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Contains:  Bode's nebulae, M 81, NGC 3031
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M81 - Bode's Nebula, 


            Josh Woodward
M81 - Bode's Nebula
Powered byPixInsight

M81 - Bode's Nebula

Technical card

Resolution: 2813x2160

Dates:March 31, 2019

ZWO Blue 1.25": 50x60" (gain: 75.00) -15C bin 1x1
ZWO Green 1.25": 50x60" (gain: 75.00) -15C bin 1x1
ZWO Ha 1.25": 25x300" (gain: 75.00) -15C bin 1x1
ZWO L 1.25": 198x30" (gain: 75.00) -15C bin 1x1
ZWO Red 1.25": 56x60" (gain: 75.00) -15C bin 1x1

Integration: 6.3 hours

Darks: ~50

Flats: ~15

Flat darks: ~25

Bias: 0

Avg. Moon age: 25.12 days

Avg. Moon phase: 20.45%

Bortle Dark-Sky Scale: 5.00

Mean SQM: None

Mean FWHM: None

Temperature: 8.00

Basic astrometry details job: 2620409

RA center: 9h 55' 31"

DEC center: +69° 3' 18"

Pixel scale: 0.864 arcsec/pixel

Orientation: 305.760 degrees

Field radius: 0.426 degrees

Locations: backyard, Chico, CA, United States

Data source: Backyard


Miraculously, we had couple of clear nights. It has rained 175% of normal in Northern California. I performed a test. I went through a full day of stacking with PixInsight and compared it to one hour of stacking with DSS. I found that the quality was difference was negligible and the effort difference was enormous. I am going to stick with DSS to stack from now on. PixInsight is far too cumbersome and not user friendly.



Josh Woodward
License: None (All rights reserved)

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M81 - Bode's Nebula, 


            Josh Woodward