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B33: The Horsehead Nebula
RA:05 40 55, Dec:-02 28 00, mag: -.-, Size:6'x4', Dist: 1 600 l.y.
Close-up shot:
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Wide-field shot:
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| Object: | The Horsehead Nebula, in the winter constellation of Orion, is probably the most well known dark nebula. It is an enormous opaque molecular cloud of dust and obscures some of the bright red emission nebula, IC 434, behind it. The lower image shows that the horsehead is the upper extension of a much larger cloud. The scrolls and curves of the head are tangled in a complex manner because of their turbulent motions. Due to the action of the stellar winds and ionized gases, the horsehead is gradually being eroded away. | |
| Exposure: | L: 27x300s, R: 22x300s, G: 20x300s, B: 20x300s | |
| Equipment: | Vixen VMC260 f/11.5, AP 0.67x reducer. SBIG ST10 CCD [L:1x1, RGB:2x2]. Astronomik LRGB filters. Wide-field shot, co-aligned WO FLT98C, 0.8 reducer, Canon 40D (filter modded). | |
| Location: | 21st, 23rd, 26th, 28th Dec 2009 & 4th, 5th Jan. 2010 00:30 UT, Oxford UK. | |
| Processing: | Images combined in MaxmimDL, curves & levels in PhotoshopCS. | |