Long wavelength infrared camera (LWIRC): a 10 micron camera for the Keck Telescope
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 293577
- Report Number(s):
- UCRL-JC-130643; CONF-980349-; ON: DE98056041; BR: YN0100000
- Resource Relation:
- Conference: SPIE international symposium on astronomical telescopes and instrumentation, Kona, HI (United States), 20-28 Mar 1998; Other Information: PBD: 1 May 1998
- Country of Publication:
- United States
- Language:
- English
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