock 2" R&P focuser so it was not that big a decision on my part to get the CT152 F5.9 since there is a 300mm difference in FL and the 3" CT152 focuser is light years better. I was going to upgrade the focuser on my CR150 but I think I will keep it stock since I now have the CT152 and don't plan on using the CR150 as much now.

Joe





Joe, How does the CT152 compare to your CR150?
More color? Less color? Which one has the better planetary images?

Steve


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davidpitre
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5146040 - 03/28/12 08:03 PM

So I asked CT about the strange screw arrangement on the focuser, Here was the response.

"I took the finder assembly off a telescope and could see that the first set of screws (Set Screws) where not doing anything while the other set I could not see what there purpose actually was. I would say that they were there so that you could mount the finder on either side of the telescope. To be honest, I can't really see why there would be a set screw and a regular head screw."
Perhaps there is some reason to it, but no one in the Western world seems to know.


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Joe Ogiba
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: stevew]
      #5150767 - 03/31/12 08:21 PM

Quote:

Quote:

Quote:

Joe, thanks for the links.
I'd like to get one of these scopes, but I already own a beautiful Antares 152 F-6.5, so I'm having a hard time justifying it.
Still, you never know.......



Steve, I have the Celestron CR150 F8 with the stock 2" R&P focuser so it was not that big a decision on my part to get the CT152 F5.9 since there is a 300mm difference in FL and the 3" CT152 focuser is light years better. I was going to upgrade the focuser on my CR150 but I think I will keep it stock since I now have the CT152 and don't plan on using the CR150 as much now.

Joe





Joe, How does the CT152 compare to your CR150?
More color? Less color? Which one has the better planetary images?

Steve




Hi Steve,

From the limited time I spent viewing through my CT152 it looks to have less color than my 120ST F5 but more than my CR150 F8 like others have found it to be. I plan on doing more comparisons in the coming week.

I am not stuck in a position of depending on one scope for all astro targets since I could use my ED refractors , SCTs , Dob or Mak for planetary and the CT152 or 120ST for wide field work.

The CT152 build quality is the best I have seen on a large achromatic refractor OTA under $1k and I love that 3" focuser.

Joe


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AllanF
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Reged: 11/23/11

Loc: Green Bay, WI USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: seeindoubles]
      #5222429 - 05/14/12 05:58 PM

Warren,
One more question - have you (or anyone) found a good carrying case for the CT152 / AT152? I checked with JMI/Jim's Mobile and Canadian Telescopes and neither has a case that they feel really fits the CT-152.

Thanks again for your great advice.

Al


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #5222600 - 05/14/12 07:47 PM

Hi Al:
I've been trying to solve the problem of finding a case for the CT152 myself. Even though I haven't bought one yet I think I have found the answer. Stellarvue.com shows a soft case, item #C130S, for $199. The size of the case looks just right for a CT152. (outside measurement = 33" x 11" x 10" -- inside measurement = 30" x 8" x 7.5") The picture shows two foam partitions in the case, but I believe they can be either removed or moved. To see the case go to their web site, click on accessories and then select cases from the drop down menu. I bought a stellarvue soft case for my 4" C102 about two years ago. That case was very good quality and has worked out well for me. In my searches this is the only case I can find that seems right for a CT152. I hope this helps you out.

Warren


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AllanF
journeyman


Reged: 11/23/11

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5248247 - 05/31/12 12:08 AM Attachment (91 downloads)

Warren,

Thank you for another great tip - the CT152 fits perfectly in the Stellarvue Soft Case #130S if you remove the partitions - an easy matter since they are attached by Velcro. I had to take the compression ring off the end of the Crayford Focuser and wrapped a plastic bag around that end which will work fine for now but will try to find a threaded cap as a permanent solution to keep dust out of the optical tube. Attached is a photo showing the optical tube in the Stellarvue soft case. The case appears quite well constructed, well padded and sturdy enough to protect the scope from reasonably gentle and expected bumps and so forth when moving the scope in and out of your car and home, etc.

Thanks again!

Al


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WarrenM
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Reged: 07/27/11

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #5249945 - 06/01/12 02:46 AM

Al:
Thanks for the info and the photo of the CT152 in the Stellarvue case. I'm still using the original shipping box to transport the scope to observing sites. Your photo has convinced me I've got to get this case. Thanks again for your post.

