April 16: Compare TBF/Diamond Motion when HPs Disconnected

• Configuration:

  • ACS: CCD Heat Pipes Disconnected at IF Plate
  • Mounting: ACS in TBF in Diamond
  • Cooling: Chillers
  • Optical Source: HRC: Coronagraph
  • Starting Temp: Ambient, at start of day

• Figures:

  • Stability track: ( GIF, Postscript )

• Results:

  • Warm-up effect of ~1.5 pixels seen
    • Direction of motion similar to that with heat pipes connected
  • Chillers-on seemed to restart warm-up trend which had stalled for ~15 minutes
  • Chillers off had no apparent effect
  • Motion correlated with TEC on/TEC off repeated