Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:person
gptkb:astronomer |
| gptkbp:developedBy |
Bortle scale
|
| gptkbp:field |
gptkb:astronomy
|
| gptkbp:knownFor |
Bortle scale
|
| gptkbp:language |
English
|
| gptkbp:nationality |
gptkb:American
|
| gptkbp:notableWork |
Bortle scale
|
| gptkbp:occupation |
gptkb:astronomer
|
| gptkbp:publishedIn |
gptkb:Sky_&_Telescope
|
| gptkbp:bfsParent |
gptkb:Sky_&_Telescope
gptkb:Amateur_astronomers |
| gptkbp:bfsLayer |
8
|
| https://www.w3.org/2000/01/rdf-schema#label |
John E. Bortle
|