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MasterFlatOIII flipped CCD


MasterFlatOIII flipped CCD

CCD Inspector analysis of the OIII MasterFlat frame after flipping the entire filter wheel assembly to reverse the orientation of the filters relative to the OTA vs. camera. The interference/diffration/reflection issue has improved significantly with a substantial reduction in variation in intensity. There is still some residual vignetting and the concentric ring pattern seen in the stretched flat.






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