MAY 4 2026: APP 2.0.0-beta44 has been released !
New improved internal memory controls should now work on all computers
May 1 2026: APP 2.0.0-beta43 has been released !
Improved internal memory controls (much more stable and faster on big datasets), fixed CPU image viewer, fixed Narrowband extraction demosaic algortihms.
Apr 29 2026 APP 2.0.0-beta42 has been released !
New improved Normalization engine, Fixed random crashes in integration, fixed RGB Combine & Calibrate Star Colors, fixed Narrowband extraction algorithms, new development platform with performance gains, bug fixes in the tools, etc...
Apr 14 2026: Google Pay, Apple Pay & WeChat Pay added as payment options
Update on the 2.0.0 release & the full manual
We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.
Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.
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. 😉
