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Observation Setup Information

• LETG/ACIS-S Obscat parameters -- Choosing pointing offsets and subarrays
• Spectrum Visualization Tool -- LETG/ACIS and HETG/ACIS

LETGS Description

• Complete Proposers' Observatory Guide (html, pdf)
  • Chapter 9: LETG (html)
  • Chapter 7: HRC detector (html)
  • Chapter 6: ACIS detector (html)

Calibration and Performance Issues

• Calibration Overview and Status -- Updated July 2012
• Calibration Review/Workshop Presentations
• Higher-Order Diffraction Efficiencies
• HRC-S
  • LETG/HRC-S Effective Area and Time-dependent HRC-S QE
    • HRC-S voltage increase (Mar 2012) -- to restore QE and gain
  • Degap Map
    • Event Position Errors Near the Aim Point -- Feb 2012
  • Dispersion Relation and Latest corrections
  • HRC-S Gain Map and LETG Background Filter
  • Time-Dependent Gain
    • HRC-S voltage increase (Mar 2012) -- New gain maps released in CALDB 4.5.1 in July 2012
    • See Section 4 (pp. 12-27) of the 2009 Gain map report.
    • There is also older work from 2003.
• ACIS-S
  • LETG/ACIS-S Carbon K-edge analysis

Analysis Software

• CIAO
• PINTofALE -- Contributed spectral analysis software

Related

• "Monte Carlo Processes for Including Chandra Instrument Response Uncertainties in Parameter Estimation Studies" (pdf)
• "On the Relevance of Compton Scattering for the Soft X-ray Spectra of Hot DA White Dwarfs" (pdf)

Last modified: 07/24/12

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The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2012. All rights reserved.