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,
New to APP and love it thus far. My LRGB images are a blend of 1x1 luminance and 2x2 RGBs from a mono camera. When creating the final LRGB image, there is a bit of blockiness from the 2x2 integrations that I've been playing with the interpolation methods to minimize. I have found that using the Cubic B spline interpolation method generates more pleasing round stars vs. the others but at a price of a slightly softer image. I am curious if there are other recommendations with the settings to get the best of stars and sharpness ?
Thanks
Hi @comet57,
Welcome to the APP forum! Glad you like it 😉
A blockiness with bin 2x2 data is to be expected if the stars become too small when compared to the size of the "bigger pixels".
I would recommend to simply use Lanczos-3 because it's the best data-interpolater. Cubic B-spline basically adds a gaussian blur into the data resampling, which indeed can have a nice affect like you mention. Noise is reduced, but sharpness is lost...
But since you create a LRGB integration, make the bin 1x1 L with Lanczos and don't worry about the RGB sharpness or noise levels. Since the L layer should provide both sharpness or noise levels if you make the LRGB composite. That is the essence of making an LRGB composite. The RGB data only provides the color.
If you aren't using the L layer 100% as L, then yes, you might better use Cubic-B-spline for the RGB data to get a smoother result. But only because apparantly, bin 2x2 might be too large for the resolution of your optics. So it depends on the optics what you want to do I think. (and sky conditions as well)
Kind regards,
Mabula
