Design and Expected Performance of GISMO-2, a Two Color Millimeter Camera for the IRAM 30 m Telescope

Abstract

We present the main design features for the GISMO-2 bolometer camera, which we build for background-limited operation at the IRAM 30 m telescope on Pico Veleta, Spain. GISMO-2 will operate simultaneously in the 1 and 2 mm atmospherical windows. The 1 mm channel uses a \(32 \times 40\) TES-based backshort under grid (BUG) bolometer array, the 2 mm channel operates with a \(16 \times 16\) BUG array. The camera utilizes almost the entire full field of view provided by the telescope. The optical design of GISMO-2 was strongly influenced by our experience with the GISMO 2 mm bolometer camera, which is successfully operating at the 30 m telescope. GISMO is accessible to the astronomical community through the regular IRAM call for proposals.

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Acknowledgments

This work was supported through NSF ATI grants 1020981 and 1106284.

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Correspondence to Johannes Staguhn.

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Staguhn, J., Benford, D., Dwek, E. et al. Design and Expected Performance of GISMO-2, a Two Color Millimeter Camera for the IRAM 30 m Telescope. J Low Temp Phys 176, 829–834 (2014). https://doi.org/10.1007/s10909-014-1086-8

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Keywords

  • Transition Edge Sensor
  • Noise Equivalent Power
  • Silicon Monoxide
  • Bolometer Array
  • Thermal Blocker