| Attribute name | Attribute type | Docstring | Unit |
|---|
| arcfile | str | The unsplitted RawFits filename | |
| author | str | The author of the comment or grade | |
| comment | str | The comment | |
| date | datetime | The date the comment was made | |
| grade | str | The grade, either A,B,C,D,X or empty | |
| object_id | oidtype | The object identifier
The object identifier is an attribute shared by all persistent
instances. It is the prime key, by which object identity is established | |
| obsdate | datetime | The DATE-OBS of the Observing Block | |
