Contains:  Other
camera or telescope artifact?, apaquette

camera or telescope artifact?

Description

I almost always take flats (with an EL panel) prior to imaging.
Every so often I get this very bizarre "feature" that shows up and slowly disappears.  I assume it is frost, but am not sure on what surface it is forming.  It was well below freezing and fairly humid.
I have had frost appear on the sensor before and this is definitely not that, but maybe it is on the cover slip or even the lens group.  The flat panel was not on during these images -- I was just waiting for both the artifact to disappear and the ambient light to get low enough to take the flats. 
At the beginning I half expected to witness mitosis occurring.

Comments