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Contains:  M 82, NGC 3034, M 81, Bode's nebulae, NGC 3031
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Galactic Duo - M81/82, 


Galactic Duo - M81/82

Galactic Duo - M81/82

Technical card

Resolution: 7655x5212

Dates:May 8, 2019May 21, 2019June 3, 2019June 8, 2019June 23, 2019July 3, 2019July 8, 2019July 24, 2019

Astrodon BLUE 31mm - Gen2 E-Series Tru-Balance: 24x300" bin 1x1
Astrodon GREEN 31mm - Gen2 E-Series Tru-Balance: 21x300" bin 1x1
Astrodon HA - 3nm: 42x600" bin 1x1
Astrodon LUM 31mm - Gen2 E -Series Tru-Balance: 133x300" -20C bin 1x1
Astrodon RED 31mm - Gen2 E-Series Tru-Balance: 19x300" bin 1x1

Integration: 23.4 hours

Darks: ~50

Flats: ~50

Flat darks: ~50

Bias: ~100

Avg. Moon age: 9.48 days

Avg. Moon phase: 37.51%

Bortle Dark-Sky Scale: 5.00 job: 2864630

RA center: 148.949 degrees

DEC center: 69.343 degrees

Pixel scale: 0.560 arcsec/pixel

Orientation: 261.752 degrees

Field radius: 0.720 degrees

Data source: Backyard


This was one of the longer processing efforts I've had. Wanted to bring out the starburst flows of M82 and try to pick up some IFN from my backyard orange zone. I gave up on the IFN - had it in the data but not nearly enough to do it any justice - but I'm happy with the Ha in both galaxies. I haven't revisited these targets since I first started imaging several years ago.

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Sky plot

Sky plot


Galactic Duo - M81/82,