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
    

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