IC 1848

• Photographer : Yongho Ji

• DATE : 2021-11-19, 20, 25, 27, 28

• Place : Gimpo in Korea(Bortle class 5)

• Telescope : No brand APO 130mm F/7

• Tripod & Mount : SONA 25-25 Harmonic EQ mount

• Guide scope/camera : Redcat 51, f4.9, ZWO ASI462mc

• Camera : ZWO ASI1600mm pro(Gain 200, Offset 50, -20°C)

• Filters : Astronomik 1.25 Ha(6nm), Oiii(12nm), Sii(12nm)

• Exposure : Total 16.6 hours
  Ha : 600s x 42, Sii : 600s x 21, Oiii : 600s x 37

• Software : ZWO ASIAIR pro, PixInsight, Photoshop

PixelMath
R = 0.3 * Ha + 0.7 * SII

G = 0.2 * OIII + 0.6 * Ha + 0.2 * SII

B = OIII