Each pixel has a pair of detectors which are sensitive to orthogonal polarization modes. 2, 3 In total there are 768 pixels, 180 at 90 GHz and 588 at 150 GHz, with each pixel consisting of two bolometers that are sensitive to orthogonal polarization modes, for a total of 1536 detectors. The SPTpol camera consists of two types of pixels sensitive to either 90 or 150 GHz light. The primary science goal of SPTpol is to measure the polarization of the cosmic microwave background (CMB). In the austral summer of 2011/12, the SPT was equipped with a new polarization-sensitive camera, a com- bination that we will hereafter refer to as SPTpol. In this original survey, the SPT was used to measure the millimeter-wavelength sky in temperature at frequencies: 95, 150 and 220 GHz. 1 Construction on the SPT was finished in 2007, and from 2008-2011 the SPT completed a survey of ∼ 2500 deg 2 of sky at observing frequencies of 95, 150, and 220 GHz. The South Pole Telescope (SPT) is a 10-meter off-axis Gregorian telescope located at the NSF Amundsen-Scott South Pole Station in Antarctica. This control software collects and monitors data in real-time, and stores the data to disk for transfer to the United States for analysis. An overall control software system running on a separate control computer controls the DfMux boards, the cryostat and all other aspects of telescope operation. These autonomous boards control and read out data from the focal plane with on-board software and firmware. The bolometers are read out using 36 independent digital frequency multiplexing (DfMux) readout boards, each with its own embedded processors.

In the austral summer of 2011/12, the SPT was equipped with a new polarization-sensitive camera, which consists of 1536 transition-edge sensor bolometers. The South Pole Telescope is a 10-meter millimeter-wavelength telescope designed to measure anisotropies in the cosmic microwave background (CMB) at arcminute angular resolution. present the software system used to control and operate the South Pole Telescope.

Hardware for mac to control telescope