Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY, 



    
        

            Jian Yuan Peng
M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY
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M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY

Getting plate-solving status, please wait...
M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY, 



    
        

            Jian Yuan Peng
M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY
Powered byPixInsight

M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY

Technical card

Imaging telescopes or lenses: TEC 160FL

Imaging cameras: ZWO ASI6200MM Pro

Mounts: Astro-Physics Mach 2 GTO

Guiding telescopes or lenses: TEC 160FL

Guiding cameras: ZWO ASI290MM Guide Camera

Focal reducers: Tec frc 0.9x Tec frc

Filters: Astrodon Tru-Balance Gen 2 - E-Series LRGB

Accessory: Astromania Off-Axis Guider


Dates:March 31, 2021April 1, 2021April 3, 2021April 6, 2021April 11, 2021

Frames:
Astrodon Gen2 Blue: 81x300" (6h 45') (gain: 0.00) -10C bin 1x1
Astrodon Gen2 Green: 80x300" (6h 40') (gain: 0.00) -10C bin 1x1
Astrodon Gen2 Red: 81x300" (6h 45') (gain: 0.00) -10C bin 1x1
Astrodon Gen2E Lum: 222x120" (7h 24') (gain: 0.00) -10C bin 1x1
Astrodon Gen2E Lum: 50x180" (2h 30') (gain: 0.00) -10C bin 1x1

Integration: 30h 4'

Darks: ~32

Flats: ~32

Flat darks: ~32

Bias: ~128

Avg. Moon age: 22.25 days

Avg. Moon phase: 51.90%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 4448001

RA center: 9h 55' 30"

DEC center: +69° 22' 8"

Pixel scale: 0.784 arcsec/pixel

Orientation: 90.927 degrees

Field radius: 0.901 degrees


Resolution: 6906x4558

Data source: Backyard

Description

M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY
These two galaxies, about 150,000 light-years distance in Ursa Major, started to close to each other about 20 million years ago which made M81 more massive and larger and deformed M82 to a starburst formation by gravitational interactive.

M81(on the right) is known as Bode´s Galaxy(NGC 3031) which is a spiral galaxy with a radius of 45,000 light years and 11.74 million light-years away from Earth. M81 has a very active nucleus center - a supermassive black hole with a mass of around 70 million times the mass of our Sun.

M82(on the left) is known as Cigar Galaxy(NGC 3032) which is a starburst galaxy with a radius of 18,500 light years and 11.4~12.4 million light years away from Earth. M82 is famous for its heavy star-forming activities affected by its larger neighbor galaxy M81. Scientists have discovered the supernova and the brightest pulsar by studying M82.

M81 and M82 can be viewed easily using binoculars and a small telescope during the spring.

Technical details:
Telescope: TEC 160FL + TEC FRC 0.9x
Mount: Astro-Physics Mach 2 GTO
Imaging cameras: ZWO ASI6200MM
Software: PHD2, PixInsight, Lightroom 6.4, Sequence Generator Pro, Photoshop CS6
PhotometricColorCalibration data:
Resolution ............... 0.783 arcsec/px
Rotation ................. -90.769 deg
Observation start time ... 2021-03-31 04:57:38 UTC
Observation end time ..... 2021-04-11 04:36:33 UTC
Focal distance ........... 990.11 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 30' 9.5" x 59' 30.3"
Image center ............. RA: 9 55 29.685 Dec: +69 22 08.18
Location: Palo Alto, California, USA
Filter: Astrodon 50mm Unmounted LRGB Gen2 E-Series Filter Sets
Blue 81x300" 6.75 Hours Bin1x1
Green 80x300" 6.6 Hours Bin1x1
Red 81x300" 6.75 Hours Bin1x1
LUM 222x120" 50x180" 9.9 Hours Bin1x1

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M81 & M82 - BODE'S GALAXY & THE CIGAR GALAXY, 



    
        

            Jian Yuan Peng