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.
For some reason I can no longer preview images in the image viewer to use the preview adjustments in DPP. The only way to view stacked images is to open them with one of the adjustment tools, which does not let me switch back and forth between different iterations of pre-processing.
Thoughts?
Does double click the image line work? For me it does on windows
That did work, thanks. Used to just be a single click to view each image, wasn't aware of the change.
Clear skies!
Eric
For some reason I can no longer preview images in the image viewer to use the preview adjustments in DPP. The only way to view stacked images is to open them with one of the adjustment tools, which does not let me switch back and forth between different iterations of pre-processing.
Thoughts?
Hi Eric,
Yes, I wrote all changes down in the release notes, but it was quite a lot of information 😉 so maybe I should let APP inform you about the changes in the new version?
that would mean, that you can ask APP for the latest release notes to read and study them if wanted.
I made this change for several reasons, previously, if you selected/deselected a frame, APP would immediately start to load that frame which wasn't nice I think. And it made it impossible to do a multi-selection/deselection of frames. This is now possible by dragging your mouse over the frame list with the left mouse button or using shift/ctrl keys.
Furthermore, I have added a right-mouse-click menu which I hope you find usefull. I will be adding more options to this right-mouse-click menu in due time, like setting the reference frame for instance, or renaming a file.
Mabula
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Hi Mabula - I think there are some benefits to the double click method, but there's also a downside for me. When I'm trying to preview all of my subs one by one, I used to be able to click on the first sub and then arrow down to look at the next one. Now I need to double click on each successive sub to do this.
It's not terribly inconvenient, but it does make it somewhat more cumbersome. Perhaps there is a way to make the behavior in APP that, once an image has been double clicked, a subsequent down or up arrow would move to the next sub and automatically do the equivalent of a double click (i.e., display that image)? If I then single click on an image, that would NOT load that image into the preview window (I'd still need to double click to preview), so the ability to select a group of images with a Ctrl-click or Shift-click would still work.
Scott -Â http://www.astronomersdoitinthedark.com/
Hi Scott,
Thank you 😉 for your thought on this.
I should be able to fix that for you, I'll try to add the option that the up and down arrows work again for loading a new frame in the list if a frame was already loaded.
Mabula
