AMATEUR ASTRONOMY SITE
Javier Gómez Laina                                                                      M97 - Owl nebula in Ursa Maior


Object  M97         -  planetary nebula  -
Telescope Celestron C-8 203mm  f6.3     TeleVue 76 guide telescope & QuickCam.
CCD  Starlight MX716 CCD camera. Astronomik RGB filters.
Exposures
L
R
G
B
138'    (138 x 60")  25'  (25x60")
30'  (30x60")
50'  (50x60")
Date
5 May 2005
26 Apr 2005
Processing Flats, Darks & Bias calibration and aligning  in AIPWin. 
Combining in Ray Gralak's Sigma-Clip. 
Deconvolution in AstroArt with Robert Vanderbei's  plug-in. 
RGB combine in Maxim DL.
PhotoShop: Curves Adjusts.
L (50% opacity) and RGB layers,  gaussian blur and color saturation.
Final image:  LLRGB layers.