Antilhue - Chile
Antilhue - Chile
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| Designation | M 99, NGC 4254 |
| Object type | Sc type spiral galaxy |
| Coordinates | 12h19m, + 14°25' |
| Constellation | Coma Berenices (Com) |
| Description | M99, although situated in constellation Coma Berenices, is one of the bright spiral members of the Virgo Cluster of galaxies. It rotates clockwise (unlike the nearby spiral M100) and is unusually asymmetric. At 60 million light years, it is moving through the Virgo Cluster with a high proper (or peculiar) velocity of at least about 1200 km/sec, in a direction pointing away from us. M99 was the second nebula, or galaxy, to be recognized as a spiral, by Lord Rosse in spring 1846, about one year after his first discovery of a spiral, M51, in spring 1845. |
| Exposure | LRGB 105:40:40:40 min @ -15°C, RGB binned 2x2 |
| Camera | SBIG ST-10XE selfguided, CFW-8, Astrodon Tru-Balance LRGB Filterset |
| Optics | RCOS 14.5" Ritchey-Chrétien @ f/9 |
| Mount | Astro-Physics AP1200GTO |
| Software | MaxIm DL/CCD, Sigma Pre Beta 11, Registar, Adobe Photoshop CS |
| Location - Date - Time | San Esteban (Chile) - 18Mar2004 - 06:00 UTC |
| Conditions | Transparency 6, Seeing 4-5, Temperature +14°C |
