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| Paper: |
A Queriable Repository for HST Telemetry Data, a Case Study in using Data Warehousing for Science and Engineering |
| Volume: |
145, Astronomical Data Analysis Software and Systems VII |
| Page: |
367 |
| Authors: |
Pollizzi, J. A.; Lezon, K. |
| Abstract: |
The Hubble Space Telescope (HST) generates on the order of 7,000 telemetry values, many of which are sampled at 1Hz, and with several hundred parameters being sampled at 40Hz. Such data volumes would quickly tax even the largest of processing facilities. Yet the ability to access the telemetry data in a variety of ways, and in particular, using ad hoc (i.e., no a priori fixed) queries, is essential to assuring the long term viability and usefulness of this instrument. As part of the recent NASA initiative to re-engineer HST's ground control systems, a concept arose to apply newly available data warehousing technologies to this problem. The Space Telescope Science Institute was engaged to develop a pilot to investigate the technology and to create a proof-of-concept testbed that could be demonstrated and evaluated for operational use. This paper describes this effort and its results. |
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