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 load a HARGB and get this error when I hit Ccalculate" Any suggestions?
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Using 1.077
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thanks
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David
Full message is;
Encountered error in module:
DeepSkySliderImageTask
Error message:
java.lang.NullPointerException
Cause:
null
java.util.Hashtable.put(Hashtable.java:460)
gh.<init>(Unknown Source)
fL.a(Unknown Source)
fL.a(Unknown Source)
Please upgrade to 1.079 first, a lot of bugs have been fixed in between these versions. You can download it here: https://www.astropixelprocessor.com/community/appreleases/downloads/
Thanks Vincent
Hope you are doing well and the move from Scotland went OK.
Unfortunately the same error in 1.079
Yes, I'm doing fine at the moment. Hoping to get into a normal rhythm when everything can open up again and we can move into a bigger place. 🙂
Ok, so let's dive a bit deeper into this. What are you loading exactly, separate H-alpha and separate RGB or an already integrated HaRGB image?
Thats good. Yes its a very strange time all-right.
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So this is a set of fits files made available by a guy on one of the forums to help others learn. And its the first time i've tried to do HARGB in APP.
They are .fit, one each for Ha, R, G and B. Each file is around 245mb
I can open the .fit in fits liberator and save it as a .tiff which I can then open and combine in APP.
Even if i load the .fits in as seperate other/processed files (rather than trying to combine them striaght from the folder) when I try to open them individually in the preview window I get the same error.
Ok interesting. So APP is able to load fits files just fine, there shouldn't be a need to convert them. But you're saying that the reading of the fits (opening one up to display by double clicking on it) already causes the crash? So straight from loading it in as a light frame and viewing it?
I think it would be great to be able to look at the data directly, can I download them somewhere? And if not, would it be possible to share them on our server?
Hmm, bit reticent about that as its not my data. The links are here; https://theskysearchers.com/viewtopic.php?f=22&t=9319 the second last post but maybe you will not get access if you are not a member. The one I'm trying just now ids the triffid but had the same problem with the eagle.
If you cant get access let me know and I could ask the OP if he'd be OK with me sharing it for this purpose.
Ok, well I don't want to do anything that the original author doesn't want ofcourse, so maybe you'd like to ask him directly? If it would be just 1 file that seems to cause a crash, that will already be very helpful. Another idea could be to use a different data-set like the one available here: https://www.astropixelprocessor.com/complete-lrgb-tutorial-of-ngc292-the-small-magellanic-cloud-by-christian-sasse-itelescope-net/ this is a very nice guide to follow as well.
If you choose to go for the tutorial here, please still ask for that file that crashes, we're always very interested in that as we can debug APP further. 🙂
Thanks Vincent,
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I've already downloaded that turorial just never got around to trying it. I'll give it a go later and if it works OK I'll ask the author if its ok to share.
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Rgds
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David
