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

Edward H. Wishnow; William C. Danchi; Peter G. Tuthill; Ronald E. Wurtz; J. Garrett Jernigan; John F. Arens

doi:10.1117/12.317285

21 August 1998 Long-wavelength infrared camera (LWIRC): a 10-μm camera for the Keck telescope

Edward H. Wishnow, William C. Danchi, Peter G. Tuthill, Ronald E. Wurtz, J. Garrett Jernigan, John F. Arens

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317285
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The long wavelength IR camera 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 micrometers using ZnSe transmissive optics. A set of filters, a circular variable filter, and a mid-IR polarizer are available, as are three plate scales: 0.05 inch, 0.10 inch, 0.12 inch 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 wit both the hardware and software of the other Keck IR instruments NIRC and LWS. A new pre-amplifier/A-D converter has been designed and constructed which decreases greatly the system susceptibility to noise.

Citation Download Citation

Edward H. Wishnow, William C. Danchi, Peter G. Tuthill, Ronald E. Wurtz, J. Garrett Jernigan, and John F. Arens "Long-wavelength infrared camera (LWIRC): a 10-μm camera for the Keck telescope", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317285

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available