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Location/ Date: |
Eggersdorf, GER / 09.+10.+11.+12. May 2016 |
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Telescope/ Lens: |
10" TS ONTC Newton |
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Mount: |
Celestron CGE |
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Camera: |
Atik 383L+ |
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Exposure time: |
17x 600" Astronomik CLS 17x 600" Astronomik RGB each 16x 900" Astronomik Ha 6 nm |
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Total exposure: |
15,3 hours |
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Description: |
The two Bode galaxies M81 and M82 together with the stars Dubhe and h UMa are forming a triangle in the constellation of Ursa Major.
M82 is one of the most active known galaxies of type SBc (late barred galaxy) right now it is defined to be a starburst galaxy
(I0;Sbrst HII). The noticable chaotic form was caused by a fatal approach to M81 about 200 to 500 million years ago. The strong gravity of M81 which ten times as high as M82 changed the morphological structure in a way that intensive star forming processes (starbursts) had been initiated. Many mass rich stars had formed after the approach which ended as supernovae ejecting jets of material in an angle vertical to the level of M82 due to the enormous gravity of M81. Subsequently hydrogen fell back to the galaxy and got ionized by the young and hot stars. This process can be noticed as shiny red clouds of hydrogen emerging vertically from both sides of the galaxy. These clouds stick out almost 34,000 light years whereas the length of the part of M82 pointing towards us extends about 40,000 light years assuming an estimated distance of 12 million light years.
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Image recording: |
Frank Iwaszkiewicz |
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Image processing: |
Nico Geisler; Frank Iwaszkiewicz |
Object- Identification