Streak on Flat [Deep Sky] Acquisition techniques · Jerry Gerber · ... · 2 · 83 · 1

jsg 9.55
...
· 
·  Share link
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

Flat with Streak.jpg
Like
Gondola 8.11
...
· 
·  Share link
Is it calibrating out?
Like
jsg 9.55
Topic starter
...
· 
·  Share link
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.
Like
 
Register or login to create to post a reply.