M 28
M 28 |
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Object data of M28 |
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| Object type: | Globular star cluster (IV) | |
| Size: | 11.2' | |
| Magnitude: | 7.7 mag | |
| Constellation: | Sgr | |
| Distance: | 18,000 Ly | |
| Notes: | At about 18,000 light years distance, Messier 28 with its linear diameter of 60 light years appears considerably smaller and more compressed than its more impressive neighbour M22. In 1986, M28 became the first globular cluster where a millisecond pulsar was discovered (by the Lovell Telescope at Jodrell Bank Observatory). | |
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Exposure data |
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| Date: | 2015-10-07 + 09 + 10 + 11 | |
| Location: | Hacienda Los Andes / Chile (1100m) | |
| Telescope: | TEC RC 20" f/9 with corrector (f=4492mm) | |
| Camera: | FLI PL16803 with Astrodon filters | |
| Binning: | L 1x1 RGB 1x1 | |
| Mount: | Astro-Physics AP1600GTO | |
| Exposure time: | L 36x2min / R 12x2min / G 12x2min / B 12x2min | |
| Exposure time total: | 2h 24min | |
| Notes: | Image acquisition by CEDIC
team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner) Image processing by Bernhard Hubl |
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