Derby and District Astronomical Society
Caldwell 33 (NGC 6992/NGC 6995)
The Eastern Veil Nebula
RA 20h 56m 24s Dec +31d 43m 00s
NGC 6979
The Central Veil Nebula
RA 20h 51m 00s Dec +32d 09m 00s
Caldwell 34 (NGC 6960)
The Western Veil Nebula
RA 20h 45m 42s Dec +30d 43m 00s
Supernova Remnants in Cygnus
| This image of the Western Veil Nebula (Caldwell 34/NGC 6960) was taken by Adrian Brown during the summer of 2007. It is a false colour image, created from four 30 minute exposures via a 6nm hydrogen-alpha filter and one 30 minute exposure via a 13nm Oxygen-III filter. The hydrogen-alpha image is assigned to the red channel and the oxygen III image is assigned to the blue channel. A synthetic green channel was created in Photoshop using the Astronomy Tools plug-in. An ATK16HR CCD camera and Skywatcher 80EDPro refractor were used to capture the exposures. The bright star at the centre of the image is 52 Cygni. |
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| Adrian Brown took the following image of the Veil Nebula in Cygnus on the night of the 3rd-4th September 2005. The imaging equipment was a Canon 300D DSLR camera with a 200mm focal length lens and a Hutech LPS light pollution filter, piggy-backed on top of a Celestron C11 SCT which was used to autoguide the mount. The raw exposures were taken at ISO 400 to help suppress the buildup of noise. The image is a composite of six 9 minute exposures. The images were stacked and dark frame calibrated with Maxim DL 4.11 and then further processing was done in Adobe Photoshop via the Curves and Levels tools. Adrian also used a Photoshop plugin called GradientXTerminator to fix light pollution gradients in the picture's backgrounds. The leftmost (eastern) filament of nebulosity is Caldwell 33 (NGC 6992/NGC 6995), the central patch is NGC 6979, while the rightmost (western) filament is Caldwell 34 (NGC 6960). The bright star superimposed on the Western Veil is 52 Cygni. |
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| Adrian Brown produced the following image of the eastern section of the Veil Nebula (Caldwell 33 - NGC 6992/NGC 6995) in Cygnus in July 2005. He used a Skywatcher EvoStar 80ED refractor with an ATK-2HS camera, and an Orion SkyGlow light pollution filter. The image is a stacked composite of six, ten minute exposures. |
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