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Paper: The WIYN Speckle Program: HIPPARCOS Binaries and Beyond
Volume: 338, Astrometry in the Age of the Next Generation of Large Telescopes
Page: 90
Authors: Horch, E.P.; van Altena, W.F.; Meyer, R.D.
Abstract: Since 1997, a program of speckle observations of binary stars has been in operation at the WIYN 3.5-m Telescope at Kitt Peak. In 2001, a new speckle camera called RYTSI, the RIT-Yale Tip-tilt Speckle Imager, was completed and has been used since that time. Since it collects speckle patterns on a bare (unintensified) CCD camera, RYTSI is capable of determining reliable magnitude differences of binary stars in addition to the precise relative astrometry for which speckle imaging is well-known. The WIYN observing program currently consists of follow-up observations of the HIPPARCOS Double Stars and other targets of occasional interest. The benefits of a sustained program for the mass-luminosity relation and detailed stellar evolution calculations, as well as binary statistics, will be discussed.
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