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Celestron Ultima - Primary Mirror Locking?

Started by cdub1955, 10/09/2007 11:07AM
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Posted 10/09/2007 11:07AM Opening Post
Chris Watts
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Join Date: Sep 2007

Location: Rio Rancho NM, US

Posts: 42

Hello,

Is it possible to lock down easily the primary mirror on a Celesron Ultima?

Thanks,
Chris
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Posted 10/09/2007 11:46AM #1
Rod Mollise
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Join Date: Jul 2002

Location: Mobile AL, US

Posts: 883

It's not. Locking the mirror will require drilling and tapping suitably placed holes in the rear cell. Not for the faint of heart. Frankly, mirror flop is not bad on this OTA (I have a 1995 model). I've only had a problem (once) when I forgot to:

Finish focus uphill.

Avoid imaging objects crossing the local meridian.

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