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Date and Time of the Query: 2019-05-19 T21:52:23 PDT
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For refcode 1998AJ....115..296H:
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NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1998AJ....115..296H New variables in the Sloan Digital Sky Survey calibration fields Henden, Arne A.; Stone, Ronald C. Abstract. The U.S. Naval Observatory 0.2 m Flagstaff Astrometric Scanning Transit Telescope was used to obtain astrometric information in 16 equatorial fields in support of the Sloan Digital Sky Survey. Each field is approximately 7.6 3.2 deg in size and was scanned about 10 times with overlapping CCD strip scans; star positions accurate to +/- 50 mas in each coordinate and magnitudes good to 0.011 mag were determined. As an ancillary project, this database was searched for new variables, and the results of that search are presented here. Approximately 1500 new variables have been discovered, and accurate coordinates for about 100 previously identified variables and suspected variables are given. Key words: VARIABLE STARS, ASTROMETRY, CHARGE COUPLED DEVICES, CEPHEID VARIABLES, ASTRONOMICAL PHOTOMETRY, HISTOGRAMS, INTERSTELLAR EXTINCTION
Retrieve 1602 NED objects in this reference.
Please click here for ADS abstract

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