Example image of eyePlorer eyePlorer map for 'Apparent magnitude': Brightness Earth Earth's atmosphere Measurement Hellenistic Greece Human List of brightest stars Telescope Visual perception Logarithmic scale Almagest Hipparchus Ptolemy Sun Norman Robert Pogson Polaris Inverse-square law Absolute magnitude Astronomical unit Light-year Parsec Flux Sirius Logarithm Eye Power law Stevens' power law Weber–Fechner law Monochrome UBV photometric system Ultraviolet Red dwarf Red giant Infrared Stellar classification Betelgeuse Photographic film Rigel Supergiant Photographic magnitude General relativity 11 Aquarii 11 Ursae Minoris 15 Sagittae 16 Lyrae 2 Ursae Minoris 24P/Schaumasse 25 Scorpii 33P/Daniel 42 Draconis
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