== Data Source == ==== Observatory ==== type: ''menu''[[BR]] FITS keyword: ''OBSERVTY'' An identifier of the observatory, space platform, or network of observatories (or spacecraft) from which the data originate. In the case of networks such as GONG or CLUSTER, the particular observatory site or spacecraft may be identified by Instrument if each member is single-instrument. In the case of multi-instrument multi-site networks, another Data Source search parameter (Site or Instance or Platform or Network) may be required. Note that network is used in the sense of functionally identical instruments deployed in different locations, and not coordinated data collections from distinct instruments, such as the H-alpha Network; that is considered a Provider. The recognized values are those in the data registry, and the list is subject to modification whenever the data registry is modified. * '''BBSO''' : Big Bear Solar Observatory * '''Evans''' Solar Telescope, Sacramento Peak * '''GONG''' : Global Oscillations Network Group * '''JSPO''' : Jeffreys South Pole Observatory * '''KANZ''' : Kanzelhöhe Solar Observatory * '''KPVT''' : Kitt Peak Vacuum Tower Telescope * '''McMath''' Solar Telescope, Kitt Peak * '''MEDN''' : Observatoire de Paris, Meudon * '''MLSO''' : Mauna Loa Solar Observatory * '''MtWilson''' : Mt. Wilson 60ft Tower Telescope * '''Nançay''' Radio Observatory * '''OACT''' : Osservatorio Astrofisico di Catania * '''PicMidi''' : Observatoire du Pic du Midi * '''SOHO''' : Solar and Heliospheric Observatory * '''SOLIS''' : Synoptic Optical Long-term Investigations of the Sun * '''OBSPM''' : Observatoire de Paris, Meudon * '''OVRO''' : Owens Valley Radio Observatory * '''TON''' : Taiwan Oscillations Network * '''YNAO''' : Yunnan Astronomical Observatory * '''Yohkoh''' For the current list, consult the '''[http://vso.nascom.nasa.gov/cgi/show_details?keyword=SOURCE Registry]'''. ==== Instrument ==== type: ''menu''[[BR]] FITS keyword: ''INSTRUMT'' For multi-instrument space observatories, an identifier of the particular instrument from which the data originate. For observatories, the Instrument may refer to a particular telescope or to one of multiple standard configurations of telescope plus detectors. For the list of instruments registered, consult the '''[http://vso.nascom.nasa.gov/cgi/show_details?keyword=INSTRUMENT Registry]'''. ==== Provider ==== type: ''menu'' The identifier of the data archive providing search and retrieval functions for the data in question. The same data may of course be mirrored at two or more archives. Since the provider id is at least implicit in a data registry, this just means that the same data set would appear in multiple registries. Some data providers may be ''virtual,'' that is the query (but not the archive and distribution) services may be handled by other servers with access to their database information as proxies. Recognized values at time of writing: * '''HANET''' : H-alpha Network, Big Bear Lake * '''HAO''' :High-Altitude Observatory, Boulder * '''MSU''' : Montana State University, Bozeman * '''NSO''' : National Solar Observatory, Tucson * '''OBSPM''' : Observatoire de Paris, Meudon * '''OVRO''' : Owens Valley Radio Observatory * '''SDAC''' : Solar Data Analysis Center, Greenbelt * '''SHA''' : Stanford Helioseismology Archive For the current list, consult the '''[http://vso.nascom.nasa.gov/cgi/show_details?keyword=PROVIDER Registry]'''.