AST 1 Coordinate systems

AST 1.1 Coordinate systems: General introduction
author: Rita Gautschy
reviewer: Frank Prendergast
keywords: geographical coordinates on Earth, different origins of coordinate systems, base plane and great circles
license: CC BY-NC 4.0 International

AST 1.2 Horizontal coordinate system
author: Rita Gautschy
reviewer: Frank Prendergast
keywords: local horizon, zenith and nadir, azimuth, elevation and zenith distance, advantages and disadvantages of the horizontal coordinate system
license: CC BY-NC 4.0 International

AST 1.3 Equatorial coordinate system
author: Rita Gautschy
reviewer: Frank Prendergast
keywords: base circle, poles, declination, fixed equatorial system, moving equatorial system, main use
license: CC BY-NC 4.0 International

AST 1.4 Ecliptic coordinate system
author: Rita Gautschy
reviewer: Frank Prendergast
keywords: ecliptic, obliquity of the ecliptic, zodiac, ecliptic longitude and atitude, variable zero point, epoch, main use of the ecliptic coordinate system
license: CC BY-NC 4.0 International

AST 1.5 UTM system
author: Rita Gautschy
reviewer: Stanislaw Iwaniszewski
keywords: UTM system, conversion, conversion sheet
license: CC BY-NC 4.0 International