Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
M31 LHaRGB with synthetic luminance, turfpit
M31 LHaRGB with synthetic luminance
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M31 LHaRGB with synthetic luminance

M31 LHaRGB with synthetic luminance, turfpit
M31 LHaRGB with synthetic luminance
Powered byPixInsight

M31 LHaRGB with synthetic luminance

Equipment

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Acquisition details

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Description

Captured 10/15/16 August 2021 using Pier 3 at roboscopes.com.  ASA 12n F3.6 Newtonian, FLI ML16200 CCD, Paramount ME.

R/G/B each 10x120s, Ha 12x300s.  30 bias, 8 darks, 6 flats.
Using the suggested filter weights of R 1.2 : G 1.0 : B 1.333, colour balance was achieved using 8 R, 7 G and 9 B frames.  The best 10 Ha frames were stacked.

In Astro Pixel Processor 4 stacks Ha, R, G, B were created.  The 4 stacks were combined to create a synthetic luminance.  The L, Ha, R, G, B were combined using the 'RGB colour combine scheme' LHaRGB-1 using all the default multipliers offered by the application.  Cropping & 'Remove Light Pollution' were carried out in APP with final black point adjustment in GIMP.

Dave

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M31 LHaRGB with synthetic luminance, turfpit