DWB111 - The Propeller Nebula

19:52 29/8/2008 UTC

I found this interesting object, which is known as DWB111. Not so widely known DWB catalog lists HII emissions in Cygnus X region. The objects in this catalog is nice targets for H-alfa imaging like this Propeller Nebula. The nebula is very symmetrical and resembles a propeller well. This image is cropped a bit, because of very bright amp glow in lower right corner of the original. This is a bit challenging object for DSLR, but should be very nice target for cooled CCD's.
07.03.2009: While learning new tools and techniques I reprocessed this image using CCDStack, Nebulosity2 and Photoshop CS4 according to Zone System by Ron Wodaski. I left the original image for reference

[High Resolution]

Camera: Modified Canon EOS 350D | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Vixen GP-D2, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Astronomik H-alpha 13nm 2", Astronomik EOS L UV/IR Insert Filter | Guiding: , The Imaging Source DMK 21AU04.AS CCD camera, Orion ShortTube 80mm f5 refractor, Stark-Labs PHD Guiding | Exposure: 19x600s (3h10m) ISO800 f6, 16 darks, 15 flats, 0 bias | Software: Stark-Labs Nebulosity 2, CCDWare CCDStack, Adobe Photoshop CS4 | Location: 60°31'N 26°52'E (Koivula/Kotka,FI)