Streak on Flat

Acquisition Deep Sky Artifacts
2 replies•82 views
Jerry Gerber avatar
Jerry Gerber avatar
Anybody know what this streak on a flat might be caused from?  I just noticed it for the first time this morning, my scope is in a permanent location and the sensor and filters haven't been removed.   Could it be dew or a scratch?  The scratch hypothesis is unlikely as I would have noticed it before. 

Thanks,
Jerry

Well Written Engaging
Tony Gondola avatar
Tony Gondola avatar
Is it calibrating out?
Jerry Gerber avatar
Jerry Gerber avatar
Tony Gondola:
Is it calibrating out?

Don't know yet.  I am running WBPP right now and will know in a few hours.  It might be a water streak on the sensor cover, or a filter.
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