A hand-held near-infrared slit spectrograph for Earth observations

Srikrishna Kanneganti; Chan Park; Heather Hershley; Aaron Smith; Michael Skrutskie; John Wilson; Wes Traub; Charles Lam; Matthew Nelson

doi:10.1117/12.672294

15 June 2006 A hand-held near-infrared slit spectrograph for Earth observations

Srikrishna Kanneganti, Chan Park, Heather Hershley, Aaron Smith, Michael Skrutskie, John Wilson, Wes Traub, Charles Lam, Matthew Nelson

Author Affiliations +

Proceedings Volume 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter; 62653W (2006) https://doi.org/10.1117/12.672294
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

We describe the optical and mechanical design of a simple hand-held near infrared spectrograph constructed to produce observations of the spectrum of scrambled light from the Earth from aboard the International Space Station. Observing the Earth in this manner simulates the changing perspective on an extra-solar terrestrial planet observed as a point source by the Terrestrial Planet Finder. A Sensors Unlimited, Inc. SU320-M InGaAs(0.86 - 1.72μm) camera detects the dispersed spectrum and outputs NTSC video to be recorded and also permits frame grabbing. One of the three copies of the instrument is currently aboard the International Space Station. The optical and mechanical design was conceived and executed by graduate and undergraduate students at the University of Virginia.

Citation Download Citation

Srikrishna Kanneganti, Chan Park, Heather Hershley, Aaron Smith, Michael Skrutskie, John Wilson, Wes Traub, Charles Lam, and Matthew Nelson "A hand-held near-infrared slit spectrograph for Earth observations", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62653W (15 June 2006); https://doi.org/10.1117/12.672294

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