IC 4996
Telescope:Vixen VC200L, focal reducer f/6.4, Sphinx SXD
Camera:Canon EOS 40D, 800 ASA
Exposure:75 x 30s
Calibration:Dark (100 images), sky flatfield (100 images, low pass filter)
Image Processing:Shift & add with correction of subpixel movement, improved noise reduction
Date of exposure:23 July 2008
Software:ArgusPro SE
Image of the Month

Interstellar Gas in Cygnus