Chandra Calibration Status

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Chandra Calibration Status

• Highlights from the Chandra Calibration Review
• New results on the HRMA effective area
• Updates to the ACIS contamination model
• Flux Cross-Calibration with Other X-ray Telescopes

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Proper Stellar Motions with Chandra
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Temperature-dependent ACIS gain corrections
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Recent HRMA Calibration Results
CALDB Version
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Optical depth of the contaminant at the Mn-L and
F-K complex on ACIS-S
Updates to the ACIS contamination Model
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External Calibration Source (ECS)
Courtesy of Dan McCammon
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External Calibration Source (ECS)
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External Calibration Source (ECS)
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External Calibration Source (ECS)
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Surface Roughness of ACIS Filter Contaminant
External Calibration Source (ECS)
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Effect of Surface Roughness on Measured Optical
Depths
External Calibration Source (ECS)
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Revised ACIS Contamination Model
CALDB
New
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The Coma Cluster

2009 CALDB
1999

2009 New
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LETG/ACIS-S Observation of Mkn 421
CALDB
New
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Flux Cross-Calibration with Other X-Ray
Telescopes
OVII OVIII Ne IX Ne X
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Simultaneous Chandra/XMM-Newton AGN Observations
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Additional AO-11 Calibration Observations

• A set of 5 LETG/ACIS-S observations of Mkn421
• A set of 4 observations of Abell 1795 on ACIS-I
  and ACIS-S
• Measure the C-K edge optical depth at the
  aim-point on S3 with a LETG/ACIS-S observation of
  Mkn421