Advanced CCD Imaging Spectrometer
Illustration — Advanced CCD Imaging Spectrometer The Advanced CCD Imaging Spectrometer (ACIS), formerly the AXAF CCD Imaging Spectrometer, is an instrument built by a team from the Massachusetts Institute of Technology's Center for Space Research and the Pennsylvania State University for the Chandra X-ray Observatory. ACIS is a focal plane instrument that uses an array of charge-coupled devices. It serves as an X-ray integral field spectrograph for Chandra.
Also recorded as AXAF CCD Imaging Spectrometer · Charge Coupled Imaging Spectrometer · ACIS
Advanced CCD Imaging Spectrometer
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Illustration — Advanced CCD Imaging Spectrometer The Advanced CCD Imaging Spectrometer (ACIS), formerly the AXAF CCD Imaging Spectrometer, is an instrument built by a team from the Massachusetts Institute of Technology's Center for Space Research and the Pennsylvania State University for the Chandra X-ray Observatory. ACIS is a focal plane instrument that uses an array of charge-coupled devices. It serves as an X-ray integral field spectrograph for Chandra.
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wikidata · Q4686137 · wikipedia · Advanced CCD Imaging Spectrometer
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The instrument is capable of measuring both the position and energy of incoming X-rays. The CCD sensors of ACIS operate at -120 C and its filters at -60. It carries a special heater that allows contamination from Chandra to be baked off; the spacecraft contains lubricants, and the ACIS design took this into account in order to clean its sensors. Contamination buildup can reduce the instrument's sensitivity. Radiation in space is another potential danger to the sensor. This allows for a measurement of the level of contamination, if present, as well as any degree of charge transfer inefficiency.
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- 1.NASA Smithsonian Astrophysical Observatory. Science Instruments. 19 September 2013.
- 2.Roy, Steve. Chandra Advanced CCD Imaging Spectrometer (ACIS) update. NASA. 13 November 2003.
- 3.Grant, Catherine E. Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray. SPIE. 9144. 91443Q. 24 July 2014. 10.1117/12.2055652.
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