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.
The settings in APP are very helpful in order to develop narrowband recordings so well with a DSLR. Many thanks to Mabula !!!
Date of Images:
Teleskop oder Objektiv (Aufnahme): Canon EF 135mm f/2.0 L @ 2.8
Aufnahmekamera: Canon EOS 80D modifiziert
Montierung: Celestron CGEM
Teleskop oder Objektiv (Nachführung): TS Sucher 8x50
Nachführkamera: ZWO optical ASI 120 MM
Software: Adobe Camera Raw Version 6.7 · Aries Productions Astro Pixel Processor APP · O'Telescope BackYard EOS · Adobe Photoshop 5 CS · PHD2 Guiding 2.62 Autoguiding Software · Astronomy tools for Photoshop
Filter: Astronomik EOS clip Astronomik 12nm Ha
Zubehör: Zhiyou Universal L-Winkel · Sandor Cuzdi - Maske Fokussierhilfe · Baader 3 x Skysurfer lll · Teleskop-Austria Aperture Stopper
Datum:20. November 2020
Frames:Astronomik EOS clip Astronomik 12nm Ha: 80x180" ISO1600
Aufnahmedauer: 4.0 Stunden
Darks: ~19
Flats: ~34
Bias: ~42
The open star clusters and galactic nebulae in the constellation Auriga are interesting for many focal lengths. Whether as a detail or an overview, there is always a lot to see. Above left the "pancake" is an object from the Sharpless catalog and has the number SH2-232. I was amazed that this Nebula was so clearly visible in the short exposures.
There was a lot of water in the air during the night. Was delighted with the fine details.
The green channel had a very good signal from the H-alpha image taken with the color DSLR. The data made it possible to create a bicolor.
- easy crop
Sharless Objects - Distance in light years (ly)
Sh2-229 = 10 700 ly (IC 405, Flaming Star)
Sh2-230 = 10 500 ly
Sh2-231 = 5 870 ly
Sh2-232 = 5 870 ly
Sh2-233 = 5 870 ly
Sh2-234 = 7 500 - 10 000 ly (IC 417, Spider)
Sh2-235 = 5 870 ly
Sh2-236 = 10 700 ly (IC 410, Tadpoles)
Sh2-237 = 7 000 ly (NGC 1931, Fly)
Oh that is lovely indeed, very clean result.
Hi Vincent,
thanks for the kind words! Thanks to APP, such a result was possible!
CS, Wolfgang
