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Contains:  Great Nebula in Andromeda, M 110, M 31, M 32, NGC 205, NGC 221, NGC 224
Andromeda Galaxy Mosaic, 


            Scott Tucker
Andromeda Galaxy Mosaic
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Andromeda Galaxy Mosaic

Technical card

Dates:Sept. 30, 2019Oct. 1, 2019

Optolong L-Pro 2": 120x60" (gain: 120.00) -10C bin 1x1
Optolong L-eNhance: 30x120" (gain: 120.00) -10C bin 1x1
Baader Luminance 50mm square: 44x600" -25C bin 1x1

Integration: 10.3 hours

Darks: ~5

Flats: ~5

Bias: ~5

Avg. Moon age: 2.56 days

Avg. Moon phase: 7.51%

Mean SQM: 20.53

Basic astrometry details job: 2957723

RA center: 0h 41' 54"

DEC center: +41° 19' 22"

Pixel scale: 1.611 arcsec/pixel

Orientation: 224.318 degrees

Field radius: 1.172 degrees

Resolution: 4500x2677

Locations: Mt. Hopkins, Tucson, AZ, United States; Backyard, Tucson, AZ, United States

Data source: Traveller


I captured a two-frame mosaic of Andromeda with a 10" CDK and Apogee U16M from a dark sky site, then added color data from a HyperStar 9.25" and ZWO ASI294 camera from my backyard. 10.33 hours total exposure time over two nights.

I used an Optolong L-Pro for the basic color data, then added data from an L-eNhance filter which brought out the red HII regions.

Capture and stacking in MaxIm DL. PixInsight for background extraction, color balance, non-linear stretching, deconvolution, noise reduction. Microsoft ICE for mosaic composition. MaxIm DL again for alignment of the luminance mosaic with the color images. Photoshop for combination of the L and color data, plus further enhancements.

AG Optical CDK 10" f/6.7, Apogee U16M, Baader L filter, 22 x 600 sec per frame, SQM 21.4

Celestron 9.25" SCT, HyperStar v4 f/2.2, ZWO ASI294MC, Optolong L-Pro = 120 x 60 sec, Optolong L-eNhance filter = 30 x 120 sec, SQM 20.1



Scott Tucker
License: None (All rights reserved)

Sky plot

Sky plot


Andromeda Galaxy Mosaic, 


            Scott Tucker