Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sass...27...83b&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
Detection of short time interval variations of visible light in solar spectra may be a possible method for detecting gravitational waves.
Aim: Design and build a spectrometry system capable of detecting 0.15 mÅ shifts in the central frequency of solar absorption lines captured at 1-200 fps.
Design: A coelostat was built using a 12" diameter flat primary mirror on a computer controlled tracking mount and a static 12" flat secondary cold mirror. Reflected light enters a horizontally mounted 10" diameter Schmidt-Cassegrain telescope. Emerging light passes through an Iodine vapor cell providing a local spectral reference and then into a 25-micron air slit of a 4 meter focal length spectrometer with 3,600 l/mm grating. Spectra are recorded with a 640x480x16 bit monochrome video camera and analyzed using the MIDAS astronomical software.
Construction completion date: May 2008.
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