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 just installed a try out version, but can I adapt screen resolution? I added an example, where outside the photo the screen is sharp (4K screen), but the photo is not 4K, whilst this is so important for astrophotographers, and a benefit of the screen.Â
This topic was modified 8 years ago by Mabula-Admin
Thanks. Yes, it is a retina display: 21.5-inch (4096 x 2304, Intel Iris Pro Graphics 6200 1536 MB graphic). I noticed the pixels, which are normally hardly visible with the retina display. It is on an iMac, but the effect must be the same on an Macbook with retina display.
Thank you very much for reporting this issue. I have fixed the implementation of image drawing for HiDPI screens like the Apple retina displays. I was able to test this successfully using a Macbook Pro 2016 with a Retina display.
APP 1.068 will be released tomorrow with this fix, check the second release note 😉 :
Probably due to the recent update with graphics driver, the Retina (4K) resolution is lost again in V1.079 (it was fixed in 1.068) on an iMac (21.5" screen).
In the top split of the picture below, the star has a lower screen resolution than the screen (e.g. the question mark). Looks like just FHD.
In the bottom split of the picture, the same star is enlarged to show that the photo resolution is not limiting it.
Hope you can fix this again, because APP is so beautiful on a Mac (with full resolution).
Probably due to the recent update with graphics driver, the Retina (4K) resolution is lost again in V1.079 (it was fixed in 1.068) on an iMac (21.5" screen).
In the top split of the picture below, the star has a lower screen resolution than the screen (e.g. the question mark). Looks like just FHD.
In the bottom split of the picture, the same star is enlarged to show that the photo resolution is not limiting it.
Hope you can fix this again, because APP is so beautiful on a Mac (with full resolution).
The current macOS version is Catalina 10.15.4. I have updated it on my Mac shortly after its release on April 8th, but I don't recall if the previous version (10.15.3) did not show this issue. Moreover, I also updated APP to 1.079 immediately after its release on April 15th. I checked the release notes of Catalina updates, but no specific mentioning on screen drivers or resolution.
