Messier 31 (The Andromeda Galaxy) mosaic

This 3x3 mosaic of M31 is my largest project so far. The 9 panels total 6 hours of exposure, using my QHY533M and a luminance filter. 36 files where stacked using Pixinsight into the nine raw panels. The mosaic assembly was done using Pixinsight (image solver, mosaic by coordinates, and gradientmerge mosaic). Further processing was also done in Pixinsight and Photoshop. 

Imaging Telescope: Vixen ED81s f/7.7 

Mount: Skywatcher HEQ5 Synscan Pro (belt mod) 

Camera: QHY 533M 

Filter Wheel: QHY CFW3S-SR 

Filters: L

Guiding camera: ZWO ASI120MM Mini (mono)

Guidescope: SkyWatcher EvoGuide 50ED

Constellation: Andromeda

Date: 12-13 Aug 2024 

Location: Albireo Observatory 3, Achaia, Greece

Sky brightness: B2

Exposure Time: 

9-pannel mosaic

L: 36x600 sec (gain: 56.00, offset: 12.00) 0°C bin 1×1 

Acquisition: N.I.N.A v3 

Processing: Pixinsight, Photoshop