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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Solar_transit> ?p ?o }

• Solar_transit abstract "In astronomy, a solar transit is a movement of any object passing between the Sun and the Earth. This mainly includes the planets Mercury and Venus. A solar eclipse is also a solar transit of the Moon, but technically only if it does not cover the entire disc of the Sun (an annular eclipse), as \"transit\" counts only objects that are smaller than what they are passing in front of. Solar transit is only one of several types of astronomical transit.Solar transit (or a solar outage, sometimes solar fade, sun outage, or sun fade) also occurs to communications satellites, which pass in front of the Sun for several minutes each day for several days straight for a period in the months around the equinoxes, the exact dates depending on where the satellite is in the sky relative to its earth station. Because the Sun also produces a great deal of microwave radiation in addition to sunlight, it overwhelms the microwave radio signals coming from the satellite's transponders. This enormous electromagnetic interference causes interruptions in fixed satellite services that use satellite dishes, including TV networks and radio networks, as well as VSAT and DBS. Only downlinks from the satellite are affected, uplinks from the Earth are normally not, as the planet \"shades\" the Earth station when viewed from the satellite. Satellites in geosynchronous orbit are irregularly affected based on their inclination. Reception from satellites in other orbits are frequently but only momentarily affected by this, and by their nature the same signal is usually repeated or relayed on another satellite, if a tracking dish is used at all. Satellite radio and other services like GPS are not affected, as they use no receiving dish, and therefore do not concentrate the interference. (GPS and certain satellite radio systems use non-geosynchronous satellites.)Solar transit begins with only a brief degradation in signal quality for a few moments. At the same time each day, for the next several days, it gets longer and gets worse, until finally gradually improving after several more days. For digital satellite services, the cliff effect will eliminate reception entirely at a given threshold. Reception is typically lost for only a few minutes on the worst day, but the beam width of the dish can affect this. Signal strength also affects this, as does the bandwidth of the signal. If the power is concentrated into a narrower band, there is a higher signal-to-noise ratio. If the same signal is spread wider, the receiver also gets a wider swath of noise, degrading reception.The exact days and times of solar transit outages, for each satellite and for each receiving point (Earth station) on the Earth, are available at various websites. For broadcast networks, the network feed must be pre-recorded, replaced with local programming, fed via another satellite in a different orbital position, or fed via another method entirely during these times. In the Northern Hemisphere, solar transit is usually in early March and October. In the Southern Hemisphere, solar transit is usually in early September and April. The time of day varies mainly with the longitude of the satellite and receiving station, while the exact days vary mainly with the station's latitude. Stations along the equator will experience solar transit right at the equinoxes, as that is where geostationary satellites are located directly over.Note that with large dishes, it would be possible for the feedhorn to be damaged, which is prevented by the parabolic dishes being done in a flat (non-glossy) finish that does not focus light or heat effectively. Non-parabolic dishes cannot focus in this manner.".
• Solar_transit thumbnail Atlantis_silhouette.jpg?width=300.
• Solar_transit wikiPageExternalLink satellite-tools.
• Solar_transit wikiPageExternalLink solar_outages.cfm.
• Solar_transit wikiPageExternalLink 2_nofun.htm.
• Solar_transit wikiPageID "5953552".
• Solar_transit wikiPageLength "4806".
• Solar_transit wikiPageOutDegree "67".
• Solar_transit wikiPageRevisionID "617886882".
• Solar_transit wikiPageWikiLink Astronomy.
• Solar_transit wikiPageWikiLink Bandwidth_(signal_processing).
• Solar_transit wikiPageWikiLink Beam_diameter.
• Solar_transit wikiPageWikiLink Category:Planetary_science.
• Solar_transit wikiPageWikiLink Category:Satellite_broadcasting.
• Solar_transit wikiPageWikiLink Category:Sun.
• Solar_transit wikiPageWikiLink Cliff_effect.
• Solar_transit wikiPageWikiLink Communications_satellite.
• Solar_transit wikiPageWikiLink Day.
• Solar_transit wikiPageWikiLink Digital_data.
• Solar_transit wikiPageWikiLink Direct-broadcast_satellite.
• Solar_transit wikiPageWikiLink Earth.
• Solar_transit wikiPageWikiLink Electromagnetic_interference.
• Solar_transit wikiPageWikiLink Equator.
• Solar_transit wikiPageWikiLink Equinox.
