IR Photometer |
Decommissioned The IR photometer built by the Infrared lab inc. is used at the cassegrain focus. It employs a InSb detector cooled to the criogenic temperature of liquid nitrogen. A chopper system allow a fast sampling of the telescope and sky background. The photometer is designed to work J, H, K, L, M, of the standard Johnson photometric system, but due to the low hight of the observatory and the characteristics of the telescope only the J, H, K filters can be used . Filters
Limiting magnitude
Mean atmospheric extinction coefficients
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