Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034  ·  NGC 3077
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M81 & M82, 



    
        

            Aaron Hakala
M81 & M82
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M81 & M82

Getting plate-solving status, please wait...
M81 & M82, 



    
        

            Aaron Hakala
M81 & M82
Powered byPixInsight

M81 & M82

Technical card

Imaging telescopes or lenses: Stellarvue SVX080T-3SV

Imaging cameras: ZWO ASI 1600MM-C

Mounts: SkyWatcher EQ6-R Pro

Guiding telescopes or lenses: Orion 50 mm guidescope

Guiding cameras: Orion Starshoot Autoguider

Software: Adobe Photoshop CC 2021  ·  AstroPixel Processor  ·  PHD2  ·  Seqence Generator Pro

Filters: Astronomik Deep Sky B 2"  ·  Astronomik Deep Sky G 2"  ·  Astronomik Deep Sky R 2"  ·  Astronomik L-3 - UV IR Block Filter 2"

Accessory: ZWO EFW 2" 7 Position  ·  Pegasus Astro Focus Cube2  ·  Pegasus Astro Pocket Power Box  ·  Azulle Access 3 mini stick computer  ·  Kendrick Astro Instruments 7 port USB hub


Dates:Feb. 6, 2021

Frames:
Astronomik Deep Sky B 2": 60x120" (2h) (gain: 139.00) -20C bin 1x1
Astronomik Deep Sky G 2": 60x120" (2h) (gain: 139.00) -20C bin 1x1
Astronomik Deep Sky R 2": 60x120" (2h) (gain: 139.00) -20C bin 1x1
Astronomik L-3 - UV IR Block Filter 2": 60x120" (2h) (gain: 139.00) -20C bin 1x1

Integration: 8h

Darks: ~30

Avg. Moon age: 24.03 days

Avg. Moon phase: 30.55%

Bortle Dark-Sky Scale: 3.00


Basic astrometry details

Astrometry.net job: 4215442

RA center: 9h 56' 0"

DEC center: +69° 12' 0"

Pixel scale: 1.613 arcsec/pixel

Orientation: 285.703 degrees

Field radius: 1.244 degrees


Resolution: 4411x3375

Data source: Traveller

Description

M81 & M82
Travelled to a reasonably dark site. Unfortunately it was windy, seeing was below average. But my chances for clear sky have been very limited here in the Pacific Northwest. This is what I got for one evening. Not enough to bring out any IFN, but ok to bring out the galaxy's. Detail suffered a little from the seeing. I also was not happy with my exposure setting (2 min @139 gain) I think I should have gone with 70gain? I was using standard flattener so scope was F6. galaxy core and many of the brightest stars are overexposed.

Comments

Sky plot

Sky plot

Histogram

M81 & M82, 



    
        

            Aaron Hakala