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Hi there. I have done further investigations re CCD cameras (thanks Poita for your help!). The one I am now leaning towards is the Imaging Source DBK 21AU04.AS. It's an entry level CCD, however, it has positive reviews and seems easy enough to use.
I have contacted a dealer who told me that that with my Sky Watcher dobsonian collapsible I could have a focussing issue with the DBK21. Apparently, there may not be enough 'rack in' in the Sky Watcher focusser to achieve focus through the CCD camera. According to the dealer, one way to get around this would be not to extend the top cage fully.
Has any SW collapsible dobs owner had any focussing issue with CCDs an in particular with the Imaging Source DBK 21AU04.AS?
Thanks!
Eric
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