A0 · Observational foundations
A 21-module path through a0 · observational foundations, in study order from foundations to the frontier.
Modules
- The Celestial Sphere
- Equatorial Coordinate System
- Horizontal and Ecliptic Coordinate Systems
- Precession, Nutation and Epochs
- Luminosity and Radiant Flux
- The Magnitude System
- Absolute Magnitude and the Distance Modulus
- Color Indices and Bolometric Corrections
- Photometric Systems and Filters
- Stellar Parallax and the Parsec
- The Cosmic Distance Ladder
- Standard Candles
- Optical Telescopes and Their Optics
- Detectors and CCDs
- Photometry and Signal-to-Noise
- Angular Resolution, Seeing and Diffraction
- Spectroscopy and Spectral Lines
- The Doppler Effect and Radial Velocity
- Redshift and Blueshift
- Atmospheric Extinction and Airmass
- Multi-Wavelength Observation and Atmospheric Windows