Page History

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Members
Eric Miller (chair, Suzaku, Astro-H)
Andy Beardmore (Swift)
Larry David (Chandra)
Tadayasu Dotani (Astro-H)
Megan Eckart (Astro-H SXS)
Michael Freyberg (eROSITA)
Terry Gaetz (Chandra)
Catherine Grant (Chandra)
Kenji Hamaguchi (Suzaku)
Maurice Leutenegger (Astro-H SXS)
Herman Marshall (Chandra)
Steve O'Dell (Chandra)
Paul Plucinsky (Chandra)
Steve Sembay (XMM-Newton EPIC)
Doug Swartz (Chandra)
Masahiro Tsujimoto (Suzaku, Astro-H)
Cor de Vries (XMM-Newton RGS)
Qazuya Wada (Suzaku)

Topics
(with thanks to Herman M., Michael F., and Doug S.)
- comparison among instruments and missions
  - chemical composition
  - time dependence
  - spatial dependence (
  Topics from Herman:
  - Constraints on chemical composition and variation among spacecraft.
  - The variety of time dependences that are expected and observed.
  - Spatial variations on micron to cm scales.)
  - Contamination mitigation (for current and future missions).
- Topics from Michael:
  - where contamination is observed, along with environmental data like temperature (maybe pressure)
  - where the coldest surface is located
  - lessons learnt, recommendations on design, procurement, procedures, etc.
  - any ideas about composition of contaminant
  - time dependance (maybe special events ...)
  - how it affects science data (what celestial sources are proper monitoring targets)

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Meetings
Reference Materials
- XSPEC contamination model hcnofcol: hcnofcol.tar.gz
  allows composition to be specified in column densities rather than with respect to H (a la varabs)
  see the included README file for parameters and installation instructions

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