The Wade i r-i photometric system

Basic Reference

Wade R.A., Hoessel J.G., Elias J.H., Huchra J.P. 1979, PASP 91, 35


A new two-color system for photoelectric photometry has been devised to aid interpretation of near-infrared photographs taken on the IV-N emulsion. The system should also lend itself to applications using silicon diode detectors. This paper describes the instrumentation, establishement of standard stars, and transformations to other systems. In addition, photoelectric sequences are given for some fields near the galactic plane.


Access to the data and references

Asiago Database on Photometric System (ADPS)

Indices and Parameters

i, r-i


i : Wratten 88a gelatin filter + Balzers infrared mirror
lam_eff : 6500 Å
r : 3 mm Schott RG610 + Balzers B1 short pass interference filter + Schott KG1
lam_eff : 8200 Å


ITT FW-118


With Arizona-Tonantzintla UBVRI photometry

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Last update: 15 August 1996