The Next Generation Space Telescope

Details The Next Generation Space Telescope The Next Generation Space Telescope

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaus..204..467s&link_type=abstract

The Extragalactic Infrared Background and its Cosmological Implications, Proceedings of IAU Symposium #204, held 15-18 August 20

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The Next Generation Space Telescope (NGST) will be an 8 m deployable telescope, radiatively cooled to around 30 K and diffraction limited at 2 μm, operating at the Sun-Earth Lagrange point L2. It will be built by a partnership of NASA, ESA, and the CSA (Canadian Space Agency). The camera sensitivity should be limited by the zodiacal light for wavelengths < 10 μm. The main scientific objectives are the study of the origin and evolution of galaxies, stars, and planets, beginning with the first luminous objects to form from the Big Bang. Other objectives include studies of dark matter, supernovae, the intergalactic medium, gamma ray bursts, star ages, and exobiology. The telescope will be operated like the Hubble Space Telescope by the Space Telescope Science Institute, with all observing programs selected from proposals. The NGST scientific requirements originated with the Dressler ``HST and Beyond" report of 1996. The instruments recommended by the ASWG (Ad Hoc Science Working Group) include 1) a wide field near IR camera with an 8K2 detector array covering 0.6 to 5 μm, 2) a multi-object near IR spectrograph capable of simultaneously observing >100 objects with a resolution of R = λ/δλ = 1000, and 3) a combined mid-IR camera and spectrograph from 5 to 27 μm, with a spectral resolution of R=3000.

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