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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Last Update: 19 May 1998