美国变星观测者协会测光全天巡天第十次数据发布(APASS DR10)
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美国变星观测者协会测光全天巡天第十次数据发布(APASS DR10)达到了一个新的里程碑。这个版本的数据有12亿颗星等在7<V<17范围内的恒星,它们的星等已经在B、V、u'、g'、r'、i'、z'波段进行了校准。APASS旨在为天空中的任何地方和几乎所有的CCD图像提供校准的测光。与UCAC或GAIA等天体测量星表非常相似,APASS提供了对数据进行测光定标的能力,而无需使用全天空测光。使用DR10,天空覆盖率约为99%。仍然有一些缺失的区域,主要在赤纬20度以上的北方天空。
The 10th Data Release of the American Association of Variable Star Observers' Photometric All-Sky Survey (APASS DR10) has reached a new milestone. This release contains data for 1.2 billion stars with V-band magnitudes ranging from 7 to 17, whose photometry has been calibrated across the B, V, u', g', r', i', and z' bands. APASS is designed to provide calibrated photometric services for any position in the sky and nearly all CCD imaging data. Similar to astrometric catalogs such as UCAC or Gaia, APASS enables photometric calibration of datasets without relying on full-sky photometric observations. With DR10, the sky coverage reaches approximately 99%. There still exist some missing regions, primarily in the northern sky with declinations above 20 degrees.




