I'm following up on this in the hopes someone will have some ideas. Being as last night was my first night using the new camera and filter wheel, I expected to encounter issues. As shown in my original post with the screen grab of NINA, it looks like the filter isn't properly centered. This morning, I started processing my data to see if things would calibrate out. They did not. A lot of screenshots are forthcoming
First, here's a raw Luminance filter light sub opened and auto-stretched in PI:
You'll notice that the top and bottom right look to be cut off. My guess is it's the threaded edge of the filter mounting. Next up is a Luminance filter flat auto-stretched:
The "cutoff" is a bit less pronounced, but I attribute it to the flat image being considerably shorter than the 90s light. The flat is 0.13" with a median 32844 ADU. Here's the contour graph for that flat:
That looks pretty normal to me, but I welcome feedback. Next up is the matched dark flat:
Nothing spectacular there. Now, let's move on to a 90" dark auto-stretched:
Interesting that the starburst/supernova (purposefully NOT calling it amp glow) pattern is so prominent here, whereas it's not even visible in the 90" light. Next, here's the result of running the WBPP script on the entire set of Luminance data (lights, darks, flats, dark flats):
Ummmm... what? OK, I can kind of understand the top and bottom right not calibrating out. After all, that doesn't really appear to be vignetting and falloff - which was the reason I opened this topic. However, what is the rest of this? Where did that strange pattern come from? Finally, here's what I get if I generate a new image from running the pixel math expression (Light - Dark) / (Flat - DarkFlat):
I can see the issue in the top right and bottom right, and it looks like the weird gradient pattern. I would expect that to be more pronounced after registration and integration. However, I still cannot wrap my brain around the result I actually got.
I have made each of the RAW files shown in the screenshots above available in my Google drive.
I appreciate any and all feedback. Thanks in advance!