UPDATE FROM MABULA
I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred  after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.
Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.
APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46. Â Before I release it, I will make sure that everything is working properly and then I will release it.
After stacking the images in APP final stacked file doesn't have the blue channel when i stretch the image. the whole image have a green/yellow overcast. when i load the lights in the APP the channels are out of balance.Â
ive attached some fits file with flats, Dark flats and Master dark.Â
if anyone can have a go at it and can help me out with it. I'll really appreciate it.
im using Zwo 294mc proÂ
with Optolong L extremeÂ
Flats taken at same temp as lights
27KaduÂ
https://drive.google.com/drive/folders/107kE4OWkXy0MaPCaTjyyTWCaCETD4emW?usp=sharing
It looks like an issue with your flats and darks, your image without flats/darks looks ok.
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Thank you, I've tried stacking without flats still the same the Blue is missing in the final stacked image.
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Try with out the master dark, it works ok for me see above image and it looks like you are using PixInsight?
 This is what I'm getting without flats yellowish overcast and when i do channel extraction in Pix the blue channel is empty.
@jaspreet123456 I integrated your files in APP 1.083-beta2 and got this result
The histogram on the right shows that there is blue data in the result. The green cast needs to be reduced obviously and this is normal for OSC.
However, as @gary-clayton showed there probably is an issue with the master dark. When was the master dark created and with what version of APP? Do you still have the raw darks that the master was created from? If yes, please use those instead of the master and see if that solves the issue.
Also notice that you uploaded the master flat in the flats directory. Either only load the master flats or the raw flat subs and not both.
it does appear to be your master dark that is at issue, I stacked your image with out flats/darks in APP and then extracted
the colour channels in PixInsight, please see image below.
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@gary-clayton @wvreeven thank you both for your help it indeed was my darks, I did my darks 4-5 months ago i didn't know we had to do them regularly. I'll take new darks tomorrow and try again. Thank you both for your help. Really appreciate it.
