2MASS 6X Merged Point Source Information Table

During the final months of 2MASS observatory operations, a campaign of targeted "long exposure" observations was carried out during times when no previously unscanned parts of...在2微米全天巡天（2MASS）天文台运行的最后数月期间，科研团队在无此前未被扫描区域的时段内，开展了针对性的“长曝光”观测计划。