The Operational Environment of the Hipparcos Mission

Details The Operational Environment of the Hipparcos Mission The Operational Environment of the Hipparcos Mission

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ssrv..108..471v&link_type=abstract

Space Science Reviews, v. 108, Issue 3, p. 471-497 (2003).

Computer Science

Performance

5

Hipparcos, Satellite Dynamics, Space Astrometry

Scientific paper

We investigate links between the observational environment as experienced by the Hipparcos satellite and the performance of the spacecraft and payload instrumentation, with particular emphasis on finding out whether some of these effects may have been inadequately represented in instrument calibrations and could thus have affected the scientific results of the mission. Scan-coverage and radiation effects are primarily random effects with only some long-term systematics. However, long- (days to weeks) and short-term (hours) temperature variations reflected in the performance of some of the spacecraft instrumentation. It is shown that only a small sign of some long-term thermal variations could be detected in the payload instrumentation. These findings further limit the scope left for the occurrence of large-scale correlated errors in the Hipparcos astrometric data. On the other hand, a number of great circles were identified which showed a highly significant drift of the basic angle, which had not been detected in the preparation of the published data. The data from these circles may have, in some cases, led to, very localised, slightly anomalous results, in particular where stars are accidentally affected by two or more of such circles.

Affiliated with

Also associated with

No associations

Rating

The Operational Environment of the Hipparcos Mission does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Operational Environment of the Hipparcos Mission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Operational Environment of the Hipparcos Mission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1035858