Sadr region

• Photographer  : Hyunwoo Kim

• DATE : Jun 2022 ~ Aug 2022

• Place : Cheorwon, Danyang, Hongcheon,  Hwacheon (Bortle 4), Gimpo (Bortle 5)

• Telescope : SDT80 (FL 384mm/F4.8) 

• Tripod & Mount : AZ-Eq6

• Guide scope/camera : ZWO mini guide scope / ASI 120mm mini

• Camera : 1600mm pro (-10 deg ~ -15 deg)

• Filter : Optolong LRGBHO

• Exposure : Total 24.75 hours 

Optolong L filter : 120s x 60 (gain 139)

Optolong R filter : 180s x 59 (gain 139)

Optolong G filter : 180s x 45 (gain 139)

Optolong B filter : 180s x 51 (gain 139)

Optolong Ha filter : 300s x 107 (gain 200)

Optolong O3 filter : 300s x 73 (gain 200)

• Software : Pixinsight