Cluster Exchange Format (CEF) is aself-documenting ASCII format designed for the exchange of data. There aretwo versions of CEF which are not totally compatible.
Cluster Exchange Format (CEF), version 1, isa self-documenting ASCII format designed for the exchange of data. Themetadata contains information compatible with the ISTP recommendations forCDF.
Cluster Exchange Format (CEF), version 2, isa self-documenting ASCII format designed for the exchange of data andintroduced for Cluster Active Archive. Compared to version 1, the metadatadescription o
f vectors and tensors is different.
In astronomy, a celestial coordinate system is a coordinate system for mapping positions on the celestial sphere. There are different celestial coordinate systems each using a system of spherical coor
dinates projected on the celestial sphere, in analogy to the geographic coordinate system used on the surface of the Earth.
The point of the sky, north or south, where the projection of the Earth's axis of rotation intersects the celestial sphere. They are at 90° relative to the celestial equator. Because of precession, th
e celestial poles describe a circle around the ecliptic's poles every 25,800 years.