NGC 281 is an emission nebula in Cassiopeia. It is also called "PacMan Nebula". It includes open cluster IC 1590, the double star HD 5005, and several Bok globules.
Bok globules are isolated and relatively small dark nebulae, containing dense cosmic dust and gas from which star formation may take place. Bok globules are found within HII regions, and typically have a mass of about 2 to 50 solar masses contained within a region about a light year. [Wiki]
Image processed using the Tone Mapping workflow using SII, Ha and OIII images.
Here the more classic RGB rendition using only OIII and Ha filters.
Ha image provided by Davide Coverta |
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| Optic |
SW Quattro 8S 200mm f/4 with Baader MPCC Mark III corrector |
| Camera |
Atik 383L+ |
| Filters |
Baader Ha, SII, OIII 36mm |
| Mount |
NEQ6 with EQASCOM
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Guide
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SW 70/500 with AlCCD5
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Frame center
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RA 00:52:59 DEC 56:37:11 J2000
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Date
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October 2016, September 2014
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Site
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S.Barthelemy, AO, Italy
Backyard, Milan, Italy
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| Exposures
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SII 12x900s bin 1x1 @-10°C
Ha 20x900s bin 1x1 @-20°C
OIII 30x600s bin 1x1 @-10°C
Integration time - 13h
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