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Post a picture of your refractors (part 8)

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1593 replies to this topic

#1576 Nippon

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Posted 15 September 2020 - 03:21 PM

Playing around inside it seems okay. I'll know more when I get first light. 

Sally's close pass and slow pace have prevented my after midnight observing and it looks worse on the weather app for Tampa. What tripod do you have under your AP?


Edited by Nippon, 15 September 2020 - 03:21 PM.

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#1577 eros312

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Posted 15 September 2020 - 03:51 PM

TL130, the one it came standard with. Yeah, Sally has really made it dreary here the last couple days. Hopefully by the weekend it'll all clear out. 



#1578 wrnchhead

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Posted 15 September 2020 - 03:55 PM

TL130, the one it came standard with. Yeah, Sally has really made it dreary here the last couple days. Hopefully by the weekend it'll all clear out. 

Looks like you guys might have 5 other storms brewing over the Atlantic!



#1579 Nippon

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Posted 15 September 2020 - 04:02 PM

Looks like you guys might have 5 other storms brewing over the Atlantic!

All the ones in the Atlantic right now are forecast to stay away. But yeah really active season they are running out of names!



#1580 BFaucett

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Posted 15 September 2020 - 04:28 PM

trot-all-2.jpg

 

med_gallery_230527_10560_746165.jpg

 

LEFT: Astro-Tech AT72EDII (f/6)  |  RIGHT: Celestron Omni XLT AZ 102 (f/6.5 achromat)

 

 

Cheers! Bob F. smile.gif

 


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#1581 desertlens

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Posted 15 September 2020 - 05:04 PM

I do a lot of my observing with three inch instruments. This one has never disappointed.

 

SV80ST0.jpg

SV80ST (ƒ6)


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#1582 Jethro7

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Posted 15 September 2020 - 05:32 PM

Helo CN'rs

My newest Refractor,  Altair Starwave 102 ED F/1122. Paired with my trusty AT102ED. This was first light with the new scope. Unfortunately it was a awful night to view do to Hurricane Sally, but this was the only moment I had for the near future when the clouds parted for a bit. Has anybody noticed that when you get a new Astro Toy, your weather goes from perfect to  crummy immediately?

 

HAPPY SKIES TO YOU AND KEEP LOOKING UP Jethro

 

20200913 005959

Edited by Jethro7, 15 September 2020 - 06:07 PM.

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#1583 RJF-Astro

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Posted 16 September 2020 - 09:21 AM

Ok, so I am back in this thread with a refractor, after having used mostly reflectors for over 1,5 years. A bad descision on a fast imaging newt was the biggest cause. After hassling with this 6" f/4 newton and not getting any sharp stars, my new TS Imaging Star 102 f/5.1 is a relief. It was plug and play, seeing nothing but great subs in the morning after a night of clear skies.

 

Well not exactly plug and play. It turned out my ZWO off-axis guider did not fit the M48 screwed connection. The threads were too far out and hit the prism stalk. So I was looking for another OAG or guidescope. Then I saw this great carrying handle / dovetail by William Optics. Combined with the slide in guidescope it makes for a great addition. Guiding is very solid and the scope is a lot easier to handle.

 

102 triplet.jpg


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#1584 coopman

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Posted 16 September 2020 - 06:59 PM

That is an f/5.1?  Looks too long for that.


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#1585 Nippon

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Posted 16 September 2020 - 07:31 PM

That is an f/5.1?  Looks too long for that.

Agree. Looks like native f/7. Maybe with a reducer???



#1586 smkoush

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Posted 16 September 2020 - 07:53 PM

FOA-60Q, FC-76DCU & FC-100DZ

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  • IMG_2613 3.jpeg

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#1587 Reality Studio LLC

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Posted 17 September 2020 - 12:18 AM

My little setup with a Skywatcher 80ED. The whole setup plugs into an old Intel Nuc pc that sits below, then from inside the house I remote desktop into it from any pc in the house and image using Nina. Still learning but pretty happy with this setup and very happy with the 80ED, although I do wish it was a bit faster.

Attached Thumbnails

  • telescope.jpg

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#1588 RJF-Astro

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Posted 17 September 2020 - 01:16 AM

Agree. Looks like native f/7. Maybe with a reducer???

Yes you are correct, it has a built in reducer/corrector. I don't know the ratio of the triplet but f/7 seems logical.



