Other
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2350...56k&link_type=abstract
In NASA. Ames Research Center Proc. of the Workshop on Improvements to Photometry p 56-67 (SEE N85-17892 08-89)
Other
6
Photometry, Stellar Luminosity, Stellar Oscillations, Telescopes, Variations, Accuracy, Night Sky, Recommendations, Seismology, Transparence
Scientific paper
High speed photometric observations obtained with a single channel photometer on the South African Astronomical Observatory 0.5-m and 1.9-m telescopes are presented. It is argued that the dominant source of noise at periods near 5 minutes is sky transparency variation rather than scintillation. For bright stars this means that, at this period, increased telescope aperture does not improve photometric accuracy. It is claimed that ground based photometric observations cannot reach accuracies sufficient to study solar-type oscillations in other stars. Such observations must be made from space. Recommendations for improving ground based observations are made.
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