Compass has a half-life of only about 12 years, so a compass that contains 120 mCi of tritium when new will contain only 60 when it is 12 years old, 30 when it is 24 years old, and so on. Consequently, the illumination of the display will fade. Mariners' compasses can have two or more magnets permanently attached to a compass card, which moves freely on a pivot. A "lubber line", which can be a marking on the compass bowl or a small fixed needle, indicates the ship's heading on the compass card. Traditionally the card is divided into thirty-two points
COMPASS-2 to update the Kepler elements weekly from Celestrak, a free of charge service for tracking satellites in space. The structure of the software will be modular giving the chance to work and improve on the components separately. Key features are: In addition to the ground station in Aachen, many private amateur radio stations joined us as backup stations during the mission operation of COMPASS-1. The COMPASS-2 Team also will encourage the stations to participate loading data and decoding Morse code from COMPASS-2. The CDHS is the main board of the COMPASS-2 Satellite. It is responsible for managing all general and