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Messier 28 - Wide field in Sagittarius

Astrophotography from Ursa Major Observatory @ ROSA

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deeplook.at
deeplook.at
2015-10-07+09+10+11
Hacienda los Andes / Chile (1100m)
Nikon AF-S Nikkor 500mm f/4E @ f/5
Astro Physics AP1600GTO
53x2 min
1h 46min
Camera:
Nikon D750 (ISO 800)
Image acquisition by CEDIC team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner) Image processing by Bernhard Hubl
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Globular star cluster (IV)
11.2’
+ 7.7 mag
Sgr
18 000 Ly
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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