the celestial sphere
- spherical geometry
- introduction
- the geometry of the sphere
- spherical trigonometry
- position on the earth's surface
- example problems
- the celestial sphere
- introduction
- coordinate systems
- the horizontal coordinate system
- the equatorial coordinate system
- the ecliptic coordinate system
- the galactic coordinate system
- timekeeping systems
- sidereal time
- solar time
- universal time
- the calendar
- example problems
- celestial mechanics
- ptolemy, copernicus and galileo
- kepler's laws
- planetary distances
- kepler's first law
- kepler's second law
- kepler's third law
- newton's laws
- newton's laws of motion
- newton's law of gravitation
- newton's derivation of kepler's laws
- orbital motion
- example problems
telescopes
- introduction
- telescope optics
- basic principles
- refractors
- reflectors
- catadioptric telescopes
- visual use of telescopes
- example problems
- telescope mountings
- equatorial mountings
- alt-azimuth mountings
- coudé and nasmyth
- tubes and trusses
- mirror mountings
- domes and sites
- seeing, transparency and extinction
- observatory sites
- dome design
©Vik Dhillon, 30th September 2009