Algedi
/ / / Algedi / Al Giedi /
Titus -Bode law
/ / / Titus -Bode law / /
Vaucouleur low
/ / / Vaucouleur low / /
Hubble law
/ / / Hubble law / /
Qiblah
/ / / Qiblah / /
Bolometric magnitude
/ / / Bolometric magnitude / /
Apparent Magnitude
/ / / Apparent Magnitude / /
Angular Resolution
/ / / Angular Resolution / /
Magnification power
/ / / Magnification power / /
Absolute magnitude
/ / / Absolute magnitude / /
Airy disk
/ / / Airy disk / /
Accretion disk
/ / / Accretion disk / /
Reddenning
/ / / Reddenning / /
South celestial pole
/ / / South celestial pole / /
Celestial pole
/ / / Celestial pole / /
Polar Aligment
/ / / Polar Aligment / /
Angular Diameter
/ / / Angular Diameter / /
black drop
/ / / black drop / /
Regulus
آلفا شیر / / / Regulus / /
Kepler's Laws
/ / / Kepler's Laws / /
cygnus
ماکیان / قو / / cygnus / swan /