#1589 cmas

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Posted 19 September 2020 - 01:41 PM

Well, as I sadly have no time for any imaging, I finally ended up selling my 8" edge, camera, mount and mixed bits and pieces like filters. As I did not want to stop this hobby, I was thinking of getting binoculars in the 70-80 mm size. However, after a while I decided to keep my small apo for the quark and avoid issues of optical quality of binos within my budget. And as stuff was getting sold quite nicely, I thought of getting binoviewers etc but with the idea that no additional money should be spent at the moment and the whole setup needs to be light and easily moved in and out. So off goes the focus motor etc, on goes online ordering (due to covid it took 2 orders from Germany and three from the UK (one had to be cancelled)) and... my new visual grab & go setup looks like this at the moment:

 

- TS 80 / 480 mm FPL53 triplet APO

- Baader T-2 / 2" nose piece

- Baader T-2 prism diagonal (Baader #2456095)

- Baader 1.7x Glass patch corrector

- Baader Maxbright II binoviewer (Baader #2456460B)

- Baader Hyperion zoom mark IV (Baader #2454826)

- TSAZGP mount slightly modified (as per CloudyNights forum suggestions to make it a bit more rigid). The arm is still at 90 deg angle as first light still waits while writing this.

- I'll use phone attached to the scope and Stellarium pro to get rough idea about targets and orientation. It's not accurate in any way but suits my needs at the moment.

 

I also have a field flattener which could be used (needs to be tested) and Baader VIP Barlow (needs to be tested also) to add before the diagonal. Focus can be reached with all these options as per daytime testing. The focus in my use consists of the moon, planets etc. as I live in the capital area of Finland.

 

I also have a water tight, padded case which takes all the bits and pieces and protects the optics from the curious hands of the offspring laugh.gif And there's still room for the quark in the case. It would be better to have tube rings but the scope is an older model with no rings supplied with the scope and getting them would have blown my budget. An L-bracket is always an option, but let's see how I'll cope with the focuser orientation. Some additional images can be found here: click click!

 

50356674836_3bba865dec_z.jpg


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#1590 waso29

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Posted 19 September 2020 - 03:11 PM

Attack of the small fracts...

120/130/140 oh my

Attached Thumbnails

  • IMG_9500 rich tec140 dm6 @conway.JPG
  • IMG_9670 peter ap130gtx sxp2 @conway v2.JPG
  • IMG_9676 tsa120n em11t2z @conway.JPG

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#1591 rkelley8493

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Posted 19 September 2020 - 05:48 PM

Going thru some photos and found a few of my refractors.. Here's the FC-100DF mounted on my Atlas AZ/EQ-G. A bit 'over-mounted' lol.gif, but rock solid! 

 

fc.100.atlas.jpg


Edited by rkelley8493, 19 September 2020 - 09:02 PM.

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#1592 rkelley8493

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Posted 19 September 2020 - 05:49 PM

And here's the SVA-130T mounted to the Atlas Pro

 

sva.130.atlas.jpg


Edited by rkelley8493, 19 September 2020 - 09:03 PM.

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#1593 Agatha

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Posted 19 September 2020 - 06:02 PM

rkelley8494,

 

Your telescopes are beautiful.  But I have a problem with your choice of ground cloth.

 

I don't display an American flag but I respect it and am very aware of standard protocol. 

 

It does not matter if it is in the form of a towel or other fabric.  To use the flag image (your towel) as a ground cloth under your telescope is not appropriate and some may consider it disrepectful.  

 

ps: when I was a young girl in the Girl Scouts, we practiced flag  etiquette which included to never let the flag touch the ground.   


Edited by Agatha, 19 September 2020 - 06:13 PM.

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#1594 long scopes f6-f19

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Posted 19 September 2020 - 06:13 PM

Zeiss type A doublet 150mm f/17.8 made in 1919-20, with tube by APM.  The lens was sent to Zeiss by Markus Ludes and one element was multicoated to protect it from degradation.   Strehl was measured at 0.97 by Zeiss, but I am unsure of the details.  The scope gives beautiful views.  I will post more about A lenses in the classics forum in a few months and hopefully we will be able to get decent seeing to compare it to other scopes before planets are gone.

 

(In)famous CN member pictured for comparison grin.gif  The scope is lightweight for such a big tube (maybe 35-40 pounds) but causes vibrations at the eyepiece on an AP 1100 during focusing.  The original tube weighed 187 pounds and had a 1364 pound mount...

 

attachicon.gifZeiss A 150.jpg

Now that's more like it, I was tired of seeing so many small apo telephoto lenses imitating what a real refractor is to me

Interested to know more about its degradation risk before coating, although I would have thought the heating involved in coating would have been a bigger risk, it must have been well annealed glass




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