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Maybe one more chance: if you did'nt crop already, check if croping some 10-20pixels at the borders would help. this purple "glow" only seems very odd. maybe a combination of filter use and stacking artefacts let Wipe kick back on the corners for the red channel only. If you do apply flats and still...

this is a hard one no doubt but don't give up that easily :-) 1) You did not mention you created DarkFlats or Bias frames this is very important because otherwise you`ll introduce noise into the stack: The darks are correcting the lights for noise floor, but the bias noise of the Flats also need to ...

1) BTW Which stacker do you use?
2) This flatframe seems ok to me.... You'll now need to create a Masterflat.
3) The Masterflat is created using a number of these flats plus either Bias frames or Darkflats
4) You should use at least 20 to 30 frames of each type.

Does that help?
jochen

Hi Arrowspace90, interesting discussion... Yes you definately need flats for better Wipe output. However, though flats removed the vignetting in my shots, I still had to struggle with similar noise in the background when starting off. I use an unmodified and uncooled camera. And with light pollution...

Hi,
so again another graphic card, new issues...., I just downloaded 1.7.402 from homepage and retried....
I can confirm it works for my configuration now (AMD R9 M390) - no crash any more .
good luck fixing this!
jochen

It appears You have AutoDev run on the whole image like in the initial stretch. For the final stretch You will need to give AutoDev a bit more guidance. 1) Mask out any dark anomalies (dust specks, trees, mountains etc) 2) Try selecting a Region of Interest (ROI) first - using click&drag on your obj...

Hi Skygaze, you might want to check out the Inofficial Manual available on the download page. It contains both the Official content on the homepage, Guy's User Notes and some more articles I digged out I just updated it to V1.6. It's an old fashioned PDF, but it provides all information on in one pl...

Thanks Ivo,
this works fine now!

Hi Ivo, I am using the right-click / show package method to launch StarTools (worked fine before) Upon double click on StarTools Program Icon, it starts the Terminal which provides following error: 2020-02-24 19:51:46.278 StarTools[2927:79904] Unable to find class: HOSTApplication, exiting this did ...

Hi Ivo, how about putting the Decon workflow change explanation in a dedicated threat to alert more users? I stumbled over this by accident as a side not of a different topic. Actually I feel this new workflow makes much more sense as the Stretching adjustments are now completed on all scales first ...