20 January 2021: Soon to be released APP 1.083-beta2 : improved comet registration, updated tools, new Star Reducer Tool and more...
16 November 2020 - Wouter van Reeven has officially joined the Astro Pixel Processor Team as a moderator on our forum, welcome Wouter 🙂 !
Help with horizontal banding
I'm hoping someone here can shed some light. I used APP to stack 30x300 sec light frames shot with an ASI294mm through an Ha filter and got noticeable horizontal banding. I've re-run the stacking multiple times and have the same result when I run with no calibration frames. Individual light frames look fine - I've gone through all 30 and can see no banding but when I integrate all 30 in APP, the banding is quite noticeable. For simplicity I've ran it with no change to default settings. Can anyone suggest what I might be doing wrong or if there is a setting I should be using?
never mind, think I figured it out. the horizontal banding was an artifact introduced by USB connection. Moved all files to local hard drive in laptop and re-stacked and the issue went away. Cheers!
Great and thanks for sharing that. It happens now and again indeed and has become the usual question to a user when it's super-weird looking or indeed seemingly random interference. 🙂