Advanced Camera for Surveys ACS

ACS, installed in March 2002 during Servicing Mission 3B, provides HST with: (1) a deep, wide-field survey capability from the visible to near-infrared; (2) highresolution imaging from the near-ultraviolet to the near-infrared; and (3) solar blind far-UV imaging. The primary ACS design goal is to achieve a factor of 10 improvement in the discovery efficiency of new objects, compared with WFPC2, where discovery efficiency is defined as the product of imaging area and instrument throughput. ACS is composed of three cameras: (1) a wide-field camera (WFC), which covers the spectral range 350-1100 nm and a 202 x 202" region of the sky at an angular resolution of 0.049"; (2) a high-resolution camera (HRC), which covers the spectral range of 200-1,100 nm and a 29.1 x 26.1" region of the sky at an angular resolution of 0.028 x 0.025"; and (3) a solar blind camera (SBC), which covers the spectral range of 115-170 nm, and a 34.6 x 30.8" region of the sky at an angular resolution of 0.033 x 0.030".

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