2026-10-09 APP 2.0.0-beta48 has been released !
This is mainly a bug fix release for the reported bugs in beta47. In addition it has a significant User Interface performance improvement noticable when you need to process 1000s of images in APP.
2026-10-03 APP 2.0.0-beta47 has been released !
This is a very big release... many code optimizations/rewrites, many parts of APP are much faster and more precise, especially star analysis and registration are much faster ! Big mosaics will go much faster 🙂
And we introduce a new preview filter, which includes the new Adaptive Deep Sky Stretch and a General Levels Stretch, this has been long over due. The old preview filter (the panel on the right side to stretch and preview your data) has not been updated for a couple of years and it is a critical part of any APP session.
Adaptive Deep Sky Stretch or ADSS is a much more intuitive stretch algorithm. It is also color preserving (which is a great new addition in itself ! ) which means that the highlights are no longer bleached, color is maintained from the linear data while stretching. You can simply stretch your data using the sky background level and signal width sliders which work much easier and more intuitive. You no longer need to fiddle with the old complicated sliders with zoom buttons. All the zoom buttons for the sliders are made redundant. And you can enter slider values in the slider value fields yourself. I will make a youtube video in the coming days to explain and fully introduce ADSS. Once the video is ready, it will be highlighted on the forum.
RGB Combine upgrade !. The RGB Combine Tool has been rewritten mostly. The tool is faster and easier to use and most importantly, the Luminance slider to inject a luminance channel or channels into the RGB composite is now working correctly. It no longer bleaches the RGB colors. Combined with the new ADSS preview, you will get much better and easier great composites with great color! I will also explain this in a new youtube video.
I'm trying to register two different focal lengths - 135mm widefield taken with an ASI 2600mc-p 3.76pixel and 380mm FL taken with an ASI 2600mc-p 3.76pixel, I've read through some of the posts that have asked the question, but I absolutely cannot get the two images to register. No matter what changes i make in module 4, i continue to get the same error message:
Please choose another reference frame or,
adjust star analysis paramters to increase the
amount of detected stars.
I've tried different star parameters in 3) and different parameters in 4), but nothing. I am frustrated.
Would someone be willing to help?
Thanks.
I guess you tried not selecting "same camera and optics" and such? Does it properly detect stars in both frames or does star analysis already fail?
@vincent-mod Same camera and optics were disabled. star analysis in module 3 does not fail. registration fails.
I've tried mosaic, normal, i use the different projective models and the various modules within the registration module to no avail.
I've also tried combining to final images (multiple subs) and that did not work. I then tried stacking individual subs from both focal lengths and it hangs up at 80-percent on module 4.
Ok, thanks for the extra info. I think I need the data to be able to see what is going on.
Go to https://upload.astropixelprocessor.com and use upload as username and upload as password.
Create a directory named “sj_chavez-twoscopes” and upload in there. Thank you!
@vincent-mod Awesome!
I'll upload the images tonight.
Thanks.
Hi,
So I'm looking at the data right now. It seems like you have a lot of light pollution in the final integrations. Did you use any calibration frames? I think it would be very helpful if you could upload, say, 10 good subs from each scope and the calibration data for them as well.
@vincent-mod
I'll load what I have tonight. Thanks.
