OriginStack sample session: Sculptor Galaxy (NGC 253), large galaxy - 45 raw Celestron Origin frames

45 raw Celestron Origin light frames of Sculptor Galaxy (NGC 253) (large galaxy), 10 s each, captured 2025-10-11, with the session's own dark, flat and bias frames and the capture app's info.json. A large spiral galaxy that fills much of the field, leaving little empty sky for background fitting. Colour sensor (Origin178), 6-inch f/2.2 RASA, 3056×2048 Bayer FITS. Filter setting in the headers: Clear. The frames are the best of the session by quality score, one from each of 45 consecutive time bins. The observer's location, GPS, airmass, session id and camera serial number were removed from the headers and json files; pixel data is unchanged. Capture time and the target's coordinates were kept. Stack it with OriginStack: python originstack.py -d "02_large_galaxy_NGC253_Sculptor" -o stack.fits. With OriginStack 2.21: 45 of 45 frames accepted; median star width in the frames about 3.6 px. The file ending _expected_result.jpg is the preview that run produced. Zip: 506 MB, SHA-256 1d2a669aee61e17f0260c9351cf7f23a1b6f1163146a45390144c8174dc1306c.