Observation by Ian Sharp: M31 Reprocessed

Uploaded by

Mr Ian David Sharp


Ian Sharp


2021 Dec 20 - 13:48


2021 Dec 20 - 13:51


The Andromeda Galaxy (M31)

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Field centre

RA: 00h42m
Dec: +41°16'
Position angle: +91°19'

Field size

2°53' × 1°53'

  • Takahashi FSQ-85EDX f/5.3 Quadruplet APO Refractor
  • QHY268C CMOS OSC Camera
  • Skywatcher AZ-EQ6 Pro Mount
  • Pegasus Astro FocusCube2 auto focuser
  • ZWO 60mm F/4.67 guide scope
  • ZWO ASI290MM Mini mono guide camera

10 hours RGB; 7 hours HA


Ham Observatory, Near Selsey, UK

Target name

M31 Galaxy in Andromeda


M31 Reprocessed

About this image

A reprocessed version with improved colour balance. Using the one-shot colour QHY268C CMOS camera, the image consists of 10 hours of 4 minute exposures using an Astronomik L filter and 7 hours of narrowband using the Optolong L-Extreme filter from which the H-Alpha signal was extracted. All processing was performed in PixInsight. All images were calibrated with Darks, Flats and Flat-Darks. The Ha data was combined with the red channel to enhance the wonderful nebulae within the spiral arms of M31.

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Martina McGovern
Martina McGovern, 2021 Dec 20 - 16:09 UTC

Beautiful capture Ian.

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