For the purchase of a solid-state photometer and computer interface for its 0.4-meter telescope. This telescope was being put into operation and was to join the 0.6-meter telescope of the Observatory in long-term monitoring projects primarily connected with emission B and other peculiar stars, both by resident and visiting observers. The monitoring of Be stars is particularly of interest due to the complexity of light variations that these stars undergo as well as the multiplicity of explanations suggested by such behavior.
Grant Recipients in 1989
Grant Recipients $6,340
To purchase a disk drive for use in reducing data from a large-scale CCD imaging program to search for eclipsing variable stars in globular clusters. A firm knowledge of the binary frequency in these stellar systems is important in understanding their dynamical and chemical evolution in detail, as well as to constrain models explaining the existence of a variety of unusual stars – in particular, blue stragglers – that are found in a number of clusters.
For the construction of a small support structure to mount a state of the art, near-infrared (1-2.5µm) two-dimensional array detector at the Cassegrain focus of the Wyoming Infrared Observatory’s 2.3 meter infrared telescope. Such an arrangement would allow powerful speckle interferometric imaging techniques to systematically produce high spatial resolution (< 100 milli-arcseconds per pixel), two dimensional images. Additionally, the system is to be used in a unique experiment, simultaneously imaging with high spatial resolution at both optical (using the speckle camera of the Harvard-Smithsonian Center for Astrophysics) and near-infrared wavelengths.