射电-光学参考链路
收藏国家地球系统科学数据中心2017-07-17 更新2024-03-04 收录
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https://www.geodata.cn/data/datadetails.html?dataguid=23490513916145&docId=27238
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资源简介：
Between 1997 and 2004 several observing runs were conducted mainly
with the CTIO 0.9m to image ICRF counterparts (mostly QSOs) in order
to determine accurate optical positions. Contemporary to these deep
CCD images the same fields were observed with the USNO astrograph in
the same bandpass. These provide accurate positions on the
Hipparcos/Tycho-2 system for stars in the 10 to 16 magnitude range
used as reference stars for the deep CCD imaging data.
提供机构：
中国科学院国家天文台
创建时间：
2013-07-17
