Long-slit imaging dual-order spectrograph: LIDOS

Details Long-slit imaging dual-order spectrograph: LIDOS Long-slit imaging dual-order spectrograph: LIDOS

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4854..385m&link_type=abstract

Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation. Edited by J. Chris Blades, Oswald H. W. Siegmund. P

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We report on the design and fabrication of a long-slit imaging dual order spectrograph to be launched on a sounding rocket-borne telescope. The instrument's purpose is to investigate faint emissions of extended astronomical regions near bright objects on intermediate angular scales (3 - 300") and with moderate spectral resolution (≈3 Å) in the 900 - 1650 Å bandpass. The design relies upon a toroidally figured holographically ruled grating to provide astigmatism correction in both orders and an intrinsically low scattered light level. The use of both orders doubles the collection efficiency, nearing that achievable with a blazed grating, while simultaneously providing a system redundancy that is desirable in the high risk environment of space-based astronomy missions. We will discuss the predicted instrument performance and present preliminary pre-flight calibration data.

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