Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: Focusing SCT

 
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Subject: Re: [M]: Focusing SCT
From: Dan Dickerson
Reply To: mapug@shore.net
Date: Tue Nov 02 00:34:58 1999

While you're here, how about checking out the Astronomy Book List ?

Tim deBortoli wrote:
>
> This may be a silly question but with all the problems with image
> shift/mirror slop etc inherent in the current SCT design why couldn't you
> lock the mirror in postion and have a rack and pinion focuser that screws on
> the visual back. Would it not allow a complete range of focusing?
>
My moving the primary, you get a LARGE focal range, enabling you to
attach almost anything on the end of your scope.

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