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New to me Orion 180mm maksutov

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#1 rg55

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Posted 14 January 2013 - 10:52 PM

Received today. First light will probably be in a couple of nights. So far it appears in great shape and is compatible with most of my C8 accessories, so it will fit nicely into the family.

Please forgive the poor photo. I have the illuminated Orion RACI finder installed, along with a flip mirror and the Neximage 5 and dewstrip. Now I just need some thermal britches! :coldday:

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#2 Jaimo!

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Posted 15 January 2013 - 07:08 AM

Happy New Scope Day!

:yay: :yay: :yay:

Jaimo!

#3 dogeddie

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Posted 15 January 2013 - 10:30 AM

Congratulations! Enjoy your new rig!

#4 coopman

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Posted 15 January 2013 - 11:16 AM

That should be a killer scope if it ever reaches thermal equilibrium. Congrats.

#5 Eddgie

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Posted 15 January 2013 - 03:04 PM

Hi Richard,
Just a tip... Your dew strip will be more effective if it is placed just behind the corrector cell at the top edge, but fully on, the optical tube.

If you put the dew strip on the cell, a lot of the heat will simply radiate off from the edge of the cell's extension.

By putting the strip on the tube, a very slight amount of warm air is trapped inside the tube and of course it wants to go up to the corrector, which heats if from behind.

Used on the edge like you are doing now will cause the Meniscus to fog at the center because all of the heat is being trapped at the outside edge.

For SCTs and MCTs, the strip should be placed on the tube itself right below the joint between the OTA and the corrector cell...

#6 Ed Holland

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Posted 15 January 2013 - 04:36 PM

Lovely! I'm looking forward to reading your first impressions with this 'scope :)

#7 rg55

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Posted 15 January 2013 - 09:12 PM

Thanks, Jaimo, dogeddie and coopman! This is only the fifth telescope I have owned, and I am glad I can enjoy it.

#8 rg55

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Posted 15 January 2013 - 09:14 PM

Thank you for the tip, Eddgie...don't want that lovely corrector to frost over!

Ed, I'll put up some images as soon as our winter gunk clears out. Thanks for the encouragement!

#9 Asbytec

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Posted 16 January 2013 - 02:54 AM

Richard, congrats on the 180 MCT. I have the 150 version and have just been floored by it and enamored with the design. I think you'll find its a fine scope.

If your temps are pretty cool, let it set for an hour prior to observing someplace safe where it's exposed to the chilly temps. That will help greatly.

MCTs have a bad rep for cooling problems, but I suspect that came from some of the "heavier" models that had more mass to cool down. The Orion is a light weight by comparison and really not too much different than an SCT in terms of mass and construction. Cooling /might/ be a problem, but some prep can minimize it.

#10 watcher

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Posted 16 January 2013 - 03:02 AM

Congrats on your new scope. I have an IM 715 that I enjoy immensely. I like the bells and whistles that the IM comes with, but from what I hear, the optics are pretty close. You are going to enjoy that scope! Just make sure you allow it to acclimate.

#11 BigC

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Posted 16 January 2013 - 01:26 PM

Ooooh!Kucky you.

I am very impressed with my 127 Mak-can only imagine what a 180 Mak would do,but it should be VERY good.

We await moderate weather and better pictures.

#12 Mert

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Posted 16 January 2013 - 07:01 PM

You're gona love that scope Richard, brilliant
piece of Maksutov!!
Optics are said to be very smooth, mine ( 150mm ) is
a nice sample as well, I won't sell never I think!
Here a sample image with the 150mm, you are going to
blast this away for sure!!
Hope to see some images taken with your scope soon!

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#13 azure1961p

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Posted 16 January 2013 - 09:40 PM

Wow - very nice 150mm image!!!

Pete

#14 rg55

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Posted 16 January 2013 - 11:31 PM

Thanks, Joe, Norme & BC. Looks like clear skies coming up tomorrow night, can't wait!

Mert, that image blows away anything I have from my C8. Hope I have a similar specimen. Thanks for sharing!

#15 Traveler

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Posted 17 January 2013 - 06:10 AM

That is a very good Jupiter :bow: Where did you make it? I guess high in a mountain area.

#16 Mert

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Posted 17 January 2013 - 07:56 AM

Hi Traveler,

I did make it from my balcony for sure, no joke!
That with some chimneys smoking etc.
However the seeing was great and I wasn't even there,
I used Firecapture to capture and Autoguide at the
same time for 3 hours, 60 avi's.
The image was one of the best!

Here is an animation of those 3 hours: 3 hour animation 150mm Mak

I'm sure Richard won't have any problems to improve this!!

Edit: it's a bit dark I see, have to adjust my laptop
screen when processing :o

#17 Illinois

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Posted 17 January 2013 - 08:24 AM

Thats great! I love my Orion 180mm Mak-Cass! Juipter, Saturn and Moon look so great! Not need high power! Between 100 and 250 power is great to look at planets and Moon!

#18 orion61

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Posted 17 January 2013 - 08:54 AM

I love my Meade 7", I leave mine in my unheated garage,
comes to temp much quicker that way.

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#19 rg55

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Posted 17 January 2013 - 11:14 AM

Illinois, how would you compare it to your C8?

#20 orion61

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Posted 17 January 2013 - 12:04 PM

Illinois, how would you compare it to your C8?

