IC 1805

• Photographer : Hyunwoo Kim

• DATE : 18th Oct 2021

• Place : Gimpo (Bortle 5)

• Telescope : SDT80 (FL 384mm/F4.8)

• Tripod & Mount : IEQ45

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

• Camera : 1600mm pro (-20 deg)

• Filter : Optolong SHO

• Exposure : Total 4.1 hours

Optolong Ha filter : 180s x 28 (gain 200)

Optolong S2 filter : 180s x 20 (gain 200)

Optolong O3 filter : 180s x 34 (gain 200)

• Software : Pixinsight