How long has the derotator being used

cytan299 / field_derotator

A Field DeRotator for Alt-Az Mounted Telescopes Used for Astrophotography

GNU General Public License v3.0

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How long has the derotator being used #2

Closed mrivas closed 9 years ago

mrivas commented 9 years ago

Hello cytan299.

Congratulations for you field de-rotator. May I ask if you have studied how long it can be used without producing significant distortions in the images?

Thanks, Marcelo

cytan299 commented 9 years ago

Experimentally, at least 8 minutes. But this depends on where the telescope is pointing. I intend to take 10 min frames to get a shot of M81. Unfortunately, not many clear nights around here.