Observational Astronomy

Observational astronomy studies celestial objects through the measurement and analysis of the radiation they emit or reflect.

Astronomical quantities mentioned in this module include absolute and apparent magnitude as well as star luminosity.

Links:

1. Wikipedia — Observational Astronomy

Contents:

• Absolute magnitude from apparent magnitude and distance
  • absolute_magnitude
  • apparent_magnitude
  • distance
  • distance_constant
  • law
• Change in apparent magnitude from distance
  • first_apparent_magnitude
  • second_apparent_magnitude
  • first_irradiance
  • second_irradiance
  • law
• Luminosity of star from absolute magnitude
  • luminosity
  • absolute_magnitude
  • law
• Ratio of luminosities from ratio of masses of stars
  • first_mass
  • second_mass
  • first_luminosity
  • second_luminosity
  • law