OriginStack sample session: Messier 37, open cluster - 45 raw Celestron Origin frames

45 raw Celestron Origin light frames of Messier 37 (open cluster), 30 s each, captured 2025-12-11, with the session's own dark, flat and bias frames and the capture app's info.json. A rich open cluster: hundreds of stars per frame. 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 "09_open_cluster_M37" -o stack.fits. With OriginStack 2.21: 45 of 45 frames accepted; median star width in the frames about 6.8 px. The file ending _expected_result.jpg is the preview that run produced. Zip: 543 MB, SHA-256 8a026e040ea72c9a716053a62bd66aa924c4b21f7c6bc6e685d6115d17783260.