QUaD

QUaD

A photograph of the QUaD telescope inside its groundshield taken from a crane above the telescope.
Alternative names	QUEST at DASI
Part of	Amundsen–Scott South Pole Station
Location(s)	Antarctic Treaty area
Coordinates	89°59′29″S 44°30′00″W / 89.9914°S 44.5°W / -89.9914; -44.5Coordinates: 89°59′29″S 44°30′00″W / 89.9914°S 44.5°W / -89.9914; -44.5
Telescope style	cosmic microwave background experiment radio telescope
Location of QUaD
Related media on Wikimedia Commons
[edit on Wikidata]

QUaD,^[1] an acronym for QUEST at DASI, was a ground-based cosmic microwave background (CMB) polarization experiment at the South Pole. QUEST (Q and U Extragalactic Sub-mm Telescope) was the original name attributed to the bolometer detector instrument, while DASI is a famous CMB interferometry experiment credited with the first detection of CMB polarization. QUaD used the existing DASI mechanical infrastructure but replaced the DASI interferometric array with a bolometer detector at the end of a cassegrain optical system. The mount has housed the Keck Array since 2011.

See also[]

Wikimedia Commons has media related to QUaD.

• Cosmic microwave background radiation
• Cosmic microwave background experiments

References[]

External links[]

• http://www.stanford.edu/~schurch/quad.html
• http://find.spa.umn.edu/quad/

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