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  • HSRED Version 2.0 Released

    We are pleased to release version 2.0 of HSRED, a reduction package for Hectospec data. This update incorporates a number of significant improvements provided by the Telescope Data Center at SAO.  Key changes include new support for the 600-line grating, fine-tuning the wavelength calibration, improved cosmic ray rejection and sky subtraction, support for offset sky observations, a model correction for the red light leak present in Hectospec data, and automatic correction for the A- and B-band telluric lines.

  • Variability Discovered in Star System

    Arizona astronomers have used the MMT's adaptive optics system and the ARIES instrument to discover significant changes in the appearance of the variable binary star system UY Aurigae since 1994. The new spectrum is only the second ever published for one of the stars. The changes in brightness indicate increased interaction between the stars and their circumstellar disks. More information can be found here.