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Hemisphere:  Northern  ·  Contains:  Bode's nebulae, M 81, M 82, NGC 3031, NGC 3034, NGC 3077
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M81 & M82 HaLRGB, 


M81 & M82 HaLRGB
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M81 & M82 HaLRGB

Technical card

Imaging telescopes or lenses: Skywatcher ED80

Imaging cameras: ATIK 383L+

Mounts: AZ-EQ6

Guiding telescopes or lenses: Orion thin OAG

Guiding cameras: QHYCCD QHY5

Focal reducers: Skywatcher .85x Focal Reducer & Corrector

Software: Main Sequence Software SGPro  ·  Pixinsight

Filters: Baader Ha 7nm 36mm  ·  Baader Blue 36 mm  ·  Baader Green 36 mm  ·  Baader Luminance 36 mm

Accessory: DIY Focus controllers

Dates:March 31, 2019

Baader Blue 36 mm: 50x300" bin 1x1
Baader Green 36 mm: 30x300" bin 1x1
Baader Luminance 36 mm: 49x900" bin 1x1
Baader Red 36 mm: 30x300" bin 1x1
Baader Ha 7nm 36mm: 50x900" bin 1x1

Integration: 33.9 hours

Avg. Moon age: 25.12 days

Avg. Moon phase: 20.45%

Basic astrometry details job: 3055150

RA center: 9h 55' 40"

DEC center: +69° 16' 51"

Pixel scale: 2.141 arcsec/pixel

Orientation: 266.107 degrees

Field radius: 1.190 degrees

Resolution: 2400x3200

Locations: Remote observatory, Kiev, Ukraine

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Messier 81 and Messier 82 galaxies are part of the M81 Group, a group of 34 galaxies in Ursa Major and Camelopardalis constellations. Due to the distance of approximately 12M light years from Earth, this group together with the Local Group (containing the Milky Way) are relative neighbors in the Virgo Supercluster. M81 is a grand spiral galaxy with a very active nucleus, "hosting" a super-massive black hole with a mass of around 70 million times the mass of our Sun. Running straight through the disk are some dusty lanes, reminding us of a probably violent past encounter with M82 (estimations are that this encounter happened between 50 and 100 million years ago). Near M81 we can see it's companion, the dwarf irregular galaxy Holmberg IX. M82, sometimes called the Cigar galaxy due to it's edge on view from Earth, is the brightest galaxy in the night sky in infrared light, being a lot brighter in infrared than in the visible part of the spectrum. It is a starburst class galaxy that got caught in a gravitational struggle with M81 for past billion years. M82 is famous for its heavy star forming activity and the outburst of ionized hydrogen that can be seen in this photo as jets almost perpendicular to the galaxy disk. Around 100 newly formed globular star clusters have been discovered in this galaxy by Hubble Space Telescope. Many of the newly formed stars are so massive that they have a relatively short life and at the end of it, they explode as supernovas and drive gas and matter out of the galaxy at speeds of millions of kilometers per hour. It is thought that in this way, the elements like oxygen and carbon are spread through the universe.
(c) S&T



License: Attribution Creative Commons

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Sky plot


M81 & M82 HaLRGB, 



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KODAK 8300 sensor