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M33, Triangulum Galaxy

It is the third-largest galaxy in the Local Group, after the Andromeda Galaxy (M31) and our own Milky Way. It lies approximately 2.9 million light-years from Earth. This spiral galaxy stands out for its well-defined structure and numerous star-forming regions, which glow with a characteristic pink colour due to ionised hydrogen emission in areas where new stars are being born.

General information

Constellation
Triangulum
Category
Galaxies
Date
30 November 2024

Capture

Total time
6h 12min
Subframes
180s (50xCLS bin1, 30xR bin1, 24xG bin1, 20xB bin1)
Gain / Offset
125 / 30
Calibration
50 flat frames, 50 dark-flat frames, 50 library dark frames, without bias frames

Equipment

Telescope
TS102 f/5.6
Camera
ASI294MM at -10ºC
Filters
CLS, R, G, B Astronomik 36mm
Mount
HEQ-5 Pro belt drive
Guiding
Guide scope 60mm f/4 + ASI224MC + PegasusAstro UCH + PPBMicro with PHD2
Focuser
ZWO EAF
Filter wheel
ZWO EFW 7pos

Processing and environment

Processing
Stacked and post-processed with PixInsight 1.8.9-3
Acquisition
NINA
Location
l'Ampolla, Tarragona
Sky
Bortle 4