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



    
        

            Randal Healey
M81 and M82 Bodes Galaxy and the Cigar Galaxy
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M81 and M82 Bodes Galaxy and the Cigar Galaxy

Getting plate-solving status, please wait...
M81 and M82 Bodes Galaxy and the Cigar Galaxy, 



    
        

            Randal Healey
M81 and M82 Bodes Galaxy and the Cigar Galaxy
Powered byPixInsight

M81 and M82 Bodes Galaxy and the Cigar Galaxy

Technical card

Imaging telescopes or lenses: Explore Scientific 102mm Triplet APO CF

Imaging cameras: SBIG STF-8300M

Mounts: Celestron CGEM-DX

Guiding telescopes or lenses: Orion Mini 50mm Guide Scope Orion 50mm Guidescope

Guiding cameras: Orion StarShoot AutoGuider

Software: PHD2 Guiding PHD 2.5  ·  PixInsight 1.8 Ripley  ·  PhotoShop CS6  ·  Sequence Generator Pro SGP

Filters: Astrodon HA 36mm - 5nm  ·  Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance  ·  Astrodon RED 36mm - Gen2 E-Series Tru-Balance  ·  Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance  ·  Astrodon Olll 36mm - 3nm

Accessory: Explore Scientific 2" Field Flattener  ·  Home Observatory (Self Designed)  ·  Orion Starshoot Autoguider  ·  MoonLite Crayford 2.5" Moonlight Motor Focuser


Dates:March 27, 2019March 28, 2019March 29, 2019March 30, 2019

Frames:
Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance: 22x600" (3h 40') -20C bin 1x1
Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance: 15x600" (2h 30') -20C bin 1x1
Astrodon HA 36mm - 5nm: 19x600" (3h 10') -20C bin 1x1
Astrodon RED 36mm - Gen2 E-Series Tru-Balance: 18x600" (3h) -20C bin 1x1

Integration: 12h 20'

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 22.87 days

Avg. Moon phase: 42.48%


Basic astrometry details

Astrometry.net job: 2622433

RA center: 9h 55' 46"

DEC center: +69° 18' 50"

Pixel scale: 1.574 arcsec/pixel

Orientation: 8.504 degrees

Field radius: 0.896 degrees


Resolution: 3275x2464

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory

Description

M81 and M82 are a pair of galaxies in the constellation Ursa Major. The pair are located approximately 10 degrees northwest of the "Big Dipper" pointer star Dubhe (Alpha Ursae Majoris). The apparent separation of the galaxies is 31 arc-minutes but at a distance of 12 million light-years, their actual distances from each other is 150,000 light years. They are the largest members of the M81 Group, a physical association of of 34 galaxies.

M81 and M82 are best seen during the spring. The image above shows M81 (Lower) and M82 (Upper)

Comments

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M81 and M82 Bodes Galaxy and the Cigar Galaxy, 



    
        

            Randal Healey