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Lunar image based on 30 x 1/200 secs.  D5000 Nikon DSLR with 2" adaptor, Skywatcher Neodymium Light Pollution filter and C8-N. 

Stacked with Python's openCV ECC alignment and a home-grown Python program.

There was quite a lot of sensor noise in the original photos at high magnification which has totally disappeared after stacking, however all the craters have a slight echo, which is also in the original photos (all 30 of them), so what caused this?  Is there maybe a wobble from the mirror opening and closing?  I'll check the tightness of all the camera attachments very carefully next time and make sure the focus is fully locked down.

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  • 14 images
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