English Transit instrument Cited by user ThePickleJuices on 24 Sep 2022 In astronomy, a transit instrument is a small telescope with extremely precisely graduated mount used for the precise observation of star positions.
English SECOR Cited by user Bender the Bot on 19 Aug 2019 SECOR (Sequential Collation of Ranges) was a series of small United States Armed Forces satellites launched in the 1960s for geodesy measurements that precisely…