Mar 28 2026 APP 2.0.0-beta40 will be released in 7 days.
It did take a long time to have the work finished on this and it will have a major performance boost of 30-50% over 2.0.0-beta39 from calibration to integration. We extensively optimized many critical parts of APP. All has been tested to guarantee correct optimizations. Drizzle and image resampling is much faster for instance, those modules have been completely rewritten. Much less memory usage. LNC 2.0 will be released which works much better and faster than LNC in it's current state. And more, all will be added to the release notes in the coming weeks...
Update on the 2.0.0 release & the full manual
We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.
Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.
Hello,
Query on light pollution removal tool (and star calibration and HSL for that matter).
My camera gives alternative BGGR and GRBG files in a single session (see my other posts). Thus, I always have two stacks for every project after sorting out frames.
I do a BGGR debayer (force CFA) stack, and then another for the GRBG. Â
I then need to integrate both together, which i do using 'supported' and adaptive airy disk'. Thsi wirks fine, but...
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Is it better the do light pollution removal, star calibration and HSL tool on each stack and then integrate them, or should I integrate both stacks and then correct the master overall stack? Are artefacts or noise introduced if processed stacks are stacked together using lpc?
(side note: technically, my flats and flat darks will have 50% BGGR and 50% GRBG, which I hope is not a problem when calibrating as a single master dark, master flat and master flat dark?, or are they greyscaled?)
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Thanks, Col
You can fully process the results, keeping them linear at all times and then combine, that's fine. It is technically better to do subs all at once, but when you have enough data per integration I usually don't see a difference to be honest. I don't think extra noise is injected using the LP tool and certainly no artefacts. I had good results with doing that first and then combining the result, after which I tend to do yet another LP on the combined result.
