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