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The Australia Telescope Compact Array (ATCA) is a radio telescope operated by CSIRO at the Paul Wild Observatory, twenty five kilometres (16 mi) west of the town of Narrabri in Australia. The telescope is an array of six identical diameter dishes, which commonly operate in aperture synthesis mode to produce radio images. Five of the dishes can be moved along a three-kilometre (2 mi) railway track. The sixth antenna is situated three kilometres west of the end of the main track. Each dish weighs about . The Compact Array is a part of the Australia Telescope National Facility network of radio telescopes. The array is frequently operated together with other CSIRO telescopes, the dish at the Parkes Observatory and a single dish at Mopra (near Coonabarabran), to form a very long baseline interferometry array. The Array welcomes visitors from the general public. The facility includes a Visitor's Centre where the operations of the array can be observed in comfort and shade, and it has a range of informational displays and audiovisual presentations, while the surrounding grounds have displays and activities for visitors. Open Days are run regularly, and to mark special events such as the anniversary of the first Moon landing, or major anniversaries of the telescope itself.〔(【引用サイトリンク】url=http://www.atnf.csiro.au/outreach/visiting/narrabri/index.html )〕 The children's/young adult drama Sky Trackers was filmed in this facility in 1994 with the radio telescopes being prominently featured. CSIRO ScienceImage 227 Five Antennas at Narrabri.jpg|Five of the antennas (2000) ATCA Radio Telescope Narrabri 2005 12 21.jpg|One antenna vertically aligned (2005) CSIRO ScienceImage 104 Closeup of Australia Telescope Compact Array Construction.jpg|The array under construction (1988〔http://www.atnf.csiro.au/outreach/about/history/building-atca/index.html〕) ATCA night observers 2013 09 01.JPG|Star gazing beside the array, as part of its 25th anniversary celebrations on 1 September 2013. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Australia Telescope Compact Array」の詳細全文を読む スポンサード リンク
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