M 28 - Wide field
M 28 - Wide field |
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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: | Nikon AF-S Nikkor 500mm f/4E @ f/5 | |
| Camera: | Nikon D750 (ISO1600) | |
| Mount: | Astro-Physics AP1600GTO | |
| Exposure time: | 53x2min | |
| Exposure time total: | 1h 46min | |
| Notes: | Image acquisition by CEDIC
team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner) Image processing by Bernhard Hubl |
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