Page History

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1. 6 DoF rigid body misalignment of L1, L2, L3, and the Filters due to fabrication and installation errors.
2. 6 DoF rigid body displacements of L1, L2, L3, and the Filters as a function of
   1. zenith angle and camera rotation angle
      • See the fits table above. 
   2. camera soak temperature
      
      • See the fits table above. 
3. L1, L2, L3, and Filter figuring errors (constant shape errors due to fabrication)
4. L1,L2,L3, and Filter gravitational shape errors as a function of 
   1. zenith angle and camera rotation angle (seem to be negligible)
      • See the fits table above. 
      • Data on FEA grid also available: 
        • L1 1st surface and L1 2nd surface.
        • L2 1st surface and L2 2nd surface.
        • L3 1st surface and L3 2nd surface.
   2. camera soak temperature
      • See the fits table above. 
      • Data on FEA grid also available: 
        • L1 1st surface and L1 2nd surface.
        • L2 1st surface and L2 2nd surface.
        • L3 1st surface and L3 2nd surface.
5. Overall detector plane 6 DoF rigid body misalignment and displacement due to
   1. fabrication and installation errors (seem to be negligible)
   2. gravitational effects as a function of zenith angle (seem to be negligible)
      • See the fits table above. 
   3. gravitational effects as a function of camera rotation angle
      
      • See the fits table above. 
   4. thermal effects (detector plane thermal motions)
      • See the fits table above. 
6. Overall detector shape errors due to
   1. gravitational effects as a function of zenith angle (seem to be negligible)
      • See the fits table above. 
   2. gravitational effects as a function of camera rotation angle
      
      • See the fits table above. 
   3. thermal effects (detector plane thermal motions)
      • See the fits table above. 
7. Rafts 6 DoF rigid body misalignment and displacements due to
   1. fabrication and installation errors (sensor profile/height and raft mounting z-position repeatability, albeit current estimates for the later one seem to be small)
      • Cumulative sensor height distributions at 31 field positions across the focal plane (provided by AndyR, 9/3/14)
      • For example, file cumdist_rad0.379_az120.qdp is for field point (radius=0.379 degree, azimuth angle=120 degree).

      • 3 levels of alignment: Sensor, Sensor-on-Raft, and Raft-on-Grid.

      • This plot shows the cumulative distributions for each of 31 sample locations, color coded by radial distance.
      • Cumulative distributions provided in two-column format.
   2. gravitational effect as a function of zenith angle (seems to be negligible)
   3. thermal effects (seem to be negligible)
8. Raft shape errors due to
   1. fabrication/polishing errors (seem to be negligible)
   2. gravitational effect as a function of zenith angle (seems to be negligible)
   3. thermal effects (sensor package distortion due to cool down)
9. “PSF” broadening due to charge diffusion and CTE in the CCD and their idiosyncrasies 
10. Internal thermal seeing in the form of long exposure (15 seconds) OPD or PSF, as the function of zenith angle
11. Temperature and temperature distribution histories and/or statistics for the air inside the camera, as well as for the various components of the system: structure and glass.
12. 6 DoF rigid body displacements and shape distortions of L1, L2, L3, and the Filters due to uneven temperature distributions.

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