Abstract
ABSTRACT Digital reduction of speckle interferometry data for the K2 III giant a Boo (Arcturus) has been done. Angular diameters of o': 019 i 0': 006 were obtained at 4200 A for a uniformly illuminated disk, and 0,027 i 0,010 for a highly limb-darkened disk. Arcturus is underresolved using the Kitt Peak National Observatory 4-meter telescope. The digital-reduction scheme described here proved ideal for studying such underresolved objects. A discussion of limitations of this technique is also provided. Key words: speckle interferometry - atmospheric seeing - resolution
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