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Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Observational_astronomy> . }

• AB_magnitude subject Category:Observational_astronomy.
• Absolute_magnitude subject Category:Observational_astronomy.
• Air_mass_(astronomy) subject Category:Observational_astronomy.
• Airglow subject Category:Observational_astronomy.
• Antoniadi_scale subject Category:Observational_astronomy.
• Aperture subject Category:Observational_astronomy.
• Apparent_magnitude subject Category:Observational_astronomy.
• Astronomical_interferometer subject Category:Observational_astronomy.
• Astronomical_optical_interferometry subject Category:Observational_astronomy.
• Astronomical_seeing subject Category:Observational_astronomy.
• Astronomical_spectroscopy subject Category:Observational_astronomy.
• Astronomical_survey subject Category:Observational_astronomy.
• Astronomy_on_Mars subject Category:Observational_astronomy.
• Atmospheric_refraction subject Category:Observational_astronomy.
• Averted_vision subject Category:Observational_astronomy.
• Background_(astronomy) subject Category:Observational_astronomy.
• Blink_comparator subject Category:Observational_astronomy.
• Bolometric_correction subject Category:Observational_astronomy.
• CfA_Redshift_Survey subject Category:Observational_astronomy.
• Coded_aperture subject Category:Observational_astronomy.
• Collimated_light subject Category:Observational_astronomy.
• Compton_scattering subject Category:Observational_astronomy.
• Coreshine subject Category:Observational_astronomy.
• Cosmic_background_radiation subject Category:Observational_astronomy.
• Cosmic_infrared_background subject Category:Observational_astronomy.
• Deep-sky_object subject Category:Observational_astronomy.
• ESTAR subject Category:Observational_astronomy.
• Earth-grazing_fireball subject Category:Observational_astronomy.
• Explorer_10 subject Category:Observational_astronomy.
• Extinction_(astronomy) subject Category:Observational_astronomy.
• Extraterrestrial_skies subject Category:Observational_astronomy.
• Far-infrared_astronomy subject Category:Observational_astronomy.
• Spectrograph subject Category:Observational_astronomy.
• Fizeau_interferometer subject Category:Observational_astronomy.
• Freeman_law subject Category:Observational_astronomy.
• Full_moon subject Category:Observational_astronomy.
• GLOBE_at_Night subject Category:Observational_astronomy.
• Gamma-ray_astronomy subject Category:Observational_astronomy.
• Gegenschein subject Category:Observational_astronomy.
• Geometric_albedo subject Category:Observational_astronomy.
• Granat subject Category:Observational_astronomy.
• Gravitational-wave_astronomy subject Category:Observational_astronomy.
• Great_Comet subject Category:Observational_astronomy.
• Gregorian_Tower subject Category:Observational_astronomy.
• Grey_atmosphere subject Category:Observational_astronomy.
• Guide_star subject Category:Observational_astronomy.
• Heliacal_rising subject Category:Observational_astronomy.
• High-energy_astronomy subject Category:Observational_astronomy.
• High_time-resolution_astrophysics subject Category:Observational_astronomy.
• History_of_X-ray_astronomy subject Category:Observational_astronomy.
• IACT subject Category:Observational_astronomy.
• Infrared_astronomy subject Category:Observational_astronomy.
• Infrared_excess subject Category:Observational_astronomy.
• Interferometry subject Category:Observational_astronomy.
• Interplanetary_scintillation subject Category:Observational_astronomy.
• Intrinsic_brightness subject Category:Observational_astronomy.
• Isoplanetic_patch subject Category:Observational_astronomy.
• Istituto_di_Radioastronomia_di_Bologna subject Category:Observational_astronomy.
• JPL_Small-Body_Database subject Category:Observational_astronomy.
• Las_Campanas_Redshift_Survey subject Category:Observational_astronomy.
• Light_pollution subject Category:Observational_astronomy.
• Limiting_magnitude subject Category:Observational_astronomy.
• Lockman_Hole subject Category:Observational_astronomy.
• Long-slit_spectroscopy subject Category:Observational_astronomy.
• Luminosity_distance subject Category:Observational_astronomy.
• Lunar_phase subject Category:Observational_astronomy.
• Magnitude_(astronomy) subject Category:Observational_astronomy.
• Malmquist_bias subject Category:Observational_astronomy.
• Michelson_stellar_interferometer subject Category:Observational_astronomy.
• MySky subject Category:Observational_astronomy.
• Naked_eye subject Category:Observational_astronomy.
• Night_sky subject Category:Observational_astronomy.
• Nuller subject Category:Observational_astronomy.
• Observation_arc subject Category:Observational_astronomy.
• Observational_astronomy subject Category:Observational_astronomy.
• Observational_cosmology subject Category:Observational_astronomy.
• Observing_the_Moon subject Category:Observational_astronomy.
• Occultation subject Category:Observational_astronomy.
• Operation_Moonwatch subject Category:Observational_astronomy.
• Operation_Phototrack subject Category:Observational_astronomy.
• Opposition_(planets) subject Category:Observational_astronomy.
• Opposition_surge subject Category:Observational_astronomy.
• Orion_(spacecraft_instrument) subject Category:Observational_astronomy.
• PALFA_Survey subject Category:Observational_astronomy.
• Pan-Andromeda_Archaeological_Survey subject Category:Observational_astronomy.
• Phase_angle_(astronomy) subject Category:Observational_astronomy.
• Phase_curve_(astronomy) subject Category:Observational_astronomy.
• Phases_of_Venus subject Category:Observational_astronomy.
• Photometry_(astronomy) subject Category:Observational_astronomy.
• Planet subject Category:Observational_astronomy.
• Planetary_phase subject Category:Observational_astronomy.
• Planetshine subject Category:Observational_astronomy.
• Pre-stellar_core subject Category:Observational_astronomy.
• Quadrature_(astronomy) subject Category:Observational_astronomy.
• Quasi-periodic_oscillation subject Category:Observational_astronomy.
• RAVE_(survey) subject Category:Observational_astronomy.
• Radar_astronomy subject Category:Observational_astronomy.
• Radio_astronomy subject Category:Observational_astronomy.
• Radiometry subject Category:Observational_astronomy.
• Recessional_velocity subject Category:Observational_astronomy.

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