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.
Glow of primery mirror and shadow secondery are on the integrated frame. This reflection is not seen neighter taken images nor calibrated-normalized images but integreted. I'm surprised, I image Pleiades earlier hours at same nights there is no reflection(s) on Pleiades.
My question is, how can I avoid this reflection if I can not, how can I remove it in APP?
Thanks for helps and advices.
Always difficult to say. I think it's not filter related (though you could check with your previous session) as usually those reflections are closer to stars. So it's likely an internal reflection in the scope, usually this requires a very careful study of your setup. As this is present in the data and not a gradient, it makes it harder to correct nicely, best is to get this solved on your setup.
You can try to use the light pollution correction to carefully place some boxes around it, but I'm not sure that will work very nicely.
@vincent-mod Thanks for reply Vincent. I also suspect about scope setup and colimation first, but as I wrote above this reflection does not exist on Pleiades image which is taken earlier hours of same nights. Pleiades contains plenty bright stars as well. I expected to see same issue there. This makes me confused.
Yes that makes it a bit confusing, maybe you had some other light source in the neighborhood (even a very weak one) that came into view of the scope while it was pointing to this object?
I'm not sure but I don't think so.
If you take a look my avatar I surrounded with street lights and there couldn't be much power lights than highways enlighting poles which are 300 meters away from me. My primary headache is light pollution but I image always under same conditions. This image is part of Jellyfish nebula, 40 degree above of horizon, no ground light source could affect but the star, I think.
Well, it could still be indirect light pollution (like reflecting of the insides of your scope, which is why some people with Newton scopes make it extra black). Having street-lights somewhat nearby, it could cause this. If it is indirect, there is something in your setup that reflects the light (probably). As I mention, it's very difficult to pinpoint if I'm not right there. 😉
