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Subject
M13
Date
7th May 2005
Telescope or Lens
TEC APO 140
Mount
Paramount ME
Camera
ST2000XM
Filters
True Tech LRGB and Hutech LPR
Total Exposures L 60 min R 30 min G 21 min B 21 min
Sub exposure
30 x 2 min
10 x 3 min
7 x 3 min
7 x 3 min
Binning
Luminance 1x1 RGB 1x1
Field of view and resolution
Approx 35x 28 Arcminute. 1.56 Arcsec / Pixel
Comments  
This is my best attempt at M13 so far. It was also the first taken with the Paramount ME and all data was acquired using unguided sub-exposures. I had previously set the polar alignment with T point and corrected the PEC with PEMPRO, a very easy tool to use. I got the PE down to -0.3 / +0.5 of an arcsecond without really trying. I guess I could do better with a bit of refinement but this is well within the pixel scale of my setup at the moment. A small amoutn of DDP was applied to the RGB and Lum images to help with the large differences in brightness.