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Subject
M51
Date
8th April 2004
Telescope or Lens
TEC APO 140
Mount
G11
Camera
ST2000XM
Filters
TT CFW. TT LRGB Hutech LPR
Total Exposures L 80 min R 60 min G 40 min B 40 min
Sub exposure
8 x 10 min
6 x 10 min
4 x 10 min
4 x 10 min
Binning
Luminance 1x1 RGB 2x2
Field of view and resolution
Approx 35 x 26 Arcminute cropped. 1.56 Arcsec / Pixel
Comments  
This is the first serious image with the TEC140 and ST2000XM. I am quite pleased with this shot. Several things came together to give a good result. The seeing was very good for the UK. The self guiding on the ST2000XM controls my G11 very well, the best setup so far (even without the good seeing), and the Hutech LPR filter is a really good piece of kit, probably rates as one of my best buys to date. The contrast was very good on the raw images and I cannot see any gradients. That is not to say there aren't any but I am not very good at seeing them. If you spot them let me know please. The image has been cropped from the full size field of 41 x 31 arc minutes, to decrease file size and because of un-aligned areas between the individual images. Processing was carried out with MaximDL, Astroart and Photoshop. Images acquired using Maxim CCD, very good to use. Two other galaxies are also just visible. IC 4278 and IC 4277