radarboy wrote:Hi Sam & Company;
I have noticed some simliar (but much less strong) pattern noise on my ASI1600mm-pro as well. (You can see it on the left side of the Iris nebula in the dark dust lane area.) I've included a screen shot showing the darks I used which also exhibit a strong vertical column banding. Is this normal for the 1600mm-pro or would it be a similar noise issue to the original poster? Or am I pushing the noise limits in my stretch?
Thanks,
Ryan
Please take a flat frame under following settings:
ADU=30000，gain=300, single frame, RAW16, *.fit.
put it on dropbox, send the link to support(at)zwoptical.com we will take a look.
