spanishflyer

Hi to all, Hope everything is fine in your place, considerign the actual situation.. I'm a newby taking pictures at the night sky and started with the easiest, which is taking photos of the moon. I have a Sony A7R3 and an A9, but for the sky pictures I prefer the A7R3 for the higher megapixel and better cropping possibilities. The problem I find with the R3 and the 200-600 @ 600mm is that I get this weird pattern when I enlarge the image, even before doing any processing. I don't know if it is the camera sensor , the lens or the atmosphere between me and the moon, but need to know what it is and if there is a way to cancel or at least reduce that ugly effect. In this case I'm shooting at 100 ISO and shutter speeds between 1/80 and 1/250. The f stop is between f/8 and f/16 I have tried both with autofocus and manual with the same results. I have also tried taking as much as 50 exposures one after the other, then using PIPP and AutoStakker, and finally doing some adjustments in Photoshop, and of course the end image is near amazing, but one way or the other, I cannot get rid of the weird pattern (it is actually increased if anything). I include one shot I took yesterday, without any processing; then maybe some kind soul can guide me on how to improve my night photography ; )