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NGC 2237, NGC 2238, NGC 2239, NGC 2246 (Rosette Nebula) and NGC 2244
The Rosette Nebula (also known as Caldwell 49) is a large circular H II region located near the end of the giant Monoceros' molecular cloud. The young open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster are formed from the nebula's matter.
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Object Details: |
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| Objects: | NGC 2237, NGC 2238, NGC 2239, NGC 2244, NGC 2246 |
| Constellation: | Monoceros |
| Center of field: | R.A. 06h, 32m, 02 s. ; DE. + 4°, 57', 10" |
| Field dimensions: | Apr. 70 x 110 ' |
Technical Details: |
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| Optics: | 12" ASA Astrograph at F/3.6 |
| Mount: | ASA DDM 85 |
| Camera: | SBIG STL-11000M |
| Filters: | Baader 8nm narrowband filters, Astronomik LRGB set |
| Dates/Times: | October 2010, January 2011 |
| Location: | Home Observatory Varna, Avren |
| Exposure Details: | Ha = 180 min., S II = 180 min., OIII = 180 min., R,G,B = 60 min. each |
| Subexposures: | Narrowband = 30 minutes, RGB = 5 minutes |
| Acquisition: | CCD Soft |
| Processing: | PixInsight, Photoshop CS |