Photovoltaic system to microgeneration and photovoltaic systems, and the US UL4703 standard, in subject 4703 ""Photovoltaic Wire"". A solar tracking system tilts a solar panel throughout the day. Depending on the type of tracking system, the panel is either aimed directly at the sun or the brightest area of a partly clouded sky. Trackers greatly enhance early morning and late afternoon performance, increasing the total amount of power produced by a system by about 20–25% for a single axis tracker and about 30% or more for a dual axis tracker, depending on latitude. Trackers are effective in regions that receive a large
Mir Docking Module experiments were installed on the docking module during STS-76, and retrieved during STS-86. Mir Docking Module The Stykovochnyy Otsek (, ), GRAU index 316GK, otherwise known as the "Mir" docking module or SO, was the sixth module of the Russian space station "Mir", launched in November 1995 aboard the . The module, built by RKK Energia, was designed to help simplify space shuttle dockings to "Mir" during the Shuttle-"Mir" programme, preventing the need for the periodic relocation of the "Kristall" module necessary for dockings prior to the compartment's arrival. The module was also used to transport two new photovoltaic arrays