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C9.25 not available in Carbon Fiber tube for ASGT goto?



 
 
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  #1  
Old February 21st 04, 01:38 AM
Orion
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Default C9.25 not available in Carbon Fiber tube for ASGT goto?

Say it ain't so...
So far, the only solution I've found is to order the OTA and GT-5 Goto mount
separately.
Why would Celestron make such a choice?
Considering how durable Carbon Fiber is compared to Aluminum tubes, for
~$100 more, it seems nuts not to go with CF.
Any word on this?
Orion



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  #2  
Old February 21st 04, 01:43 AM
Rod Mollise
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Default C9.25 not available in Carbon Fiber tube for ASGT goto?

it seems nuts not to go with CF.
Any word on this?
Orion


Hi:

They've had problems finding a steady supply of carbon fiber tubes, I know
that.

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html
  #3  
Old February 21st 04, 01:43 AM
Rod Mollise
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Default C9.25 not available in Carbon Fiber tube for ASGT goto?

it seems nuts not to go with CF.
Any word on this?
Orion


Hi:

They've had problems finding a steady supply of carbon fiber tubes, I know
that.

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html
  #6  
Old February 21st 04, 02:49 PM
Rod Mollise
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Default C9.25 not available in Carbon Fiber tube for ASGT goto?

Have you heard anything about internal condensation problems with
the carbon fibre tubes? Possibly due to its insulating properties
leaving internal humidity only the optical elements left to condense
on?


HI Chris:

I certainly have not had this problem with my carbon fiber C11, despite using
it in some _really_ humid environments. I also haven't heard anything of this
kind reported on the NS11 Yahoo group...

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html
  #7  
Old February 21st 04, 02:49 PM
Rod Mollise
external usenet poster
 
Posts: n/a
Default C9.25 not available in Carbon Fiber tube for ASGT goto?

Have you heard anything about internal condensation problems with
the carbon fibre tubes? Possibly due to its insulating properties
leaving internal humidity only the optical elements left to condense
on?


HI Chris:

I certainly have not had this problem with my carbon fiber C11, despite using
it in some _really_ humid environments. I also haven't heard anything of this
kind reported on the NS11 Yahoo group...

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html
  #8  
Old February 21st 04, 07:18 PM
David Knisely
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Default C9.25 not available in Carbon Fiber tube for ASGT goto?

Orion wrote:

Say it ain't so...
So far, the only solution I've found is to order the OTA and GT-5 Goto mount
separately.
Why would Celestron make such a choice?
Considering how durable Carbon Fiber is compared to Aluminum tubes, for
~$100 more, it seems nuts not to go with CF.
Any word on this?


The NexStar 9.25GPS that I am currently reviewing has a Carbon-fiber tube. I
worry about a sharp object hard impact which, on an aluminum tube, would only
dent things and remove some paint, but with a Carbon fiber tube, might
actually punch a hole in things. If I had been Celestron, the aluminum tube
would have been my choice, despite the mechanical considerations. Clear skies
to you.
--
David W. Knisely
Prairie Astronomy Club:
http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/

**********************************************
* Attend the 11th Annual NEBRASKA STAR PARTY *
* July 18-23, 2004, Merritt Reservoir *
* http://www.NebraskaStarParty.org *
**********************************************


  #9  
Old February 21st 04, 07:18 PM
David Knisely
external usenet poster
 
Posts: n/a
Default C9.25 not available in Carbon Fiber tube for ASGT goto?

Orion wrote:

Say it ain't so...
So far, the only solution I've found is to order the OTA and GT-5 Goto mount
separately.
Why would Celestron make such a choice?
Considering how durable Carbon Fiber is compared to Aluminum tubes, for
~$100 more, it seems nuts not to go with CF.
Any word on this?


The NexStar 9.25GPS that I am currently reviewing has a Carbon-fiber tube. I
worry about a sharp object hard impact which, on an aluminum tube, would only
dent things and remove some paint, but with a Carbon fiber tube, might
actually punch a hole in things. If I had been Celestron, the aluminum tube
would have been my choice, despite the mechanical considerations. Clear skies
to you.
--
David W. Knisely
Prairie Astronomy Club:
http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/

**********************************************
* Attend the 11th Annual NEBRASKA STAR PARTY *
* July 18-23, 2004, Merritt Reservoir *
* http://www.NebraskaStarParty.org *
**********************************************


  #10  
Old February 21st 04, 08:30 PM
Rod Mollise
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Posts: n/a
Default C9.25 not available in Carbon Fiber tube for ASGT goto?

The NexStar 9.25GPS that I am currently reviewing has a Carbon-fiber tube. I

worry about a sharp object hard impact which, on an aluminum tube


Hi David:

Maybe this could be a problem. But I've yet to hear of anybody sustaining tube
damage of this kind over the--what?--three plus years the scope's been around.
I really can't see a downside to the carbon fiber tube. 'Course, the jury is
out on how it will hold up over the long run...but I suspect "very well."


Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers!
Goto http://members.aol.com/RMOLLISE/index.html
 




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