Quote:
Originally Posted by rumples riot
Mike,
large dobs on servo cat and argo navis can work for both DSO and Planetary. Yes a derotator is necessary for DSO work.
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Rumples, I wouldn't give any prospective purchaser of a large dob the idea that serious deep sky photograghy with large long focal length scopes is being done with Servo Cats and field derotator. Can you link to any websites of people doing this? I know it is possible to do short 5 minute exposures with expensive commercial equatorial tracking platforms .
Cheers, Mark