Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Observational_astronomy> . }
- Redshift_survey subject Category:Observational_astronomy.
- Regiment_of_the_North_Pole subject Category:Observational_astronomy.
- Reverberation_mapping subject Category:Observational_astronomy.
- Rocket_Astrophysical_Observatories_K-2,_K-3_and_K-4 subject Category:Observational_astronomy.
- Rubin-Ford_effect subject Category:Observational_astronomy.
- SKY-MAP.ORG subject Category:Observational_astronomy.
- Shallow_sky subject Category:Observational_astronomy.
- Sky subject Category:Observational_astronomy.
- SkyScout subject Category:Observational_astronomy.
- Sky_brightness subject Category:Observational_astronomy.
- Sloan_Digital_Sky_Survey subject Category:Observational_astronomy.
- Spectral_atlas subject Category:Observational_astronomy.
- Spectral_energy_distribution subject Category:Observational_astronomy.
- Spectroscopy subject Category:Observational_astronomy.
- Star_hopping subject Category:Observational_astronomy.
- Starfield_(astronomy) subject Category:Observational_astronomy.
- Starlight subject Category:Observational_astronomy.
- Submillimetre_astronomy subject Category:Observational_astronomy.
- Sun_path subject Category:Observational_astronomy.
- Surface_brightness subject Category:Observational_astronomy.
- Taiwanese–American_Occultation_Survey subject Category:Observational_astronomy.
- Tasimeter subject Category:Observational_astronomy.
- Telluric_contamination subject Category:Observational_astronomy.
- Theoretical_astronomy subject Category:Observational_astronomy.
- Third-party_evidence_for_Apollo_Moon_landings subject Category:Observational_astronomy.
- Time_domain_astronomy subject Category:Observational_astronomy.
- Timeline_of_cosmic_microwave_background_astronomy subject Category:Observational_astronomy.
- Timeline_of_telescopes,_observatories,_and_observing_technology subject Category:Observational_astronomy.
- Transient_lunar_phenomenon subject Category:Observational_astronomy.
- Twinkling subject Category:Observational_astronomy.
- U.K._Schmidt–Caltech_Asteroid_Survey subject Category:Observational_astronomy.
- Ultraviolet_astronomy subject Category:Observational_astronomy.
- Umov_effect subject Category:Observational_astronomy.
- Visible-light_astronomy subject Category:Observational_astronomy.
- Wavefront_sensor subject Category:Observational_astronomy.
- Weber_bar subject Category:Observational_astronomy.
- X-ray_astronomy subject Category:Observational_astronomy.
- X-ray_background subject Category:Observational_astronomy.
- Zenith_camera subject Category:Observational_astronomy.
- Zenithal_Hourly_Rate subject Category:Observational_astronomy.
- Zodiacal_light subject Category:Observational_astronomy.
- Category:Amateur_astronomy broader Category:Observational_astronomy.
- Category:Astronomical_imaging broader Category:Observational_astronomy.
- Category:Astronomical_observatories broader Category:Observational_astronomy.
- Category:Astronomical_spectroscopy broader Category:Observational_astronomy.
- Category:Astronomical_surveys broader Category:Observational_astronomy.
- Category:Exoplanets_detected_by_direct_imaging broader Category:Observational_astronomy.
- Category:Interferometry broader Category:Observational_astronomy.
- Category:Light_pollution broader Category:Observational_astronomy.
- Category:Observational_cosmology broader Category:Observational_astronomy.
- Category:Observing_the_Moon broader Category:Observational_astronomy.
- Category:Photometric_systems broader Category:Observational_astronomy.
- Category:Radiometry broader Category:Observational_astronomy.
- Category:Spectroscopy broader Category:Observational_astronomy.
- Category:Telescopes broader Category:Observational_astronomy.