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.
Have you checked the neutralize background option? All OSC will make a green tint if this is not enabled. There are more green pixels than blue or red.
Have you checked the neutralize background option? All OSC will make a green tint if this is not enabled. There are more green pixels than blue or red.
Thank you very much Stefan @digitaliz-se for assisting here. The main reason for the data to look green is not that there are 2x green pixels over red and blue ones, but rather that the sensor, as most sensors, is more sensitive in the green wavelengths when compared to red and blue wavelengths 😉
Thanks Stefan, I know about a bit of postprocessing but was asking for the correct bayer pattern to use.
By the way, that option takes the green cast away but could also be done in PixInsight for example.
Right now I'm experimenting with different masks and for the moment RBGGG.... etc seems to
give the correct/normal greyish looking output. ( Efectively turns out Gray-scale image )
When I apply a masterflat I made yesterday things turn up terribly green so that's likely the
culprit but when stacking without masterflat using RGGB as debayer mask, things come out terribly
green again!
Of course I was imaging from my lightpoluted balcony so that's also an important factor.
Maybe will do some testing with an L-Extreme filter to get rid of the light polution.
That's why I'm asking, I'm confused at the moment.
Regards,
Mert
Hi Mert,
Does the camera maker provide information on the correct Bayer mask? It could very well be that RGGB is the correct one, and that simply the combination of your sky conditions and filter used, makes the result very green. Best way to know if you have the correct mask is to apply Background Calibration to your stacked result or simply on an individual light frame. Background Calibration is one of the Tools in the TOOLS tab. That is more accurate than the background neutralization option below the histogram. After background calibration the sky should be dark gray and the bright stars should be blue and the smaller stars red. Then you know for sure it is correct.
Let me know if this helps 😉 or if you want me to have a look at your data as well.
In 5) Normalize, what settings do you use? Is the Background neutralization on or not? If it is on, and you get a green result like that, there is certainly a problem here with your data or a bug in APP somehow.
