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Contains:  Bode's nebulae, M 81, NGC 3031
Getting plate-solving status, please wait...

M81 L-RGB-Ha

Technical card

Dates:Jan. 31, 2020Feb. 1, 2020

160x60" (gain: 50.00) 5C bin 1x1
18x300" -20C bin 1x1
Optolong H-alpha 7nm 2": 40x180" (gain: 200.00) 5C bin 1x1

Integration: 6.2 hours

Darks: ~15

Flats: ~30

Avg. Moon age: 6.42 days

Avg. Moon phase: 39.88%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details job: 3218676

RA center: 9h 55' 42"

DEC center: +69° 4' 8"

Pixel scale: 1.209 arcsec/pixel

Orientation: 359.632 degrees

Field radius: 0.363 degrees

Resolution: 1809x1180

Locations: Western Hungary, Páli, Hungary

Data source: Backyard


M81 imaged under, rather mediocre sky conditions.
Lum : 160 x 1 min
Ha : 40 x 3min
Colour : 18 x 5min



sky-watcher (johny)

Sky plot

Sky plot


M81 L-RGB-Ha, 


            sky-watcher (johny)