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.
Hi. Im new to Astronomy and have been trying to produce an image on APP from 200 lights and a number of darks. However, I keep getting a message that my RAM memory is insufficient. I get it sometimes at the "calculate Stars" section and sometimes at the "normalize" section and I have no idea how to stop this. I have increased the partition on my computer but am still getting it. Doesn't matter if I reduce the amounts of lights. Utterly frustrating. Can anyone help please as Im a bit of technophobe as well so any help would be appreciated as if you are talking to a thicko!
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Richie
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Hi Richard,
I have been using APP for a little over a year now and quite regularly process integrations involving 200 plus lights and have only once encountered an out of memory error message and this was at the Integration phase.
From idle watching of APP's memory usage display I do not recall seeing APP using that much memory during either of the Analyse Stars or Normalise stages where you report having problems though fortunately I do have 8 and 16 GB RAM systems at my disposal.
If your problem is still unsolved I think you will need to provide some more information about a) the hardware and OS you are using and b) the type of images files you are trying to process eg DSLR, CCD, colour, monochrome.  Is the system you are using very constrained and / or are you trying to process some exceptionally large files? How much memory have you currently granted to APP?
Regards
Mike
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