M 75

Messier 75 (also known as NGC 6864) is a globular cluster in the constellation Sagittarius. M75 is at a distance of about 67,500 light years away from Earth and its diameter is about 120 light years.It is one of the more densely concentrated known globular clusters.


Technical Details:

Optics: ASA N 12 Astrograph at /3.6
Mount: ASA DDM 85
Camera: SBIG STL-11000M
Filters: Astronomik RGB filter set
Dates/Times: 16 July 2012
Location: Rozhen
Exposure Details: R,G,B = 10 min. each
Subexposures: 2 minutes
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS

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