Antilhue - Chile
Antilhue - Chile
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| Designation | CG 4 and PGC 21338 (ESO 257-19) |
| Object type | Cometary globule |
| Coordinates | 07h35min -46°56' |
| Constellation | Puppis (Pup) |
| Description | Cometary
globules are isolated, relatively small clouds of gas and dust within the
Milky Way. This example is very, very dim and about 1300 light years
distant. The 'head', which is some 1.5 light years in diameter, seems
about to devour the edge-on spiral galaxy PGC 21338 (mag 14.4), which in
reality is hundreds of millions of light years away, far beyond CG
4.
There is also an earlier grayscale image with a 155mm refractor |
| Exposure | LRGB 180:45:45:90 min @ -13°C, RGB binned 2x2 |
| Camera | SBIG ST-10XE selfguided + SBIG CFW-8 with Astronomik Type II RGB filterset |
| Optics | RCOS 14.5" Ritchey-Chrétien with AP 0.67X reducer working at f/6.56 |
| Mount | Astro-Physics AP1200GTO |
| Software | MaxIm DL/CCD, DeBloomer, Registar, Sigma Pre Beta 11, Adobe Photoshop CS |
| Location - Date - Time | San Esteban (Chile) - 19/20Feb2004 - 03:00 UTC |
| Conditions | Transparency 7, Seeing 7, Temperature +15°C |
