Contamination

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

Topics
- 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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