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How Bright Is the Kitt Peak Night Sky? Revisited (1Jun92) (from KPNO, NOAO Newsletter No. 30, 1 June 1992) We are once again trying to monitor the brightness of the night sky over Kitt Peak, this time using observers' CCD frames of Landolt standards. The work is being done by Henry Roe, a high school student from Tucson who is working part-time for NOAO. Henry is a former winner of an NOAO prize for a project in astronomy at the Southern Arizona Regional Science Fair. We are collecting observations of Landolt standards to use to monitor sky brightness. If you are willing to contribute data to this program, please contact Caty Pilachowski. The procedure is simple. If you observe on a night you judge to be photometric, and if you observe sufficient Landolt standards in U, B, V, R, or I filters to determine the extinction, we would appreciate receiving a copy of that night's data (a KPNO T-tape would be great!). We prefer data which has already had bias and flat-field calibrations applied to it. We only need the observations of the Landolt standards and will not use the data for any purpose other than to monitor sky conditions. Caty Pilachowski, Henry Roe
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