AMATEUR ASTRONOMY SITE
Javier Gómez Laina                                                                                    M51  in  Canes Venatici



Object  M51         -  face-on spiral galaxy  -
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
204'  unfiltered  (204 x 60") 31'  (31x60") 37'  (37x60") 61'  (61x60")
Date
14 & 27 May 2005
8 May 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.  Jerry Lodriguss' Layer Mask method for avoiding sobre-exposure on galaxy core.
L (50% opacity) and RGB layers,  gaussian blur and color saturation.
PixInsight: Gradient removal.

Final image:  LLRGB layers.