Datatype: RIk
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 fileter combination.
The datatype ric refers to the RI photoelectric photometry in the
system of Kron. In some observation sets, only the R and I colours
have been observed.
Record structure
| No | : | Star number |
|---|
| Ref | : | Data source |
|---|
| R | : | R magnitude |
|---|
| R-I | : | R-I colour index |
|---|
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Jean-Claude.Mermilliod@obs.unige.ch
Last Update: 19 May 1998