Difference between revisions of "USNO (US Naval Observatory)"
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| − | ''The United States Naval Observatory'' (USNO) provides a wide range of [[astronomical]] data and products, and serves as the official [[source]] of [[time]] for the [ | + | ''The United States Naval Observatory'' (USNO) provides a wide range of [[astronomical]] data and products, and serves as the official [[source]] of [[time]] for the [https://en.wikipedia.org/wiki/US_Department_of_Defense U.S. Department of Defense] and a standard of time for the entire [[United States]]. |
USNO products support activities in the following areas: | USNO products support activities in the following areas: | ||
| − | *[ | + | *[https://www.usno.navy.mil/USNO/astrometry Astrometry] |
Integrated Image and Catalog Archive Service, star catalogs, fundamental reference frames, space astrometry. | Integrated Image and Catalog Archive Service, star catalogs, fundamental reference frames, space astrometry. | ||
| − | *[ | + | *[https://www.usno.navy.mil/USNO/resolveuid/e822efe3dfd1eee4945892aecee89d84 Astronomical Applications] |
Astronomical data calculators (e.g., rise/set times, Moon phase, etc.), information on astronomical phenomena and related topics, astronomical and navigational almanacs, software products. | Astronomical data calculators (e.g., rise/set times, Moon phase, etc.), information on astronomical phenomena and related topics, astronomical and navigational almanacs, software products. | ||
| − | *[ | + | *[https://www.usno.navy.mil/USNO/resolveuid/9c9003eb6e8df44b1d5d70a92f915ec5 Earth Orientation] |
Daily, weekly, and long-term EO products (e.g. IERS Bulletin A), GPS-based products (rapids, ultra-rapids, UTGPS), VLBI-based products, background information, technical and scientific publications and software. | Daily, weekly, and long-term EO products (e.g. IERS Bulletin A), GPS-based products (rapids, ultra-rapids, UTGPS), VLBI-based products, background information, technical and scientific publications and software. | ||
| − | *[ | + | *[https://www.usno.navy.mil/USNO/resolveuid/da5b8c5e513f3ba470e271a6cc94eff7 Precise Time] |
USNO Master Clock, Network Time Protocol (NTP) servers, web-based time synchronization, GPS timing products and services, Two-Way Satellite Time Transfer, and Loran-C timing products. | USNO Master Clock, Network Time Protocol (NTP) servers, web-based time synchronization, GPS timing products and services, Two-Way Satellite Time Transfer, and Loran-C timing products. | ||
| − | *[ | + | *[https://www.usno.navy.mil/USNO/resolveuid/fe4d1d1cb4ae96d394f8d14338bb4cc0The James M. Gilliss Library] |
USNO's library holds one of the most complete collections of astronomical literature in the world. | USNO's library holds one of the most complete collections of astronomical literature in the world. | ||
[[Category: Astronomy]] | [[Category: Astronomy]] | ||
[[Category: Cosmology]] | [[Category: Cosmology]] | ||
Latest revision as of 02:43, 13 December 2020
The United States Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Department of Defense and a standard of time for the entire United States.
USNO products support activities in the following areas:
Integrated Image and Catalog Archive Service, star catalogs, fundamental reference frames, space astrometry.
Astronomical data calculators (e.g., rise/set times, Moon phase, etc.), information on astronomical phenomena and related topics, astronomical and navigational almanacs, software products.
Daily, weekly, and long-term EO products (e.g. IERS Bulletin A), GPS-based products (rapids, ultra-rapids, UTGPS), VLBI-based products, background information, technical and scientific publications and software.
USNO Master Clock, Network Time Protocol (NTP) servers, web-based time synchronization, GPS timing products and services, Two-Way Satellite Time Transfer, and Loran-C timing products.
USNO's library holds one of the most complete collections of astronomical literature in the world.
