Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205, The star νAnd, The star 32And
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M31 from Colle dell'Agnello, 


            Marco Gulino
M31 from Colle dell'Agnello

M31 from Colle dell'Agnello

Technical card

Resolution: 4524x3552

Dates:Aug. 9, 2018

ZWO Blue Filter Optimized for ASI1600: 34x30" (gain: 360.00) bin 1x1
ZWO Green Filter Optimized for ASI1600: 27x30" (gain: 360.00) bin 1x1
ZWO L (IR-Cutoff) Filter Optimized for ASI1600: 18x90" (gain: 140.00) bin 1x1
ZWO Red Filter Optimized for ASI1600: 33x30" (gain: 360.00) bin 1x1

Integration: 1.2 hours

Darks: ~18

Flats: ~37

Bias: ~1000

Avg. Moon age: 27.30 days

Avg. Moon phase: 5.54% job: 2197292

RA center: 10.524 degrees

DEC center: 41.314 degrees

Pixel scale: 2.950 arcsec/pixel

Orientation: 72.490 degrees

Field radius: 2.356 degrees

Locations: Colle dell'Agnello, Chianale, Cuneo, Italy

Data source: Traveller


On this night I wanted to shoot another subject, but after some minor equipment issues, and more importantly after being completely surrounded by clouds for almost an hour, it was alread too late, and I had very little time to get a proper shot at it.

So I decided to go for the evergreen M31, a very easy subject, showing so much data even with a relatively short total exposure time.

This is the result of 1 hour and 12 minutes of exposures (originally 1:45, some frames were discarded for their poor quality).



Marco Gulino
License: None (All rights reserved)

Sky plot

Sky plot


M31 from Colle dell'Agnello, 


            Marco Gulino

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Imagers of Italy