The Dark Matter Telescope

Details The Dark Matter Telescope The Dark Matter Telescope

2000-05-18

arxiv.org/abs/astro-ph/0005381v2

Astronomy and Astrophysics

Astrophysics

in-press version with additions; to appear in proceedings of the Dark Matter 2000 conference (Santa Monica, February 2000) to

Scientific paper

Weak gravitational lensing enables direct reconstruction of dark matter maps over cosmologically significant volumes. This research is currently telescope-limited. The Dark Matter Telescope (DMT) is a proposed 8.4 m telescope with a 3 degree field of view, with an etendue of 260 $(m. degree)^2$, ten times greater than any other current or planned telescope. With its large etendue and dedicated observational mode, the DMT fills a nearly unexplored region of parameter space and enables projects that would take decades on current facilities. The DMT will be able to reach 10-sigma limiting magnitudes of 27-28 magnitude in the wavelength range .3 - 1 um over a 7 square degree field in 3 nights of dark time. Here we review its unique weak lensing cosmology capabilities and the design that enables those capabilities.

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