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Technical card

Resolution: 4046x4075

Dates: Aug. 18, 2016Aug. 24, 2016Aug. 29, 2016

8x1200" bin 1x1
9x1200" -30C bin 1x1
Baader L 36mm: 180x120" -20C bin 1x1

Integration: 11.7 hours

Darks: ~14

Flats: ~20

Bias: ~50

Avg. Moon age: 20.47 days

Avg. Moon phase: 58.37%

Bortle Dark-Sky Scale: 4.00 job: 1228623

RA center: 10.692 degrees

DEC center: 41.353 degrees

Pixel scale: 2.742 arcsec/pixel

Orientation: -89.400 degrees

Field radius: 2.186 degrees


Finished up the 12 panel mosaic.
LUM-15x120sec/each panel
QHY23M & 11"Celestron Hyperstar(F/2)

RGB-17x1200sec,, 3 panel mosaic
(5hr. 40min)
QHY10 OSC & AstroTech AT65EDQ

3 panel mosaic (RGB color) added to 12 panel Luminance mosaic

Images acquired with APT(AstroPhotography Tool) and Nebulosity4. Pre-Processed with PixInsight. Post Processing with PS CS6 and PI

Located in the constellation of Andromeda(hence the name :) )this large spiral galaxy is 2.5 million light years away. It can be seen with the naked eye on moonless nights from even moderately light polluted skies. It has been recently estimated to contain nearly 1 trillion stars



Chuck Manges


Sky plot

Sky plot


M31 Mosaic, Chuck Manges

Made possible by

APT - Astro Photography Tool