Warren


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John Miele
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5284029 - 06/22/12 03:10 PM

Well, after a lot of thought and reading this thread and similar threads on the refractor forum , I ordered my CT152 form Woodland Hills last week. Still anxiously awaiting the new baby's arrival. I actually owned an AR127 for a while and I loved it! I sold it to concentrate on imaging, but immediately missed the views and really wanted to have a big achro back for visual deep sky. So I upped the ante a bit to the CT152! This will be my dark sky star party scope. It's time I get back to observing the sky instead of staring at my laptop as CCD images are downloaded.

John


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WarrenM
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Reged: 07/27/11

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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: John Miele]
      #5284695 - 06/23/12 12:49 AM

John:
I just read your post on purchasing a CT152. I've had mine for a little over one year now. I can tell you that after four decades in this hobby and many telescope purchases, the CT152 is by far the the best telescope value for the money I have ever come across. Even though I love my Meade 10" SCT, the CT152 has become my main dark sky star party scope. The razor sharp views and tiny pin point star images will blow you away! The wide field views with a 35mm or 40mm ultra wide eyepiece are stunning! But don't let me spoil your anticipation, because your about to find this out for yourself. Congrats on your purchase.

Warren


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John Miele
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5298504 - 07/01/12 08:46 PM

HELP!!! HELP!!! ---- I need help bigtime from the CT152 owners in this thread. I received my scope last week and noticed a very unusual star test. Outside of focus, the rings are round and centered (which is good). There is a blue central spot in the pattern but there is also a bright red spot that shows up. The blue dot is in the center, the red dot is offset about half way to the outer ring and moves more outward as you go more out of focus. When I go back to focus, the dots and rings all seem to converge to a well focused star. This is bizarre to me. Yet the star images seem to be pretty good. I want to ask a big favor, can any other owners perform a star test at medium to high power on a sort of bright star, slowly rack outside of focus and tell me if you also see this red dot appear? I have to know if this is just something unique to the lens design, or do I have some type of problem with my lens cell. Please let me know what you find out. Thanks so much in advance ...Best Regards...John

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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: John Miele]
      #5298645 - 07/01/12 10:29 PM

John:
I read your post above with interest. I have not noticed the red spot your seeing in star tests on my scope. Though, I have to admit, I have never done a star test with a high power eyepiece. When viewing stars or star clusters I'm normally using 64x or lower. The images inside and outside of focus look perfect to me at these powers and there is no sign of a red spot like your seeing. Tonight I'm going to set up my scope and do star tests using medium to high power eyepieces to see if I can duplicate what your seeing. I'll let you know what I find out tomorrow.

Warren


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John Miele
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5298683 - 07/01/12 10:53 PM

Thanks Warren. You might need to use 200X to see it. I was using 225X. I missed it myself the first time I did a star test. But when I read about the other owner seeing it, I repeated my test and sure enough it was there. It take steady air and high power but it was there. If you see it it's only on one side of the focus...John

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WarrenM
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: John Miele]
      #5299318 - 07/02/12 03:45 PM

John:
Last night I set up my CT152 and did star tests for about two hours along with my 23 year old son (he's into amateur astronomy also). I used 3 stars for the tests. Polaris, Alkaid (in the Big Dipper's handle) and the bright star Arcturus. I used 3 eyepieces and a 1.6 power barlow to do the testing. They gave powers of 164, 191, 257, and 306. In all cases the out of focus star images showed a blue dot in the center surrounded by feint concentric rings. This was both inside and outside of focus. The images look textbook perfect to me. My son and I looked carefully for any sign of a red spot, but we never saw one. I'm wondering, did you see the red spot in more than one eyepiece? If not, you may be seeing a strange enternal reflection caused by the eyepiece/telescope combination. If more than one eyepiece shows the red spot then I think you have to assume that at least one of the two doublet primary lenses is out of collimation. Sense the crown (the front lense) and the flint (the rear lense) are separately adjustable on this scope the process for collimating them is somewhat of a mystery to me. My scope did not come with an owners manual. I'm assuming you didn't get one either. If you decide you need to collimate the scope, I think you would have to use the adjusting screws to move the red spot to the center of the star test image without moving the blue spot. Unless someone out there who knows how to do it sends us a post you would have to use trial and error. Wow, that sounds scary just saying it! I wish I could be of more help. If you have any other questions let me know.

