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.
How is the blue channel composed when using Ha-OIII Color.
The algorithm Ha-OIII Color and the Airy Disc are almost identical if you compare the end result.
I am asking since I wish to use the data in the blue channel, then composing in the RGB Combine tool.
Extracting Ha, OIII and then redoing the stack for Ha-OIII Color just to get the blue channel is cumbersome.
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/Stefan
How is the blue channel composed when using Ha-OIII Color.
The algorithm Ha-OIII Color and the Airy Disc are almost identical if you compare the end result.
Both the blue and green channel contain OIII data. The exact amount depends on the filter used and the sensitivity of the green and blue pixels to the passband of the filter. The difference between the two is that choosing Ha-OIII Color makes APP split the Ha and OIII channels (by combining the G and B channels into OIII), process the data and then split up again. This will result in slightly lower noise when compared to Airy Disc.
I am asking since I wish to use the data in the blue channel, then composing in the RGB Combine tool.
Extracting Ha, OIII and then redoing the stack for Ha-OIII Color just to get the blue channel is cumbersome.
This is the only way to separate Ha and OIII in APP. In a future version it will be possible to split Ha and OIII in one go. You can extract the G and B channels and combine them into a single OIII mono image yourself in external image processing software if you prefer.
HTH, Wouter
Ok,Â
Thanks!
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/Stefan
