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Subject
NGC 6888, The Crescent Nebula
Date
21st August 2006
Telescope or Lens
Toscano 8 inch RC with AP 0.67 focal reducer
Mount
Paramount ME
Camera
ST2000XM
Filters
CS 10nm Ha, True Tech RGB, IR block
Total Exposures L Ha+R 140 min R 90 min G 45 min B 63 min
Sub exposure
7 x 20 min
9 x 10 min
9 x 5 min
9 x 7 min
Binning
1x1
Field of view and resolution
Approx 31 x 23 Arcminute. 1.18 Arcsec / Pixel
Comments  
This is the first image taken with the Toscano 8 inch RC using a focal reducer. The AP 0.67 reducer seems to work quite well with the scope and gave good star images to the corners of the ST2000Xm chip, and a flat field. Some data concerning the images, and the scope was determined using CCD Inspector and can be found by clicking here. This image has been processed with a bias towards showing the stars and the luminance is a combination of Ha and the Red channel. Another image that was processed with a bias towards showing Ha can be found by clicking here.