CG 4
CG 4 |
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Object data of CG4 |
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| Object type: | Cometary globule | |
| Size: | 22' x 7' | |
| Magnitude: | - | |
| Constellation: | Pup | |
| Distance: | 1,300 Ly | |
| Notes: |
CG 4 is a cometary globule in constellation Puppis. Cometary globules are
typically characterized by dusty heads and elongated tails. These features
cause cometary globules to have visual similarities to comets, but in
reality they are very much different. Globules are frequently the
birthplaces of stars, and many show very young stars in their heads.
CG4 is about 1,300 light years from Earth. Its head is some 1.5 light-years in diameter, and its tail is about 8 light-years long. The dusty cloud contains enough material to make several Sun-sized stars. CG 4 seems about to devour the edge-on spiral galaxy ESO 257-19. In reality, this galaxy is more than a hundred million light-years further away, far beyond CG4. |
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Exposure data |
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| Date: | 2014-02-24 until 2014-02-28 | |
| Location: | Hacienda Los Andes / Chile (1100m) | |
| Telescope: | Astro-Physics 175mm f/8 Starfire EDF with f/8.3 CCD field flattener | |
| Camera: | FLI PL29050 with Astrodon filters | |
| Binning: | L 1x1 / RGB 1x1 | |
| Mount: | Astro-Physics AP1200GTO | |
| Exposure time: | L 26x8min / R 6x8min / G 6x8min / B 6x8min | |
| Exposure time total: | 5h52min | |
| Notes: | Image acquisition by CEDIC
team (Christoph Kaltseis, Bernhard Hubl, Wolfgang Leitner and Herbert
Walter) Image processing by Christoph Kaltseis |
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