Calibration Issues

@endeavor384 Can you enable 32 bit masters at the bottom of tab 2 and see if that helps?

@wvreeven I can give that a try. Will report back.

@wvreeven no luck, same result

@endeavor384 OK. What other calibration files are you using?

@wvreeven   Ive got 20 flats, 20 dark flats, and 10 darks  in this particular case.

@endeavor384 Would you mind uploading all files to

https://upload.astropixelprocessor.com

using for both username and password: upload

Create a folder called endeavor384_flats and put them in there. Then I will have a look at your data tomorrow. Thanks!

@wvreeven will do. Just started uploading now.

@wvreeven do you want a few light frames and dark frames too? or just flats?

@endeavor384 A few of all kinds of calibration files that you have please. 

@wvreeven all done uploading. Let me know if you want lights later on. Just to ensure clarity, I added the MDF, MF and MD frames APP generated. The issue doesn't seem to be with the generation of the files as they look the same in Pixinsight. The difference is the actual subtraction of dust/artifacts from the lights with those MDF/MF/MD frames.

@endeavor384 Please upload lights as well. Sorry for not making that clear.

@wvreeven How many do you think would be sufficient for your test?

@endeavor384 I think 5 would suffice.

@wvreeven sounds good- uploaded

@endeavor384 Many thanks. I'll have a look tomorrow since it is getting late in my time zone.

Just if I'm missing something, but can you also provide a PI calibrated light? Just for us to compare?

@vincent-mod I am uploading the flat, light, bias, dark masters in case you want them all from Pixinsight. the master flat finished, and the light is currently uploading but showing nearly 40 more minutes to upload from right now.

Ok, thanks Mark! Always good to have a very good picture overall. Will continue investigating tomorrow.

@vincent-mod Absolutely. Always a pleasure working with you guys but I now have 4 data sets where the flats aren't working in APP, this is just one example. They've all successfully worked for me in pix but I very much prefer using your guys software as I have since I started this hobby early last  year.

Looking at the data. The flats and MF you uploaded, as well as the lights, I can't see dust spots in actually. 🙂 Also, for some reason I'm trying to see, the flats won't assign to the lights. You should see that Masterflat (MF) is added to the light frames (in the table) if the flat is actually used. Is that working ok for you?

@vincent-mod I just uploaded a word document that shows you what I see. From my side, it's quite noticeable.

Thanks, I'll have a look. But can you check if you see the MF assigned to the lights in APP?

@vincent-mod can I do that after the fact? Or would I need to do another session to stack them again?

You can see this by loading a few lights, add the masterflat, masterbias and masterdark and then select "l-calibrated" on top of the APP preview window. APP will then calibrate the light that you select to view. It then should assign MB, MD and MF to the file you clicked on.

Small edit: I now see the dust also clearly, I had to neutralize the background. 🙂 But still I can't see the flat being assigned to the light. That would explain why it doesn't calibrate, but I'm hearing Wouter does have that working. Something weird is going on somewhere in the data. We investigate further. 🙂

@vincent-mod I did the step and now says, for one line example, in the frame column:

Light 1  L-Pro Session 1      MD-1 all channels  session 1      BPM-1    CA

Ok, got the assignment working now as well, might have mixed up a label somewhere. Please check if you see the MF-1 mentioned in your table, who knows you made a similar mistake.

So, looking at it now, it does get assigned, seems to correct the light vignetting properly. The signal from just the few lights is not enough to really see a nice nebula, but this is what I got with over stretching:

 I now can't see the dust to be honest.

@vincent-mod I believe I attached the light frame that was generated from APP that had all the dust on it too. And I'm using the same process I've used for...  at least a year if not longer now but the last 4 targets I've shot I can't get the dust out from APP.

@endeavor384 Right, excellent, that means you had the same issue I stumbled upon. Your flats are not being used to actually correct anything. Not sure why though, but I now loaded the lights and assigned L-pro as my label to all of them. I did the same with the flats, assigned them to L-pro as well, flat-darks same and the darks to everything. That suddenly worked. Can you try that? Use raw calibration data, not the masters.