Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:photometric_system
|
| gptkbp:alsoKnownAs |
gptkb:UBV_system
|
| gptkbp:B_filter |
blue
|
| gptkbp:basisFor |
many modern photometric systems
|
| gptkbp:colorIndices |
gptkb:B-V
gptkb:U-B |
| gptkbp:commonIn |
gptkb:astronomy
|
| gptkbp:countryOfOrigin |
gptkb:Yerkes_Observatory
|
| gptkbp:developedBy |
gptkb:William_Wilson_Morgan
gptkb:Harold_Johnson |
| gptkbp:enables |
color index measurement
|
| gptkbp:focusArea |
gptkb:B_filter
gptkb:U_filter gptkb:V_filter |
| gptkbp:introducedIn |
1953
|
| gptkbp:standardStars |
gptkb:Vega
|
| gptkbp:U_filter |
ultraviolet
|
| gptkbp:usedFor |
measuring stellar magnitudes
|
| gptkbp:V_filter |
visual
|
| gptkbp:bfsParent |
gptkb:Bessel_V
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Johnson-Morgan system
|