심심풀이 재보정입니다.

M81에 Ha를 입히는 게 쉽지 않네요.

 

 

 

 

 

 

M81　Bode's Galaxy　큰곰자리 보데은하

2022. 1.27~29, 2.4~5　Seoul Astronomy Club Observatory, Hongcheon, KOREA

 

GSO RC8 (F8) / Rainbow Astro RST-135E / ZWO ASI294MM Pro (-20°C)

HERCULES S8239 OAG / ZWO ASI290MM Mini / / ZWO ASIAIR PRO, ASIAIR Plus

Optolong L / 2x2 bin / gain 120 / 300.0 sec x 76 / dark 50

Optolong RGB / 2x2 bin / gain 120 / 300.0 sec x 58, 64, 55 each / dark 50

Orion H-Alpha (7nm) / 2x2 bin / gain 200 / 300.0 sec x 44 / dark 50

 

DeepSkyStacker, PixInsight, Photoshop