Click on image for large version
Subject
IC 434 and B33
Date
November 2003 through March 2004
Telescope or Lens
Vixen ED102SS
Mount
G11
Camera
SXV H9
Filters
TT RGB and Schuler 10nm Ha
Total Exposures L 6 hours R 2 hours G 2 hours B 2 hours
Sub exposure
4 frames each 3 x 30 min
4 frames each 15 x 2 min
4 frames each 15 x 2 min
4 frames each 15 x 2 min
Binning
Luminance 1x1 RGB 2x2
Field of view and resolution
Approx 83 x 60 Arcminute. 2 Arcsec / Pixel
Comments  
This 4 frame mosaic of the Horsehead (B33), Flame nebula and IC434 was almost lost. I started the image in November and due to very few clear moonless nights I almost ran out of time to take the colour data. The final frames were contaminated to some degree by light pollution which was very difficult to correct. The image is not quite as good as I had hoped but I think a reasonable effort. All data was taken from my back garden. Total exposure time was 12 hours with 6 hours of Ha for luminance.