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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Astro-Tech 12" truss tube RC production starting
      #6137143 - 10/14/13 02:15 PM Attachment (529 downloads)

Attached is an image of the Astro-Tech 12" truss tube Ritchey-Chrétien. Production is due to start this month, with shipments from our stock expected to start before the end of the year. Anticipated price is expected to be about $4495. An AT12RCT product page will be available shortly to allow pre-orders.

The first production model 16" Astro-Tech truss tube RC is expected to be completed around the end of this month, with full production expected to start next month. Availability expected to be by the end of the year or shortly thereafter.


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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: Astro-Tech 12" truss tube RC new [Re: frebie]
      #6137146 - 10/14/13 02:16 PM Attachment (465 downloads)

Here's the rear cell of the Astro-Tech 12" truss tube RC.

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skyward_eyes
Vendor - Sky-Watcher USA
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Reged: 12/12/06

Loc: California
Re: Astro-Tech 12" truss tube RC new [Re: frebie]
      #6137218 - 10/14/13 02:48 PM

Thats awesome!

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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: Astro-Tech 12" truss tube RC new [Re: skyward_eyes]
      #6137553 - 10/14/13 05:46 PM Attachment (324 downloads)

Here's the front cell of the 12" Astro-Tech carbon fiber truss tube RC.

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zjc26138
Loved By All
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Reged: 02/24/05

Loc: Mingo Junction, Ohio
Re: Astro-Tech 12" truss tube RC new [Re: frebie]
      #6137770 - 10/14/13 08:10 PM

I want one! Looks like I'm going to need a bigger mount.

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gavinm
Carpal Tunnel


Reged: 08/26/05

Loc: Auckland New Zealand
Re: Astro-Tech 12" truss tube RC new [Re: zjc26138]
      #6137822 - 10/14/13 08:44 PM

How does that compare price-wise and weight-wise to the normal aluminium tube 12" OTA? Will that still be available?

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AstronomicsAdministrator
Vendor if you must, AKA The Mighty Kong.
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Reged: 06/07/04

Loc: Right Here
Re: Astro-Tech 12" truss tube RC new [Re: gavinm]
      #6138060 - 10/14/13 11:13 PM

Current model is $3995. No clue on the weight yet.

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Sunspot
Postmaster
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Reged: 03/15/05

Loc: Surprise, AZ
Re: Astro-Tech 12" truss tube RC production starting new [Re: frebie]
      #6138833 - 10/15/13 11:25 AM

That really looks sweet! Sure wish someone would offer a high quality planetary DK or Classical Cass in that price range. (Just thinking out loud)

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Jason B
Proud father of 5!!
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Reged: 06/21/04

Loc: Mid-Michigan
Re: Astro-Tech 12" truss tube RC production starting new [Re: Sunspot]
      #6138883 - 10/15/13 11:57 AM

Is there going to be a 10"?

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MikeBOKC
Post Laureate
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Reged: 05/10/10

Loc: Oklahoma City, OK
Re: Astro-Tech 12" truss tube RC production starting new [Re: Jason B]
      #6140473 - 10/16/13 09:14 AM

Any mount recommendations? And how would these scopes perform visually? Looks like an ideal big aperture acquisition for permanent setup in a club observatory . . .

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AstronomicsAdministrator
Vendor if you must, AKA The Mighty Kong.
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Reged: 06/07/04

Loc: Right Here
Re: Astro-Tech 12" truss tube RC production starting new [Re: MikeBOKC]
      #6140834 - 10/16/13 12:42 PM

Sunspot - The DK been talked about as it would be super simple since the mirror production is already there, but the demand is very limited so I don't think I would put that into production.

JasonB - I have asked for an 8" and a 10".

MikeBOKC - Not sure on the mount yet. I would suspect a G11 class would work well, but you know how you nutty astro-photographers can get. lol


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MikeBOKC
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Reged: 05/10/10

Loc: Oklahoma City, OK
Re: Astro-Tech 12" truss tube RC production starting new [Re: Astronomics]
      #6141016 - 10/16/13 02:15 PM

Hey I am not so nutty as to get into AP!

