NGC7000 - The North America Nebula (Narrowband)

20:49 7/8/2007 UTC

Nights are starting to get dark here and I started my imaging season with an experimental imaging on North America Nebula. Short night doesn't allow long enough exposures yet, but at least I could check all my routines and at the same time test my new SII filter. This image is composed using Hubble Palette, where red corresponds to SII emission, green to H-alfa and blue to OIII.

Camera: Modified Canon EOS 350D | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Orion Skyview Pro, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Astronomik H-alpha 13nm 2", Astronomik OIII 13nm 2", Astronomik SII 13nm 2" | Guiding: , Orion ShortTube 80mm f5 refractor, QCGuider, Teleskop-Service 1.5x Barlow, Phillips ToUCam Pro II webcam | Exposure: 6x300s (30m) ISO800 f6 (Ha), 6x300s (30m) ISO800 f6 (OIII), 6x300s (30m) ISO800 f6 (SII) 3 darks, 11 flats. SII:Ha:OIII Mapping (HST palette) | Software: IRIS, GIMP | Location: 60°31'N 26°52'E (Koivula/Kotka,FI)