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May 2, 2020: Quick lunar image

michael.h.f.wilkinson
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michael.h.f.wilkinson

michael.h.f.wilkinson

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Got the APM 80 mm F/6 out, to take a quick shot of the moon. I inserted the Meade 2x TeleXtender to reach F/12 which is near optimal for the ASI183MC. Grabbed a few SER files of 2000 frames, but had difficulties with variations of sharpness across the field. I first blamed sag in the focuser, and tightened some grub screws to deal with it. After processing the lot, I now feel there might be some field curvature, as the centre seems sharper than the north and south parts.

Moon_211651_lapl4_ap722LR_2c_stitch.thumb.jpg.6c1dacf20eb9682bd98662c87a9bcef9.jpg

With saturation pushed a bit:

Moon_211651_lapl4_ap722LR_2c_stitch-sat1.thumb.jpg.0c318f185f39c49f0c6a0eeb95c75b33.jpg

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