Instability Theories

• Troubleshooting has Confirmed that Optical Bench is not Isolated from Enclosure (XYZ Fittings should Isolate Bench)

  • This Anomalous Behavior May Cause/Contribute to All Phenomena through the Following Mechanisms:
    • Enclosure Shape Change Transmits Loads to Optical Bench
    • TBF/Dolly CTE Effects Load Enclosure which Load Bench
    • Optical Bench CTE Expansion Results in Bench Bending

• Other Effects Which May be Contributing to Instability:

  • Heat Pipe CTE Expansion Imparts Loads to Optical Bench
  • Localized CTE Effects in Detector Housings & Other Components Expanding/Contracting CCD Heat Pipes Impart Load to CCDs and Optical Bench