| creation_date | datetime | Date this object was created | | time.epoch |
| filename | str | The name of the associated file | | meta.id meta.file |
| globalname | str | The name used to store and retrieve file to and from Storage | | meta.id |
| mag_id | str | Identifier for the photometric band | | instr.filter phot.mag |
| skybrightnesspointlist | PhotSkyBrightnessPoint | A list of PhotSkyBrightnessPoint objects | | |
