Datatype: VRIcCCD
For historical reasons, the VRI photometry has produced several systems
which have quite similar, but the V-R and R-I indices are not exactly
in the same standard system. Therefore a datatype has been attributed to
each realisation of the VRI filter combination.
The datatype vricccd refers to the VRI CCD photometry in the
system of Cousins. Observations of V and I only are recorded under the
datatype VIcCCD.
Record structure
| No | : | Star number |
|---|
| Ref | : | Data source |
|---|
| V | : | V magnitude |
|---|
| V-R | : | V-R colour index |
|---|
| R-I | : | R-I colour index |
|---|
Database access
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Jean-Claude.Mermilliod@obs.unige.ch
Last Update: 17 February 1998