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All-Sky Monitor (ASM) ○´｜Definition｜1st｜20260908175945-00-⌔
Rossi X-ray Timing Explorer - Wikipedia#All-Sky_Monitor_(ASM)
All-Sky Monitor (ASM)
The All-Sky Monitor (ASM) provided all-sky X-ray coverage, to a sensitivity of a few percent of the Crab Nebula intensity in one day, in order to provide both flare alarms and long-term intensity records of celestial X-ray sources.1 The ASM consisted of three wide-angle shadow cameras equipped with proportional counters with a total collecting area of 90 cm (14 sq in). The instrumental properties were:23
- Energy range: 2–12-keV;
- Time resolution: observes 80% of the sky every 90 minutes;
- Spatial resolution: 3’× 15’;
- Number of shadow cameras: 3, each with 6° × 90° FoV;
- Collecting area: 90 cm (14 sq in);
- Detector: Xenon proportional counter, position-sensitive;
- Sensitivity: 30 mCrab.
It was built by the CSR at Massachusetts Institute of Technology. The principal investigator was Dr. Hale Bradt.
Printed 2026-09-08.
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Link to original Footnotes
“Experiment: All-Sky Monitor (ASM)”. NASA. 28 October 2021. Retrieved 28 November 2021. This article incorporates text from this source, which is in the public domain. ↩
“All-Sky Monitor (ASM)”. Heasarc.gsfc.nasa.gov. 4 February 2002. Retrieved 3 February 2012. This article incorporates text from this source, which is in the public domain. ↩
“The RXTE All Sky Monitor Data Products”. NASA. 26 August 1997. Retrieved 28 November 2021. This article incorporates text from this source, which is in the public domain. ↩
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