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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.
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Technical Details: |
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| 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 |