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Subject
M1
Date
24th February 2004
Telescope or Lens
TEC APO 140
Mount
G11
Camera
SXV H9
Filters
True Tech RGB
Total Exposures L 60 min R 20 min G 20 min B 20 min
Sub exposure
6 x 10 min Red filter
2x 10 min
2x 10 min
2x 10 min
Binning
Luminance 1x1 RGB 1x1
Field of view and resolution
Approx 1.36 Arcsec / Pixel
Comments  
This was the first deep sky image with the TEC140 APO. The luminance was taken through the red filter. M1 was quite low to the West and almost below my local horizon at the end of the session, it had been in my light pollution dome for some time. No flat fields were taken as I ran out of time due to work the next day. The main aim was to check out the guiding on the new set up. I think the picture shows a reasonable result for the first attempt. By the time I have fine tuned the balance and settings I should see a further improvment. Guiding was through an 80mm Celestron f5 scope with the SXV guide camera and a 3x teleconverter to give a focal length of 1200mm. I used Astroart with gradient plug in, and Adobe Photoshop for the processing. No deconvolution has been used, just some DDP and light sharpening.