Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sass...27..115v&link_type=abstract
The Society for Astronomical Sciences 27th Annual Symposium on Telescope Science. Held May 20-22, 2008 at Big Bear Lake, CA. Pub
Astronomy and Astrophysics
Astronomy
Scientific paper
Literature confirms the presence of rapid quasi periodic and periodic optical phenomena in accreting binary systems. These low intensity oscillations in the few Hz to KHz region are typically detected using fast photodiodes with the data recorded and later correlated. This paper investigates alternate real-time techniques using a low noise, high-speed photodiode and both a PC based FFT spectrum analyzer and a communications receiver for detection and analysis. Using a 14-inch Schmidt-Cassegrain telescope, detection is possible for objects of magnitude 7 or brighter over a frequency range of 10 Hz to 20 KHz where the phenomena modulation level is 1-2% or greater. Trial observations of the Sun during low activity periods indicate broad spectral components in the 50 Hz to 3 KHz range. The brief studies of the Sun and X Persei (HD 24534) indicate opportunities for future high frequency photometric investigation.
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