Illinois may answer as well, but Myself being the owner of over 30 C8's since the 70's, can give you a pretty good idea.
If you have an excellent C8, it will be a little brighter, very sharp and showing close to the same images on Doubles, thats where things end. Myself I am mostly a Lunar Planetary and Double Star observer. Included in the mix are Globular Clusters, and Planetary Nebula.
This is where the Mak really shines. I have had 2 180mm Maks
Both Meade, one LX50 and one LX200 (currently owned)
The Mak shows more contrast, the background sky is darker
Black (if that makes sense)
Double stars show a cleaner separation, the Airy disks are more defined and remind me more of an Apocromatic Refractor.
Even the best SCT have shown some small degree of light scatter around the Star. This has varied vastly between the different scopes, from very obvious to just a bit. Surprisingly the stock Schmidt I have now that gives the 7" a run is an old Dynamax DX6 SCT. I have an old Orange tube C8 rumored to have been owned by Leo Henzl and there are notes hand written in blue marker on the back of the Primary
supports this, is states it was returned for further refinement of the optical figure and is the best SCT I have ever looked through. If it is indeed a legit "Henzl" it's not fair because he used it for public viewing showing Celestrons excellent optics..
But back to the shootout. With the Mak 180
Lunar Details for no better way to say it POP out better.
Faint swirls on Jupiter stand out more as does the color of the GRS. Globulars show up better defined even if not quite as bright. so do Planetary Nebulae. Remember these differences are not world changing if you have at least a B+
rated SCT, (my own rating system useing final image as the gauge) Most 8" SCT's rate about C to C+, the encouraging news the new Chinese optics push that number closer to the B ratings on a consistant basis. (again these are the ones I have had my eyes on, So did the Late 80's Ultima series and a lot of the Celestar tubes I have looked through, I think Unk Rod will confirm my findings, along with the Classic Orange tubes built before 1980.
This really stood out on Saturn over the last year or so
with the Great White Storms through the Mak!
The C8 stands up for itself on Galaxys tho out performing the 7". Also a GOOD Celestron 9.25 SCT will outperform the 180 due to greater size,
All around I'd give the nod to the C8 if you have an excellent one, unfortunately the majority are just optically "Good".
So depending what your viewing preferences are, you choose.
I will say City locked observers will benefit from the Mak.
(My opinion) The various Maks I have owned By Orion Meade and Celestron (the 127 is a very sweet tube) have all been VG+ to EX on my rating scale.
Good luck with your new Mak you are going to love it, just make sure to let it cool for an hour :grin:.. Not Kidding...
If you are reading this and have never had a 180mm Mak
you don't know what you have been missing, Unless you are laughing at me looking through your 6" + APO!!!
Orion

#21 rg55

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Posted 17 January 2013 - 01:12 PM

Hey Orion,

I've only owned the one C8, and I think it's great when it's in collimation and equilibrium, but that's been an ongoing battle. It doesn't have enhanced coatings, but I've been able to get more and more out of it.

Yeah, I'm pretty much limited to the city most of the time, so my options are limited. That's why I've gravitated more toward the lunar/planetary imaging, improving my humble skills with the help of this forum and through dogged persistence.

I appreciate your comparison and any other comments/suggestions you might have for using the scope.
:)

#22 orion61

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Posted 17 January 2013 - 02:10 PM

One nice thing is you can use lower power eyepieces than with a C8 to get the same powers!
I don't know if a focal reducer is available for it?
I tried my F6.3 Celestron FF/FR WOW what a wierd visual sensation! kind of backwards coma..
One think I forgot to mention is the flatter field than a std SCT..

#23 spongebob@55

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Posted 21 April 2013 - 09:20 PM

Hi Traveler,

I did make it from my balcony for sure, no joke!
That with some chimneys smoking etc.
However the seeing was great and I wasn't even there,
I used Firecapture to capture and Autoguide at the
same time for 3 hours, 60 avi's.
The image was one of the best!

Here is an animation of those 3 hours: 3 hour animation 150mm Mak

I'm sure Richard won't have any problems to improve this!!

Edit: it's a bit dark I see, have to adjust my laptop
screen when processing :o



Dang, what a great animation. I must have watched it about 4 times through! I'm just about to order a Orion 180mm, but I'm now in the 'due diligence' stage or what other stuff I'll need for it. EPs, diagonal, finder, etc.....
Thanks for the movie!!
Bob

#24 Illinois

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Posted 22 April 2013 - 06:42 AM

You're gona love that scope Richard, brilliant
piece of Maksutov!!
Optics are said to be very smooth, mine ( 150mm ) is
a nice sample as well, I won't sell never I think!
Here a sample image with the 150mm, you are going to
blast this away for sure!!
Hope to see some images taken with your scope soon!


Wow! Thats so good! Sell your 150 mm and buy 180mm!

#25 Illinois

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Posted 22 April 2013 - 06:50 AM

Illinois, how would you compare it to your C8?


Cant remember all details but I remember that C8 is pretty good on deep sky object. And I dont use it often and gave to astronomy club. Few years later, I bought Orion 180mm Mak-Cass because I like 2700mm for high power. 10mm eyepiece would be 270 power is good enogh to look at planets. I rather to use 10mm eyepiece than 3 mm eyepiece.

I have 3 telescopes and I am happy. IF I must have just ONE telescope then it would be C8 or C9.25....maybe C11!






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