| creation_date | datetime | Date this object was created | | time.epoch |
| extinctionpointlist | PhotExtinctionPoint | A list of PhotExtinctionPoint objects | | |
| 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 |
| wavel_incr | float | The wavelength increment | | NUMR |
