release string | calibration_count int64 | cover_observation_id string | observation_span list | instrument_counts dict | mean_zero_point dict | ordering_rule string |
|---|---|---|---|---|---|---|
night-sky-calibration-ledger | 5 | OBS-10004 | [
"2025-01-20T19:45:00",
"2025-07-04T04:04:00"
] | {
"Aurora": 1,
"Meridian": 2,
"Zenith": 2
} | {
"Aurora": 24.205,
"Meridian": 25.313,
"Zenith": 24.25
} | observed_at asc, instrument asc, filter asc |
Night-sky Calibration Ledger
Approved photometric calibration observations for the observatory archive.
- Retained calibrations: 5
- Cover observation: OBS-10004 — Zenith / R
- Observation span: 2025-01-20T19:45:00Z to 2025-07-04T04:04:00Z
- Instrument counts (Aurora/Meridian/Zenith): 1/2/2
- Mean zero points (Aurora/Meridian/Zenith): 24.205/25.313/24.250
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