Long wavelength infrared camera (LWIRC): a 10 micron camera for the Keck Telescope

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The Long Wavelength Infrared Camera (LWIRC) is a facility instrument for the Keck Observatory designed to operate at the f/25 forward Cassegrain focus of the Keck I telescope. The camera operates over the wavelength band 7-13 {micro}m using ZnSe transmissive optics. A set of filters, a circular variable filter (CVF), and a mid-infrared polarizer are available, as are three plate scales: 0.05``, 0.10``, 0.21`` per pixel. The camera focal plane array and optics are cooled using liquid helium. The system has been refurbished with a 128 x 128 pixel Si:As detector array. The electronics readout system used to clock the ... continued below

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11 p.

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Wishnow, E.H.; Danchi, W.C.; Tuthill, P.; Wurtz, R.; Jernigan, J.G. & Arens, J.F. May 1, 1998.

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Description

The Long Wavelength Infrared Camera (LWIRC) is a facility instrument for the Keck Observatory designed to operate at the f/25 forward Cassegrain focus of the Keck I telescope. The camera operates over the wavelength band 7-13 {micro}m using ZnSe transmissive optics. A set of filters, a circular variable filter (CVF), and a mid-infrared polarizer are available, as are three plate scales: 0.05``, 0.10``, 0.21`` per pixel. The camera focal plane array and optics are cooled using liquid helium. The system has been refurbished with a 128 x 128 pixel Si:As detector array. The electronics readout system used to clock the array is compatible with both the hardware and software of the other Keck infrared instruments NIRC and LWS. A new pre-amplifier/A-D converter has been designed and constructed which decreases greatly the system susceptibility to noise.

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11 p.

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OSTI as DE98056041

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  • SPIE international symposium on astronomical telescopes and instrumentation, Kona, HI (United States), 20-28 Mar 1998

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  • Other: DE98056041
  • Report No.: UCRL-JC--130643
  • Report No.: CONF-980349--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 293577
  • Archival Resource Key: ark:/67531/metadc677564

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • May 8, 2017, 12:45 p.m.

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Wishnow, E.H.; Danchi, W.C.; Tuthill, P.; Wurtz, R.; Jernigan, J.G. & Arens, J.F. Long wavelength infrared camera (LWIRC): a 10 micron camera for the Keck Telescope, article, May 1, 1998; California. (digital.library.unt.edu/ark:/67531/metadc677564/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.