From Brian Stalder, July 27 2024:
This pertains to Canon camera all-sky images at Rubin site.
Indeed, they're there. Directory is
/sdf/data/rubin/offline/s3-backup/lfa/AllSkyCamera/2024/07/26
On USDF in ~/notebooks I made CanonShow.ipynb, gets and displays allsky images.
Image names are
asc2407260306.cr2
2407 is year and month
26 is date
then xxxx is sequence number.
spacing starts 5 min apart at low seq number.
images begin at noon in timestamp units. I think that's around 0800 local Chile time, so morning.
I think timestamp is in UT. Good.
at 2300 the interval changes to 1 minute. That continues until 1000. Images taken around 0200 should be evening twilight. On July 26 that is image number around 313
Image 0513 has timestamp of 0520 and shows stars.