M82 Cigar Galaxy

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2015/03/12 - Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is a starburst galaxy about 12 million light-years away in the constellation Ursa Major. It is about five times more luminous than the whole Milky Way and one hundred times more luminous than our galaxy's center. The starburst activity is thought to be triggered by interaction with neighboring galaxy M81, and M82 is a member of the M81 Group. As the closest starburst galaxy to our own, M82 is the prototypical example of this type of galaxy. SN 2014J, a Type Ia supernova, was observed in the galaxy on 21 January 2014. In 2014, in studying M82, scientists discovered the brightest pulsar yet known, designated M82 X-2.


Object information
Name : M82 Cigar Galaxy
Type : Galaxy
Constellation : Ursa Major
Distance : 11.400K light-year
Apparent dimensions : 11'.2 x 4'.3
Apparent magnitude : 8.41

Image information
Image date : 2015/03/12, 2015/02/11
Right ascension : 9:55:53.332
Declination : 69°40' 43.97"
Focal length : 1686.18 mm
Focal ratio : f/6.64
Image resolution : 0.661 arcsec/pixel
Field of view : 35' 59.4" x 27' 0.4"
Sky quality : 21.80 mag/arcsecond2
Sensor temperature : -25°C
Light frames : 55 hours, 30 minutes total exposure time
24x 1800 sec. luminance unbinned
12x 1800 sec. red unbinned
16x 1800 sec. green unbinned
13x 1800 sec. blue unbinned
46x 1800 sec. hydrogen-α unbinned
Image acquisition with ACP Scheduler and Maxim DL
Auto-guiding with Maxim DL
Auto-focusing with FocusMax
Bias frames : 100x unbinned
Dark frames : None
Flat frames : 30x luminance unbinned
30x RGB unbinned
30x hydrogen-α unbinned
Automated sky twilight flats with ACP Scheduler
Processing : PixInsight for calibration, alignment and integration.
Adobe Photoshop CS6 for final touch.

Equipment information
Telescope : Orion Optics 10" ODK
Corrector : None
Focuser : Baader SteelTrack with SteelDrive
Mount : Mesu Mount 200 with Sidereal Technology SiTech Controller
Camera : QSI 683wsg-8 cooled CCD camera with Kodak KAF-8300 sensor and Off Axis Guide (OAG) port
Guidecamera : Starlight Xpress Lodestar autoguider
Filters : Astrodon Tru-Balance E-Series LRGB & Astrodon 3nm H-α, 3nm O-III, 3nm S-II and 3nm N-II
Observatory site : www.sunstarfrance.com, Hautes-Alpes, France