The RI photometric system
Basic Reference
Kron G.E., Smith J.L. 1951, ApJ 113, 324
Abstract
Magnitudes in the red and infrared spectral regions are tabulated for stars of
the Sequence, Harvard Standard Regions C4, C6, and C12, and Kapteyn Selected
Areas 51, 57, 61, 64, 68, and 71. The methods employed for calibrating the
photoelectric photometer are described in detail. An effort has been made to
reduce systematic errors to a minimun. Not less than five stars were measured
in cach area. Stars in Areas 57 and 61 were observed to magnitude 16 with the
Mount Wilson 100-inch reflector. The limiting magnitudes in the remaining areas
are from 8 to 12. The zero point of the new system is fixed by reference to
magnitudes on the International System of the Polar Sequence.
Content
Access to the data and references
Asiago Database on Photometric System (ADPS)
Indices and Parameters
V, V-R, R-I, V-I, R, I
Filters
- V
- R
- I
Photomultiplier
Continental Electric CE25A/B
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Last update: 13 September 2002