| Description: The filter_id attribute provides a short string identifier for an instrument filter through which an image or measurement was acquired or which is associated with a given instrument mode. |
| Namespace Id: img | Steward: img | Class Name: Optical_Filter | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 16 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | No Values | |