Lens: Canon FD 400m @f/4
Filters: UV-IR stop
Camera: Canon 60D
Focus: Bahtinov
Guiding: No
Mount:EQ6 OnStep Mt. Pleasant
I also tried on 20/12, and I am pretty sure it brightened significantly.. core was saturated at settings from previous nigh, so I had to reduce both ISO and exposure time to get something (still working on it).