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Old 20-08-2009, 05:36 AM
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pmrid (Peter)
Ageing badly.

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Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,678
Quote:
Originally Posted by JohnH View Post
The only issue I have is focusing the guide and main cameras together - there is some need for spacers to achieve this - in my case I had to move the imaging camera back about 1cm to be able to focus my guide cam (a QHY5) and my imaging cameras (DS-145M Ice and a Canon 20D) at the same time.
That's the little reservation I have. Both cameras move together in the Crayford focuser. I suppose the answer is that focus in the guidecam is not mission-critical whereas the imaging camarea is. But swapping an eyepiece for the imaging camara, for example,unless it is parafocal with the camera is going to screw your guiding and vice versa. Seems a bit of a design drawback.
Peter
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