M 100, NGC 4323 and NGC 4328


Messier 100 (also catalogued as NGC 4321) is a spiral galaxy in the constellation Coma Berenices. One of the brightest galaxies in the Virgo cluster, M 100 is approximately 55 million light-years from Earth and has a diameter of about 160,000 light years. Discovered by Pierre Méchain in 1781 and subsequently entered in Messier's catalogue of nebulae and star clusters. A satellite galaxy NGC 4323 is present below the main galaxy and the elliptical galaxy NGC 4328 could be seen at the righ.


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: 22 April 2012
Location: Rozhen
Exposure Details: L = 60 min, R = 30 min; G = 30 min; B = 30 min.
Subexposures: 10 minutes
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS

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