It was a good clear night for Batavia. So it was pretty dark except for the moon. As a result of expecting it to be dark up on the roof, I ran all night with the dome closed on TOM2 and TOM3. Sigh! The shutter is sticking on TOM1 so last night's data is near zero value. I do have a nice set of darks for TOM2 and TOM3. ;^) Tom Droege