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. Before I release it, I will make sure that everything is working properly and then I will release it.
So I combined my narrow band images with the RGB combine tool, and I seem to have some weird gradient in the corners and edges of my image. I tried to use the light pollution removal, but that just made the image worse, then I got to thinking that narrow band shouldn't have a lot of light pollution especially at 3.5. I believe that I'm missing something, just not sure. below is a screen shot of my image, any thoughts and ideas would be appreciated. I know that I have some vignetting too.... I've sensed adjusted the back focus to reduce that and to get rounder stars all the way to the edges.
Thanks
Zach
I guess you are using flats per filter?
@vincent-mod yes I am, is this incorrect?
No, that is correct, but I would've assumed that (given they are working ok), the vignetting would be taken out. So I'm suspecting an issue with the flats possibly.
@vincent-mod I think your right about the flats, I went back and looked at the master flats, and not sure what they should look like, but mine don’t look awesome. I’ll have to work on getting better flats. Since taking this image, I’ve adjusted the back focus ( actually increased it to reduce the vignetting and get round stars further out to the edges). I’ll have to try and take some practice flats and work on that.
Good ideas, you need to look out for proper illumination of the sensor with the exact setup used when taking the lights. This means that you can go down a bit with the gain (to increase dynamic range) and to illuminate so that it doesn't clip on either side of the spectrum. Preferably get it more to the right than the left (the 50% which is used a lot is just a guideline, with 60-70% you can get better illumination possibly). Make sure to illuminate for 1-2 seconds per flat sub and of course use darkflats (darks with the same exposure and gain as the flats) to calibrate them.
@vincent-mod I do use dark flats, I’m using NINA’s flat wizard with a Pegasus flat panel. I know that I set the 50% mark, and the exposure’s were all fairly long 10-30 secs if I remember. I will work on this, in the meantime, I’ll have to figure out a way to kinnda salvage my image 😀. Thanks
