Hello all,
The image of the Helping Hand Nebula already taken from October to December 2021 by Pier 5, was chosen today on Astrobin as image of the day.
Link:https://astrob.in/qv9yh7/0/
At that time Pier 5 still had the Zwo Asi 2600MC pro. The Fits header says that the gain value was set to 0.243. Two people on Astrobin asked me why exactly this value was chosen. I can't answer the question because I don't know the exact reason.
Does anyone else know the reason why this value was chosen?
Regards
Darius