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.
Being mostly an urban shooter, and being mainly interested in broadband (primarily galaxies), I end up taking thousands of subs to obtain the desired integration times. I have just completed 22 hours on M81, (5 hours from my Bortle 3 dark skies, the rest from my Bortle 7 backyard). I have ended up with thousands of subs. To add insult to injury, I have data from two different setups (different pixel scale). My computer and hard drive simply can't cope with this. The only thing I can think of doing, until the computer situation changes, is to divide the stacking into smaller sessions that my computer can swallow and then re-stack the resulting stacks. I wonder how much would be lost in terms of signal by doing this and what would be the preferred strategy to do so? Is this even worth doing? will I get any signal gains from stacking, say, five or six sessions independently, and then recombining those?
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Would love to hear your thoughts-recommendations. I already know I will need to get a new computer at some point, but for now please limit your thoughts/advice to what I can do in my current situation.
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Thanks in advance for any ideas and happy new year!!
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Erik
Thousands, well that is impressive. 🙂 You should divide that data up into smaller sets indeed, when you stack say 100-200 at a time with the proper calibration data etc, you will get all the benefits of any dithering you do and overall SNR improvements. You can then combine those integration together again (without using calibration data again) and have a nice result. Theoretically it's better to have all subs together, but I haven't seen big differences when doing subsets of a lot of data.
Hi Vincent, thanks for taking the time to reply. That`s great news! Every individual stack has a substantial number of subs, and I do dither frequently and aggressively, so I should be in good shape to give this a try..
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Thanks again.
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Erik
