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Rosette Nebula |
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Click here to enlarge photograph.
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DESCRIPTION Would the Rosette Nebula by any other name look as sweet? The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of the this flowery emission nebula. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's center, insulated by a layer of dust and hot gas. Ultraviolet light from the hot cluster stars causes the surrounding nebula to glow. The Rosette Nebula spans about 100 light-years across, lies about 5000 light-years away, and can be seen with a small telescope towards the constellation of Monoceros. Constellation: Monoceros - Distance: 5,500 Light Years RA: 06h 32m 37s - DEC: +04d 51m 50s - Magnitude: 4.8 - Apparent Size: 80' x 60' |
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| Date Taken: 02.08.2004 Telescope: Takahashi FSQ-106N Focuser: Finger Lakes DF-2 Camera: SBIG ST2000XM / CFW-8A Mount: Astro Physics AP900GTO Guider: Borg 76ED F6.6 and STV Deluxe Filter: Custom Scientific Ha (4.5nm AR), SII (4.5nm AR), OIII (4.5nm AR). |
Ha: 8 x 900 sec 1x1 SII: 8 x 900 sec 1x1 OIII: 8 x 900 sec 1x1 Integrations Dark and Flat frame subtracted. Combined using Russel Croman's Sigma Combine Plug-in for Maxim/DL. Ha (Green), SII (Red), OIII (Blue) combined in Photoshop CS. Histogram manipulation and noise reduction using Grain Surgery Pro. Very slight unsharp mask applied to finish things off. |
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