M 91

Messier 91 (also known as NGC 4548) is a barred spiral galaxy the constellation Coma Berenices and is part of the Virgo Cluster of galaxies. It is about 63 million light-years away from the Earth.


Technical Details:

Optics: ASA N 12 Astrograph at /6.8
Mount: ASA DDM 85
Camera: SBIG STL-11000M
Filters: Astronomik LRGB filter set
Dates/Times: 23 April 2012
Location: Rozhen
Exposure Details: L = 30 min, R,G,B = 30 min. each
Subexposures: 10 minutes
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS

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