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Hi Stefan,
If this is a planetary scope, why would you bother with an equatorial set up or a de-rotator? I would have thought that both the exposure times being so short are not a problem and the imaging software takes care of any rotation in the stacking and alignment process. I have no such issues with this and I only use an altaz mount for lunar and planetary imaging. If things can be kept simple and technology gives you an advantage this way, why then go with an eq rig? Or am I missing something?
Alex.
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