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M81 and M82 (UMa)
Click on the image for a larger version
| Date/Site: |
21., 22. and 25. April, 22. and 25. Mai, 3., 5. and 6. Juni 2024. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
RGB: 154 x 300 seconds (-10°C),
L: 23 x 300 seconds
Hα: 54 x 600 seconds (-20°C) |
Camera/
Optics/
Instrument: |
Touptek 294CP on 150mm f/5 Newton with 2" Skywatcher Comacorrector,
Moravian G3-16200 with Astronomik Type II-filter on 250mm f/4,7 Newton with VIP-3010 Paracorr on 10Micron GM1000 HPS |
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Data acquired remotely using N.I.N.A.,
Guiding: ASI120 attached to a 61mm-finder,
Focusing with Microtouch,
Calibration with MaximDL 6, processing in PixInsight 1.8,
Hα-Kontinuum-Subtraktion, Hα-Integration with Affinity Photo |
After many unsatisfactory attempts to image and to process the data to achieve a presentable image of these two galaxies almost 24 hours of exposure time was needed to produce this result.
But the Hα-filaments of M82 could still have been a bit more prominent.
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© Friedhelm Hübner, last revision: 09.12.2024