A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site OBSERVATIONAL ASTRONOMY    • Absolute Astronomical Accelerometry    • absolute magnitude    • airglow    • Antoniadi scale    • aperture    • aperture synthesis    • apparent magnitude    • asterism    • astrometry    • astronomical extinction    • Bayer designation    • Big Dipper    • broadband photometry    • capture area    • circumpolar star    • comparator    • constellations    • dawn    • deep sky object    • disk    • filtergram    • Flamsteed number    • infrared astronomy    • interferometer    • light pollution    • limb    • Little Dipper    • magnitude scale    • naked-eye star    • noise    • Northern Cross    • occultation    • Orion's Belt    • radial velocity method    • radio astronomy    • seeing    • spectroscopy    • Square of Pegasus    • submillimeter band    • submillimeter wave astronomy    • Summer Triangle    • surface brightness    • Winter Hexagon    • Winter Triangle Related categories    • OBSERVATORIES AND TELESCOPES    • OPTICS AND OPTICAL PHENOMENA    • SPECTRA AND SPECTROSCOPY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP