WF/PC INSTRUMENT SCIENCE REPORT 90-08:
WF/PC Internal Molecular Contamination During System TV Test
-D. Taylor, J Barengoltz, T. Jenkins, K. Leschly, and J. Triolo
February, 1991
Abstract excerpted from the report:
During a recent System Thermal-Vacuum (STV) test of the Wide Field/ Planetary Camera (WF/PC-1), instrumentation was added to characterize the internal molecular contamination using a temperature controlled Quartz Crystal Microbalance (TQCM) and several ultra-violet (UV) light sources. Correlation of this data with detailed temperature data for various elements in the WF/PC-1 provided significant insight into the sources and the effect of extremely low levels of internal contaminants affecting the far UV instrument throughput. As a result, the WFPC design was modified to ensure on-orbit capability to temperature from -80 to 100 degrees C, and provide guidance for on-orbit operations during UV observations.
For a copy of the report, please contact help@stsci.edu.