• A near-infrared photometer for the 1-m telescope of Vainu Bappu Observatory

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    • Keywords


      Near-infared photomery; InGaAs detectors; variable stars.

    • Abstract


      A near-infrared photometer based on an InGaAs PIN photodiode and the filter set recommended by Infrared Working Group (IRWG) have been designed and built. It is mounted on the 1-m Carl–Zeiss telescope at the Vainu Bappu Observatory (VBO) in Kavalur, India. The main science goal is to observe bright sources (<5 magnitude) in the iZ, iJ and iH photometric bands. A discussion of the instrument and on-telescope performance during first-light tests are presented in this paper.

    • Author Affiliations



      1. Indian Institute of Astrophysics, Sarjapur Road, Bengaluru 560034, India.
    • Dates

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