Five-frame real nightscape teaching case

Photographs: Filippo Dall’Aglio (@flick87).
Source: https://discuss.pixls.us/t/open-source-tool-for-sky-stacking-and-foreground-extraction/17204
License: Creative Commons Attribution-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-sa/4.0/

These are modified photo derivatives: identical locked-WB RAW development, common +2EV, sRGB encoding, linear-light downsampling to 641x960 and 8-bit JPEG compression. Derived images and stacked photo outputs remain CC BY-SA 4.0. This photo license does not claim to license the unrelated website/software.

Unzip the archive, then follow the case-page project preparation instructions at https://nightscapestacker.app/real-nightscape-case.html before importing the same five JPGs and project into the workbench. Projects require the exact file names, sizes and modification times. Built-in command-line unzip preserves the archive UTC timestamps; some graphical extractors, including the tested macOS ditto path, change those timestamps. The case-page project builder can adapt the supplied mask to the exact downloaded files after checking their public SHA256 hashes. Alternatively mark the conservative clear sky manually as shown in the tutorial. The project keeps frame1 as foreground and includes all5 frames.

The whole tree canopy and sky holes between branches are deliberately excluded. The foreground is the reference photo; no separate foreground exposure is used. A 16-bit export does not restore JPEG source precision. Inspect the center/corners/horizon before keeping the result. No noise-reduction percentage or full-resolution benchmark is claimed.
