Mathematics – Logic
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..339...79l&link_type=abstract
Observing Dark Energy, ASP Conference Series, Vol. 339, Proceedings of a meeting held 18-20 March 2004 in Tucson, Arizona. Edit
Mathematics
Logic
1
Scientific paper
The Dark Energy Space Telescope (DESTINY) is an all-grism NIR 1.8-m survey camera optimized to return richly sampled Hubble diagrams of Type Ia and Type II supernovae (SN) over the redshift range 0.5 < z < 1.7 for determining cosmological distances, measuring the expansion rate of the Universe as a function of time, and characterizing the nature of the so-called ``dark energy" component of the Universe. SN will be discovered by repeated imaging of a 7.5-sq.-deg. area located at the north ecliptic poles. Grism spectra with resolving power λ/Δλ = R˜75 will provide broad-band spectrophotometry, redshifts, SN classification, and valuable time-resolved diagnostic data for understanding the SN explosion physics. This methodology features only a single mode of operation with no time-critical interactions, a single detector technology, and a single instrument. Although grism spectroscopy is slow compared with SN detection in any single broad-band filter for photometry, or to conventional slit spectra for spectral diagnostics, the multiplex advantage of being able to observe a large field of view simultaneously over a full octave in wavelength makes this approach highly competitive.
Destiny Science Team
Lauer Tod R.
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