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Subject
M1
Date
23rd January 2005
Telescope or Lens
TEC APO 140
Mount
G11
Camera
ST2000XM
Filters
Schuler 10nm Ha, Custom Scientific 4nm SII and OIII
Total Exposures L   R 120 min G 120 min B 120 min
Sub Exposure
SII 6 x 20 min
Ha 6 x 20 min
OIII 6 x 20 min
Binning
1 x 1
Field of view and resolution
Approx 41x 31 Arcminute. 1.56 Arcsec / Pixel
Comments  
This false colour image of the crab nebula shows SII as red, Ha as green, and OIII as blue.