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.
What am I doing wrong. Or is it something that my capture software is doing (SharpCap). Below is what my fits file and ending tiff file looks like on screen.
 Update, I processed in Deep Sky Stacker and the end result was a non-stretched single frame. So I don't think it is the capture software.
Thanks for the FITS file. The FITS header indicates that the Bayer pattern is GBRG with a note that some software need RGGB. Please make sure to set it to that Bayer pattern in tab 0. It looks like DSS needs that as well since the colors of the image that you stretched in Gimp are off. Can you give that a try in APP and see if that improves the stack?
Thanks for the FITS file. The FITS header indicates that the Bayer pattern is GBRG with a note that some software need RGGB. Please make sure to set it to that Bayer pattern in tab 0. It looks like DSS needs that as well since the colors of the image that you stretched in Gimp are off. Can you give that a try in APP and see if that improves the stack?
I saw that too, Made the change.No difference. Still 4 boxes
Could you try the almost funny trick of restarting the computer? And if that still doesn't work, what does switching off of OpenGL do (the button on top of APP).
Not for me. When I load the FITS as a light and then double click on it in APP, so it opens in the image viewer, it looks like a normal, square image to me.
Could you try the almost funny trick of restarting the computer? And if that still doesn't work, what does switching off of OpenGL do (the button on top of APP).
Clicking the OpenGL box fixed it!! Thanks So Much!!! Do you know why that may have been causing the issue?
Great! So that may be a number of things, like having an Intel gfx driver together with another, conflicting. Or your driver is out of date, things like that. Or your gfx card doesn't support openGL4 properly.
