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 am sure I am doing something wrong, however I am unable to figure out what. I create an artificial flat which corrects a single image VERY well and looks like it should when viewing the Master. When trying to view the single l-calibrated image APP just sits there showing "loading new image into image viewer" at the top. The following is what shows up in the console.Â
22:20:56 - IMAGE VIEWER: loading into Linear Calibrated Image Loader: C:\Users\Les\Desktop\Astro\M79\m79_300sec_1x1__0009.fit 22:20:56 - 2) CALIBRATE: VERIFY CALIBRATION MASTERS: all frames are verified 22:20:56 - FRAME DETAILS UPDATER: starting... 22:20:56 - FRAME DETAILS UPDATER: no new frames to add 22:20:56 - FRAME DETAILS UPDATER: rebuilding all frame details... 22:20:56 - FRAME DETAILS UPDATER: checking if frames were identified earlier... 22:20:56 - FRAME DETAILS UPDATER: adding frame marks... 22:20:56 - FRAME DETAILS UPDATER: updated succesfully 22:20:56 - 2) CALIBRATE: trying to find calibration details of light frame: C:\Users\Les\Desktop\Astro\M79\m79_300sec_1x1__0009.fit 22:20:56 - 2) CALIBRATE: found calibration masters for light frame: C:\Users\Les\Desktop\Astro\M79\m79_300sec_1x1__0009.fit 22:20:56 - 2) CALIBRATE: Master Dark : C:\Users\Les\Desktop\Astro\80MM_85FR_Cal\MD-ISO_gain_200.0-exp_300.0s-20subs-ASI_Camera__2_-4144x2822-NR-avg.fits 22:20:56 - 2) CALIBRATE: Master Flat : C:\Users\Les\Desktop\Astro\M79\MasterFlat-ISO_gain_200.0-exposure_300.0s-Instrument_ASI_Camera__2_-artificialFlatFromLight.fits 22:20:56 - 22:20:56 - GENERAL IMAGE LOADER: loading frame C:\Users\Les\Desktop\Astro\M79\m79_300sec_1x1__0009.fit 22:20:58 - 2) CALIBRATE: Adaptive Data Pedestal: enabled 22:20:58 - 2) CALIBRATE: Adaptive Data Pedestal set at: 0 22:20:59 - GENERAL IMAGE LOADER: cancelled loading frame C:\Users\Les\Desktop\Astro\M79\m79_300sec_1x1__0009.fit
Also I cannot stack using the artificial master flat. I truly hope you can help, the flats correct the individual images perfectly, yet I can't seem to get the artificial master flat to apply.
I have placed a single image, the Artificial Master Flat, and Master Dark here.Â
I have downloaded your data and I have located the bug. There indeed is one. It has to do with the artifical flat being 3 channel data and the masterdark being 1 channel CFA data. APP has a problem.
I will fix this and will make sure that this fix is included in the next APP release 😉
