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Equipment Discussions >> ATM, Optics and DIY Forum
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polaraligned
sage


Reged: 12/26/08
Posts: 226
Loc: P. R. of New Jersey
Re: 20 inch RC Robotic Build...a TEAM Effort.... new [Re: PrestonE]
      #3315457 - 09/04/09 05:21 PM
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Quote:


The Tapered ends that fit into the CF Tubes are releaved into about the end of the start of the CF tube and then the adjusting threaded area starts.

Best Regards,

Preston



Ahh...That makes sense....I knew the Invar was used for it's thermal characteristics, but the big aluminum hub it is screwed into seemed to negate that positive characteristic.

I will probably be making my CF tube ends the same way. The commercial guys like Planewave and RCOS use all aluminum, but at f/8 the depth of focus is a lot larger than the f/3.3 I will be at. Using invar is expensive but will remove about 8 linear inches of aluminum from the truss length.

Mike, the Paramount is rated to hold a 150# scope *plus* the counterweights.

Thanks,
Scott

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PrestonE
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Reged: 04/29/05
Posts: 1170
Loc: Houston,Texas
Re: 20 inch RC Robotic Build...a TEAM Effort.... [Re: polaraligned]
      #3316023 - 09/04/09 10:53 PM
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yes Scott it is the details that we worry about and work on...

Very Best Regards,

Preston

--------------------
A few I enjoy,
and a few more in the works ;<)

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PrestonE
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Re: 20 inch RC Robotic Build...a TEAM Effort.... new [Re: PrestonE]
      #3459847 - 11/20/09 11:15 PM
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Update

It looks like we will be donating our time on the scope to Physics Students at Celaya University here in Mexico for one of thier selected projects that we choose.

We are very excited about this learning experiance in another country....

Very Best Regards,

Preston

--------------------
A few I enjoy,
and a few more in the works ;<)

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Sky Captain
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Reged: 11/07/04
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Loc: Issaquah, WA.
Re: 20 inch RC Robotic Build...a TEAM Effort.... new [Re: PrestonE]
      #3459858 - 11/20/09 11:22 PM
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What a great idea Preston!
They probably don't have access to such a great scope.

--------------------
Equipment Overload!
Kerry



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