How would these scopes perform for visual use?


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AstronomicsAdministrator
Vendor if you must, AKA The Mighty Kong.
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Reged: 06/07/04

Loc: Right Here
Re: Astro-Tech 12" truss tube RC production starting new [Re: MikeBOKC]
      #6141036 - 10/16/13 02:28 PM

It comes down to a personal opinion after viewing it. Technically it should be "OK" visually, however due to the large secondary obstruction you would assume contrast would take a hit. However, there have been plenty of people on CN that have used our RCs visually and have been amazed by the results. I know this is a vague answer, but it is the best I have from the user base.

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Mary B
Vendor - Echo Astronomy and Electronics
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Reged: 05/21/10

Loc: Minnesota
Re: Astro-Tech 12" truss tube RC production starting new [Re: Astronomics]
      #6143225 - 10/17/13 03:53 PM

I have used my 6 inch RC visually on Jupiter with good results, contrast was okay compared to my Z10 dob. Image was sharper in the RC, but I think I have a mirror issue in the dob.

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Jussi Koponen
newbie


Reged: 10/26/13

Re: Astro-Tech 12" truss tube RC production starting new [Re: Mary B]
      #6160225 - 10/27/13 05:09 AM

Hi

I just bought GSO 12" Carbon RC and found that attaching the focuser directly to main mirror is a design flaw. that kind of design makes too much stress for main mirror, perhaps not for DSLR but a CCD and a filterwheel is too much.

Im not sure, but does this one has same design?


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_k8jb_
newbie
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Reged: 05/12/08

Loc: Oh
Re: Astro-Tech 12" truss tube RC production starting new [Re: frebie]
      #6177859 - 11/05/13 05:16 PM

Couple of questions. How long are the dove-tails, they look a lot shorter than on my AT10RCF. I'm guessing maybe 15" max? Does that give enough length for balancing weights when you swap a heavy camera for a light one or do you have to move the OTA itself on the mount?

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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: Astro-Tech 12" truss tube RC production starting new [Re: _k8jb_]
      #6178945 - 11/06/13 10:32 AM

They are 14" long. As for balancing, that depends on the length of the dovetail slot on the mount (16" on a Paramount MX, for example, versus 8" on a CGE Pro) and how much leeway that gives you for adding weights versus moving the OTA, as well as how much of a weight change you are contemplating.

P.S. New images and specs are up here: https://www.astronomics.com/12-f8-truss-tube-ritchey-chrtien-optical-tube_p20...


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mclewis1
Thread Killer
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Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Astro-Tech 12" truss tube RC production starting new [Re: frebie]
      #6179183 - 11/06/13 12:43 PM

The weight is interesting ...

AT12RC steel tube with no focuser - 49.3 lbs
AT12RCT truss tube with 2" focuser - 52 lbs

Clearly weight won't be a reason to choose the truss model.

So assuming I'm reading the specs correctly for the additional $500 it appears you get a very unique looking scope, a 2" crayford focuser, less temperature induced focus change, and perhaps somewhat better cool down characteristics ... anything else?


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AstronomicsAdministrator
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Reged: 06/07/04

Loc: Right Here
Re: Astro-Tech 12" truss tube RC production starting new [Re: mclewis1]
      #6181340 - 11/07/13 03:51 PM

I would say the cooling will be much better then somewhat. The open tube should allow a much more efficient cooling time when combined with the Quartz optics.

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Relativist
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Reged: 10/11/03

Loc: OC, CA, USA
Re: Astro-Tech 12" truss tube RC production starting new [Re: Astronomics]
      #6181826 - 11/07/13 08:49 PM

Interesting question, because I've wondered the same thing about carbon tubed reflectors. When I asked people,that purchased such OTAs they mainly indicate the focus issue as the motivator. Understandable for those imaging for long periods of time I think.

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