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Subject
M42
Date
14th February 2005
Telescope or Lens
TEC APO 140 with AP 0.75 focal reducer
Mount
G11
Camera
ST2000XM
Filters
Schuler 10nm Ha, Custom Scientific 4nm SII and OIII.
Total Exposures L 60 min R 75 min G 60 min B 60 min
Sub exposure
from Ha data
15 x 5 min
30 x 2 min
20 x 3 min
Binning
1x1
Field of view and resolution
Approx 58 x 43 Arcminute. 2.18 Arcsec / Pixel
Comments  
This narrow band filtered image of the Orion Nebula, M42 shows SII as RED, Ha as GREEN and OIII as BLUE. The Ha data was also used as luminance. The image was assembled from data gathered over several nights finishing on the 14th February 2005.