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From memory it was a single 1×1 Ha sub. My sn10 is 10" f4 and the paracorr increases the fl by 1.15 factor. The qsi683 has 5.4 micron pixels. I did use irfanview to reduce the image size to get under the 200k IIS posting limit. My platesolve shows the image scale as 0.97 arcseconds per pixel.
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