{"ob_id":19755,"uuid":"d48eaf5a8b52496b9432624a1b21f776","title":"NERC MST Radar Facility Noctilucent Cloud camera","abstract":"The camera is operated between dusk and dawn (typically at 5 minute intervals) during the mid-summer months (principally June and July) with the aim of observing Noctilucent Cloiuds for scientific study. It is located within the Receive Cabin of the Chilbolton Observatory, Hampshire, UK\r\n(51.145168°N,-1.4397500°E). It is approximately 4.3 m above the ground level,\r\nwhich is approximately 84 m above mean sea level. The field of view (taking\r\nthe 1.6 crop factor of the camera into account) is 67.9° in the horizontal and\r\n45.3° in the vertical. The centre of each image is directed towards an azimuth\r\nof approximately +15°. However, since the camera body is not locked in place,\r\nthis value can vary by a few degrees (typically from one year to the\r\nnext). The azimuth at which stars reach their lowest elevation corresponds to\r\ntrue north. This has been used to estimate an azimuth of +17.6° for where the\r\nmast in th e foreground crosses the skyline. The +0.4° elevation of the skyline\r\nhas been measured with an inclinometer. Date-time information is derived from\r\nthe image capture computer and given in Coordinated Universal Time (UTC).\r\n","keywords":"Noctilucent cloud","identifier_set":[],"instrumentType":"imager","subInstrument":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/74830/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/74827/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/74828/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/74829/?format=json"]}