Warren


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John Miele
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5299379 - 07/02/12 04:14 PM

Thank you very much Warren . I'll check using some different EP's as you suggested but it sounds like there is most likely an alignment issue. What is amazing is that the star images still look good. I was able to split a 1 arc-sec double with the scope. I can't wait to see how even more amazing this scope will perform after I get the collimation really dialed in!...John

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Refractor6
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: John Miele]
      #5299456 - 07/02/12 04:56 PM

Quote:

Thank you very much Warren . I'll check using some different EP's as you suggested but it sounds like there is most likely an alignment issue. What is amazing is that the star images still look good. I was able to split a 1 arc-sec double with the scope. I can't wait to see how even more amazing this scope will perform after I get the collimation really dialed in!...John




Did you check the focuser alignment yet John? A sight tube is best over a cheshire collimation tool for that one from my experience to see if the focusers alignment is a bit off. If the outer cell tube or perhaps a baffle seen around the optics aren't perfectly centered {the amount of black stuff you can see around the circular glass seen through the small hole of the pinhole sight tube} then your focuser is off for sure. The cheshire is good at showing you what's going on with the alignment of the optics at the other end.

Good to have both to check out the whole optical train. Start with the site tube in the back....


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mdowns
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Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: seeindoubles]
      #5316464 - 07/13/12 07:05 PM

I just found this thread and so I can only hope others continue with it. I recently bought an antares 1529 on cnights and was wondering if others have had similar results with thiers(Ant,Es,CTs). I found the 3 element barlows I had (meade,smart astronomy) were not very effective. However when I used an older 2x 2element long focal lenght barlow (parks made in japan)the improvement was dramatic (for planetary ca reduction). Has any one else had a sinilar experience? These scopes are of course wonderfull rfts, with the addition of the 2x barlow mine delivers really nice palnetary images moderately close to my c8. Anyone else?

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WarrenM
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Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: mdowns]
      #5316881 - 07/14/12 12:52 AM

mdowns:
I go into some detail on how I deal with CA when using my CT152 in my answer to Steve (above) dated 2/11/2012. If you haven't read it just scroll up to it. As far as barlows go, the only one I have been using with my scope is a short 2" 1.6 power Antares barlow. I have noticed it cuts down the CA some but not a lot. Your success with a 2 element 2 power barlow makes me want to try it. I have such a barlow that I haven't used in a while, so I'm going to give it a try and see what happens.

Warren


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AllanF
journeyman


Reged: 11/23/11

Loc: Green Bay, WI USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: seeindoubles]
      #5477756 - 10/18/12 09:18 PM

In case anyone missed it there are two excellent reviews of this telescope in the current issue of Astronomy Technology Today (Vol 6, Issue 5 - Sept-Oct 2012). You must subscribe to read it on-line and from poking around their website i think you may want to just buy the print version rather than subscribing on line and same applies to iPhone version - buy print version.

Al


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WarrenM
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Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: AllanF]
      #5479258 - 10/19/12 06:23 PM

Allan:
Thanks for posting the info on that magazine article. I'm going to see if I can buy it at Barnes & Noble.

Warren


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Peteman
newbie


Reged: 10/20/12

Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: WarrenM]
      #5484179 - 10/22/12 07:09 PM

Hello everyone this is my first post on CN. Great thread and thanks to Warren for the great review. Your reveiw is one of the reasons why I bought this scope - maybe Canadian Telescopes should consider paying you some commission!

I know this scope will not be the best for imaging but I gotta try. Does any one know what adapters to buy that will thread directly into the 3" focuser onto a DSLR t-ring. Are these a standard size thread/diameter?

Thanks!


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WarrenM
member


Reged: 07/27/11

Loc: Clovis, Calif., USA
Re: Canadian Telescopes 152 F-5.9 Acromatic Refractor new [Re: Peteman]
      #5484690 - 10/23/12 01:29 AM

Hello Pete:
I'm glad you found my review useful in helping you make a decision on your telescope purchase. I wish I could help you with your camera adapter question. I stopped doing photogrophy years ago when we were still using film. You might try calling the customer service department at Canadian Telescopes. They should be able to tell you which adapters to buy. Good luck with your new scope!

Warren


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