Andromeda Galaxy (LRGB), 2022

Date / Location

September & October 2022, Warwickshire, GMT+0, United Kingdom, TEMP: 20C, Bortle Class 4 ~SGM: 21.26 mag./arc sec2

Equipment

Camera: ZWO ASI 1600MM PRO

Filter: Astrodon LRGB Gen2 E-Series Tru-Balance Filterset

Imaging Telescope: Takahashi FSQ-85ED

Correcting Lens: Takahashi Flattener 1.01x (composite focal length at 455mm and focal ratio at f/5.4)

Mount: Takahashi EM-400 Temma 2M guided with a Takahashi GT-40 guide scope and ZWO ASI 120MM mini guide camera

Image Quality

Exposure time per image / number of composites and sensitivity

71 x 120s L (76G 15B, BIN1, -20C)

26 x 180s L (76G 15B, BIN1, -20C)

4 x 120s R (76G 15B, BIN1, -20C)

30 x 180s R (76G 15B, BIN1, -20C)

24 x 120s G (76G 15B, BIN1, -20C)

8 x 180s G (76G 15B, BIN1, -20C)

26 x 120s B (76G 15B, BIN1, -20C)

3 x 180S B (76G 15B, BIN1, -20C)

Total Integration Time

approx. 7hrs 30mins

Calibration Frames

25 Darks, 50 Bias, 25 Flats

Software

SharpCap Pro

PHD2

PixInsight 1.8 Core

Photoshop