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Subject: RE: f/6.3 reducer
From: Doug Chesser
Reply To: mapug@shore.net
Date: Sun Dec 04 09:44:05 1994

>I recently purchased a CCD-10 camera for use with my LX200 8" f/10, and
>finally had a chance to try it out. I can see that some things are going
>to be _real_ interesting, like proper focussing and centering an object

>The problem? With the reducer I have a terrible problem with focus
>shift. By that I mean that the image actually moves in and out of focus
>even while viewing, without (of course) even touching the focus control.
>As I said, I had initially chalked this up to my eyes, but during the
>tests of the CCD-10 I found that I could not get star images nearly as
>pinpoint with the reducer as without.
>
>The only explanation I can come up with is that the reducer's optics may
>not have been temperature equalized like those of the scope itself. Does
>this seem like a reasonable explanation?

This is strange. I have a Meade Focal Reducer, and have used the Celestron focal reducer (strange how they look exactly alike, even down to the color and font used for the markings). I've never seen anything like you describe.

Are you sure there isn't anything lose in your focus adjustment assembly?

------------------------------------------------------ _/_/_/ _/_/_/ _/ _/ _/ Doug Chesser _/ _/ _/ <chesser@interramp.com> _/ _/ _/ Atlanta, Georgia _/_/_/ _/_/_/ ------------------------------------------------------ PGP Signature Authentication of this message is available upon request. PGP Public Key block listed under "Doug Chesser" available via <pgp-public-keys>@pgp.mit.edu. ------------------------------------------------------ Date: 12/04/94 Time:11:44:05