Computer Science – Performance
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21832814a&link_type=abstract
American Astronomical Society, AAS Meeting #218, #328.14; Bulletin of the American Astronomical Society, Vol. 43, 2011
Computer Science
Performance
Scientific paper
The Advanced Spectral Library (ASTRAL) is a Hubble Space Telescope (HST) Cycle 18 (2010-2011) Large Treasury Project, whose aim is to collect high-quality ultraviolet echelle spectra of bright stars utilizing the high-performance Space Telescope Imaging Spectrograph (STIS). In Cycle 18, ASTRAL focuses on eight iconic late-type objects -- all well-known bright stars with vaguely unpronounceable names like Procyon and Betelgeuse -- and will devote 146 HST orbits for the purpose. The objective is to record each of the targets with broad uninterrupted UV coverage (1150-3100 Angstroms) at the highest signal-to-noise and highest spectral resolution achievable within the available spacecraft time, and given a variety of observing constraints. The broad ultraviolet coverage will be achieved by splicing together echellegrams taken in multiple FUV and NUV prime echelle settings of STIS. The observing strategy was designed to maximize S/N, ensure accurate wavelength scales, and preserve the radiometric level of the UV spectral energy distribution. This is a progress report on the observational status of ASTRAL. Up-to-date information can be found at the project website:http://casa.colorado.edu/ ayres/ASTRAL/.
Supported by grants from the Space Telescope Science Institute, operated by AURA for NASA.
Ayres Thomas R.
Co-Investigators ASTRAL
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