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Ucac4 catalogue

The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4) Table of contents 1) Introduction a) Overview b) Differences between various versions of. I/A UCAC4 Catalogue (Zacharias+, ). The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4) Zacharias N., Finch C.T., Girard T.M. 1. I/A/out, Fourth U.S. Naval Observatory CCD Astrograph Catalog ( rows). see the UCAC4 document, and the the fix for high proper motion stars.

C2A can read the native version of the UCAC4 catalogue (Fourth U.S. Naval Observatory CCD Astrograph Catalogue). UCAC4 is a compiled, all-sky star catalog. 3 Mar The UCAC4 star catalog was published by USNO in It include millions stars to magnitude UCAC4 is largely based on UCAC3. UCAC4 is a compiled, all-sky star catalog covering mainly the 8 to 16 magnitude range in a single bandpass between V and R. Positional errors are about 15 to.

UCAC4 Catalogue. The UCAC4 Stellar Catalog is a catalogue of ,, stars covering the entire sky from to +90 degrees in declination, down to about. 26 Dec Astrograph observations have been supplemented for bright stars by FK6, Hipparcos and Tycho-2 data to compile a UCAC4 star catalog. Distribution of stars in the USNO-A catalog (Source: USNO) After finishing the UCAC 4 catalog, the USNO started obervations for a new, improved star.

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