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Ric,
Thanks for the info. This camera originally had the filter bar but I removed it and the holder (bridge) and replaced it with a ScopeStuff adaptor plate (in the picture). I have a Baader UV/IR filter attached to the ScopeStuff adaptor (LH picture) and the Meade filters in front of this in the filter wheel. I have the Meade IR filter in the wheel with the RGB ones so I can do LRGB without changing the focus.
I didn't realise the CCD chip had a clear glass plate over it - that might explain why I can't blow the dust off. How do you clean dust out if it is between the glass and the CCD?
Peter
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