Messier 81 & Messier 82
Copyright 2022.HyunWoo Kim All right reserved.
Photographer : Hyunwoo Kim
DATE : 29 Jan 2022
Place : Cheorwon (Bortle class 4)
Telescope : SDT80 (FL 384mm/F4.8)
Tripod & Mount : AZ EQ6 GT
Guide scope/camera : ZWO mini guide scope / ASI 120mm mini
Camera : ASI1600mm pro (-20 deg)
Filter : Optolong LRGBH
Exposure : Total 5.03 hours
Optolong L filter: 180s x 49 (gain 139)
Optolong R filter: 180s x 20 (gain 76)
Optolong G filter: 180s x 20 (gain 76)
Optolong B filter: 180s x 20 (gain 76)
Optolong Ha filter: 300s x 19 (gain 200)
Software : Pixinsight