The Advanced Camera for Surveys The Johns Hopkins University

Optical Stability

Authors: Pam Sullivan, William Jon McCann

Detector: WFC, HRC, SBC

Table of Contents

  1. Table of Contents
  2. Instability Introduction
  3. Coronagraph Motion w/Orientation & Holding Fixture Changes
  4. Instability Theories
  5. Introduction to Data
  6. March 22: Initial Identification of Anomaly on HRC
  7. March 30: Verify Reproduce-ability & Correlation w/WFC
  8. April 13 AM: Test Effect when ACS is Suspended
  9. April 13 PM: Test Effect when ACS Held in Dolly/Diamond
  10. April 14: Test Effect when ACS Held in Dolly/Square
  11. April 15 AM: Compare Dolly/Diamond Motion when HPs Disconnected
  12. April 15 PM: Compare Dolly/Square Motion when HPs Disconnected
  13. April 16: Compare TBF/Diamond Motion when HPs Disconnected
  14. May 7: Measure Thermal Stability Effect on SBC
  15. June 2: Measure Stability with Aperture Down/Y-Fitting Free
  16. June 3: Measure Stability with Radiator Panel Unbolted
  17. June 4: Measure Stability with Radiator Panel Rebolted
  18. June 7: Test Rolling Effect Theories
  19. June 9: Relieve Heat Pipe Installation Stress & Loosen ASCS Bolts
  20. June 10: Re-Bolt ASCS Interface Plate
  21. June 11: Monitor Stability w/o Changing Detector or Chiller State
  22. June 14: Monitor Stability w/Room Temperature Change
  23. June 17: Compression Test to Verify Presence of Y-Fitting "Stiction"
  24. June 18: Repeat Compression Test for Repeatability
  25. June 21 AM: Compression Test with ACS On to Correlate Spot Motion
  26. June 21 PM: Compression Test with ACS On to Correlate Spot Motion
  27. June 23: Aborted Baseline & TBF Temperature Change Test
  28. June 24: Baseline Stability in TBF for Comparison to RASHOMS
Appendices:

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Last updated 21 December 2001 10:44:00
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