[Stefan Buda]

Got to try my small Busack-Riccardi-Honders on a comet finally.
This was 40x120seconds with an old QHY8 camera. Darks and flats applied.
The first image is the full 3x2deg field. The second one is a roughly one degree field crop, at 100% resolution.

The ion tail is barely distinguishable.

I'm still getting stray light problems with the instrument. I will have to add a secondary baffle.