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Optical/infrared image and catalog products provided by the USNO. Astrometric catalogs include NOMAD, UCAC, USNO-B1, etc. Imaging products include digital scans of a number of the major Schmidt telescope surveys of the skies, along with the catalogs of astronomical objects created from those images. Very Long Baseline Interferometry (VLBI) is a technique used by radio astronomers and geodesists to determine the celestial and terrestrial reference frames and to predict the variable orientation of the Earth in three-dimensional space.
Astronomy — Naval Oceanography Portal
Bateaux autour du monde - Sail The World - L'Univers de la
Séminaire "Grande Croisière" avec J.Cornell Vous êtes en effet très nombreux à utiliser ce moyen de communication, votre famille et vos amis vous suivant ainsi au gré de vos navigations. L'objectif, est de rassembler tous les blogs au sein d'une plateforme commune à la navigation hauturière. Avec plusieurs avantages. D'abord, les blogs seront répertoriés selon le programme de navigation, le type de bateau et la nature de l'équipage. Ensuite, ils seront rattachés au profil du navigateur STW, donc localisés et accessibles directement à partir de la carte sur le site stw.fr.Noonsite: The global site for cruising sailors
Noonsite aims to provide a one-stop website featuring essential information on all matters of interest to sailors planning an offshore voyage anywhere in the world, whether already underway or still in the preparatory stages Noonsite began as a culmination of Jimmy Cornell's books (World Cruising Handbook and World Cruising Routes) and his work on the global cruising scene for the last quarter of a century. It has since grown extensively thanks to constant updates from cruisers using the site, new cruising guides and organisations and magazines who provide updates such as the RCC Pilotage Foundation, OCC, SSCA, Cruising Compass, Sail-World.com, Caribbean Compass and Cruisers Network Online. Noonsite's main objective is to provide cruising sailors with comprehensive information regarding essential marine facilities in any port visited by yachts.