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Astro-Tech AT65EDQ 65mm f/6.5 ED quadruplet

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#1 Twilight

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Posted 21 April 2011 - 07:01 AM

Does any one own or know of a review on this Astro-Tech AT65EDQ 65mm f/6.5 ED quadruplet as for visual use. I would really love to hear what it is capable of. Would this make a great grab and go with a shot cooldown period?

#2 Jason B

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Posted 21 April 2011 - 07:10 AM

With the AT65 being designed as an astrograph, it doesn't focus with all 2" diagonals. The only one I know of that I have seen reports of it focusing with is the Baader prism.

That being said, I enjoy using mine with a 1.25" diagonal from time to time. It has a great star test and the views are very sharp/contrasty. It is a bit heavier than scopes of similar size. As as astrograph, it is as good as any scope out there in the 65mm range. It spends much more time for me with a camera attached! For visual, I usually like a little more aperture for grab n'go (about 80mm, I have an older Vixen FL80S) but it is pretty sweet to scan the summer milky way with the 65 once in a while...

#3 Twilight

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Posted 21 April 2011 - 07:17 AM

I was wondering if it would work with the Denk II supersystem binos? Jason do you know if that is possible.

#4 LLEEGE

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Posted 21 April 2011 - 08:17 AM

Using an OC may get you enough "in" travel but I wouldn't bank on it.

#5 Jason B

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Posted 21 April 2011 - 09:50 AM

What Luke said...

#6 APM M.Ludes

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Posted 21 April 2011 - 10:03 AM

we have modified that scope for a customer, we took the original focuser off and addet a 2" starlight Feather Touch and voila , the 2" diagonal can be used :-)

#7 jason_milani

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Posted 21 April 2011 - 01:30 PM

I think the only way you're gonna get a binoviewer to focus on this scope is to view straight through without a diagonal. Not very comfortable. I put a Moonlight SCT focuser on mine (1.5" of travel) and also purchased their 1.6" extension for back focus requirements when doing imaging. As Jason said, their are better options for a grab and go visual scope. The AT65Q is a good bit heavier than most 80mm doublets out there.

#8 Twilight

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Posted 21 April 2011 - 05:43 PM

Thanks guys, I will drop that idea then. I am wondering about this new one comming out also the AT60EDT I believe it is. I am going to purchase a larger refractor but would like to have a small one also just for quick grab and go. Something I might cary around in my truck.

#9 LLEEGE

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Posted 21 April 2011 - 08:26 PM

The 60 would be a better choice.

#10 Phil Cowell

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Posted 21 April 2011 - 08:50 PM

I have 2 of the 65Q's and the AT 60 Triplet. Guess I better add one of each to bring to the refractor get together.

#11 Twilight

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Posted 21 April 2011 - 11:16 PM

Phil you really don't need that 60 with 2 65's. Can I give you my address to ship it?

#12 Phil Cowell

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Posted 22 April 2011 - 05:19 AM

Phil you really don't need that 60 with 2 65's. Can I give you my address to ship it?


Oh I need them. One rides on an AT111EDT, one on an AT130 and the AT60EDT on my new TEC140. The Baader T2 diagonals make the AT65's great 2" wide field scopes (I'm not an imager just visual).

#13 Mark Rosengarten

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Posted 24 April 2011 - 05:53 AM

I use my AT65EDQ visually with an APM 1.25" Herschel wedge, it is a dedicted white-light solar scope. For that purpose it's utterly amazing. It rides on one side of my dual mount, the other side is home to a Lunt 60 double-stack H-a scope. I don't get out much at night. :)

#14 Twilight

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Posted 24 April 2011 - 08:47 PM

I have been wanting a lunt scope but to expensive right now for what I want. But using the AT65EDQ is a good Idea for solar viewing. But I want more than white light viewing.

#15 Wil2010

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Posted 24 April 2011 - 10:05 PM

Greetings.

Would the AT65 Quad make a good wide field imaging scope , or a nice guide scope??

#16 Wil2010

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Posted 24 April 2011 - 10:06 PM

Duplicate post removed

#17 jason_milani

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Posted 24 April 2011 - 11:01 PM

Yes, it's a dedicated wide field imaging scope. It can also be used to autoguide. I used it for that purpose.

#18 Jason B

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Posted 25 April 2011 - 06:55 AM

It is a great wide field imaging scope. I use it with a DSLR and have really enjoyed it. It works well as a guider too but is heavier than similar sized scopes so if your mount is near it's limit with the main OTA, the extra weight of the AT65EDQ may or may not cause problems for the mount.

#19 zytrahus

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Posted 06 June 2011 - 10:56 PM

I am expecting mine to be there soon and was wondering if I should get any smaller counter weight for my imaging setup which is composed on of the AT65EDQ, ST80/SSAG, T2i. I only have the 23lbs counterweight that came with my G11 currently.

could anyone tell how much weight they use for their similar setup?

thank you :)
Stephen

#20 fryday2107

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Posted 07 June 2011 - 06:57 PM

I have the AT65EDQ with a Meade ETX90 and Canon XSi for imaging and I only use one 5lb counter weight. I think a 23lb would be too much.

#21 bkatx

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Posted 09 June 2011 - 04:41 AM

Greetings.

Would the AT65 Quad make a good wide field imaging scope , or a nice guide scope??


I just bought this scope for this very use (wide field imaging). I will post my fist light images later this evening. So far it seems to be very good. The built in flattener works very well. Overall I'm very happy with it. However my copy came with a large dust particle between the glass. I don't think it will affect the scope's performance but it was still disheartening.

I'm expecting good things from it. FPL-53 glass, built in flattener and comes with rings and dovetail plate. So far so good.

#22 zytrahus

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Posted 09 June 2011 - 12:47 PM

Congrats on the new scope. Looking forward to seeing your first light picture!
Regards,
Stephen






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