• Solar_transit wikiPageWikiLink Equivalent_isotropically_radiated_power.
• Solar_transit wikiPageWikiLink Feed_horn.
• Solar_transit wikiPageWikiLink Fixed-satellite_service.
• Solar_transit wikiPageWikiLink Focus_(optics).
• Solar_transit wikiPageWikiLink Geosynchronous_orbit.
• Solar_transit wikiPageWikiLink Geosynchronous_satellite.
• Solar_transit wikiPageWikiLink Global_Positioning_System.
• Solar_transit wikiPageWikiLink Gloss_(optics).
• Solar_transit wikiPageWikiLink Ground_station.
• Solar_transit wikiPageWikiLink Heat.
• Solar_transit wikiPageWikiLink Latitude.
• Solar_transit wikiPageWikiLink Light.
• Solar_transit wikiPageWikiLink Local_programming.
• Solar_transit wikiPageWikiLink Longitude.
• Solar_transit wikiPageWikiLink Mercury_(planet).
• Solar_transit wikiPageWikiLink Microwave.
• Solar_transit wikiPageWikiLink Minute.
• Solar_transit wikiPageWikiLink Moon.
• Solar_transit wikiPageWikiLink Network_feed.
• Solar_transit wikiPageWikiLink Northern_Hemisphere.
• Solar_transit wikiPageWikiLink Orbit.
• Solar_transit wikiPageWikiLink Orbital_inclination.
• Solar_transit wikiPageWikiLink Parabolic_reflector.
• Solar_transit wikiPageWikiLink Planet.
• Solar_transit wikiPageWikiLink Radiation.
• Solar_transit wikiPageWikiLink Radio.
• Solar_transit wikiPageWikiLink Radio_network.
• Solar_transit wikiPageWikiLink Relay.
• Solar_transit wikiPageWikiLink Repeater.
• Solar_transit wikiPageWikiLink Satellite_dish.
• Solar_transit wikiPageWikiLink Shade_(shadow).
• Solar_transit wikiPageWikiLink Signal-to-noise_ratio.
• Solar_transit wikiPageWikiLink Signal_strength_in_telecommunications.
• Solar_transit wikiPageWikiLink Solar_eclipse.
• Solar_transit wikiPageWikiLink Southern_Hemisphere.
• Solar_transit wikiPageWikiLink Sun.
• Solar_transit wikiPageWikiLink Sun_outage.
• Solar_transit wikiPageWikiLink Sunlight.
• Solar_transit wikiPageWikiLink Telecommunications_link.
• Solar_transit wikiPageWikiLink Television_network.
• Solar_transit wikiPageWikiLink Transit_(astronomy).
• Solar_transit wikiPageWikiLink Transponder.
• Solar_transit wikiPageWikiLink Venus.
• Solar_transit wikiPageWikiLink Very-small-aperture_terminal.
• Solar_transit wikiPageWikiLink Website.
• Solar_transit wikiPageWikiLink Wiktionary:signal.
• Solar_transit wikiPageWikiLink File:Atlantis_silhouette.jpg.
• Solar_transit wikiPageWikiLinkText "Solar transit".
• Solar_transit wikiPageWikiLinkText "solar transit".
• Solar_transit wikiPageWikiLinkText "transiting".
• Solar_transit wikiPageUsesTemplate Template:Unreferenced.
• Solar_transit subject Category:Planetary_science.
• Solar_transit subject Category:Satellite_broadcasting.
• Solar_transit subject Category:Sun.
• Solar_transit hypernym Movement.
• Solar_transit type Organisation.
• Solar_transit type Sub-discipline.
• Solar_transit comment "In astronomy, a solar transit is a movement of any object passing between the Sun and the Earth. This mainly includes the planets Mercury and Venus. A solar eclipse is also a solar transit of the Moon, but technically only if it does not cover the entire disc of the Sun (an annular eclipse), as \"transit\" counts only objects that are smaller than what they are passing in front of.".
• Solar_transit label "Solar transit".
• Solar_transit sameAs Q7556892.
• Solar_transit sameAs m.0fgf6d.
• Solar_transit sameAs Q7556892.
• Solar_transit wasDerivedFrom Solar_transit?oldid=617886882.
• Solar_transit depiction Atlantis_silhouette.jpg.
• Solar_transit isPrimaryTopicOf Solar_transit.