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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Chandra X-ray Observatory | 3/3 | https://en.wikipedia.org/wiki/Chandra_X-ray_Observatory | reference | science, encyclopedia | 2026-05-05T12:57:48.807471+00:00 | kb-cron |
== Instruments == The Science Instrument Module (SIM) holds the two focal plane instruments, the Advanced CCD Imaging Spectrometer (ACIS) and the High Resolution Camera (HRC), moving whichever is called for into position during an observation. ACIS consists of 10 CCD chips and provides images as well as spectral information of the object observed. It operates in the photon energy range of 0.2–10 keV. The HRC has two micro-channel plate components and images over the range of 0.1–10 keV. It also has a time resolution of 16 microseconds. Both of these instruments can be used on their own or in conjunction with one of the observatory's two transmission gratings. The transmission gratings, which swing into the optical path behind the mirrors, provide Chandra with high resolution spectroscopy. The High Energy Transmission Grating Spectrometer (HETGS) works over 0.4–10 keV and has a spectral resolution of 60–1000. The Low Energy Transmission Grating Spectrometer (LETGS) has a range of 0.09–3 keV and a resolution of 40–2000. Summary:
High Resolution Camera (HRC) Advanced CCD Imaging Spectrometer (ACIS) High Energy Transmission Grating Spectrometer (HETGS) Low Energy Transmission Grating Spectrometer (LETGS)
== Gallery ==
== See also ==
AGILE (satellite), an Italian orbital X-ray telescope Great Observatories program List of deep fields List of space telescopes List of X-ray space telescopes Lynx X-ray Observatory, possible successor NuSTAR Suzaku, a sister satellite originating from AXAF-S (spectrometer) X-ray astronomy
== References ==
== Further reading == Swartz, Douglas A.; Wolk, Scott J.; Fruscione, Antonella (April 20, 2010). "Chandra's First Decade of Discovery". Proceedings of the National Academy of Sciences of the United States of America. 107 (16): 7127–7134. Bibcode:2010PNAS..107.7127S. doi:10.1073/pnas.0914464107. PMC 2867717. PMID 20406906.
== External links ==
Chandra X-ray Observatory at NASA.gov Chandra X-ray Observatory at Harvard.edu Chandra X-Ray Center (CXC) at Harvard.edu Chandra X-ray Observatory at YouTube Chandra podcast (2010) by Astronomy Cast