🏅Messier 45

• Photographer : Yongho Ji

• Date : 2021-12-27~28

• Place : Seokmodo(Bortle class 4)

• Telescope : Skywatcher Esprit 120ED / 1.0x Flattener

• Mount : SONA 25-25 Harmonic drive mount

• Camera : ZWO ASI2600mm pro, Gain 100, -20°C, 1bin

• Guide : Svbony 60mm f/4, ZWO ASI120mm mini

• Filters : ZWO LRGB 36mm

• Exposure :

Light - L : 180sec x 40, RGB : 120sec x 30

Bias - 1ms x 80

Dark - 120sec x 60, 180sec x 60

Flat - LRGB 1sec x 30

DarkFlat - 1sec x 60

• Software : ZWO ASIAIR pro, DSS, Photoshop, Pixinsight