{"id":1298,"date":"2017-11-14T12:28:50","date_gmt":"2017-11-14T12:28:50","guid":{"rendered":"http:\/\/54.173.53.74\/?page_id=1298"},"modified":"2020-08-05T12:50:52","modified_gmt":"2020-08-05T02:50:52","slug":"skymapper","status":"publish","type":"page","link":"https:\/\/asvo.org.au\/index.php\/skymapper\/","title":{"rendered":"SkyMapper"},"content":{"rendered":"<p>The <a href=\"http:\/\/skymapper.anu.edu.au\">SkyMapper ASVO node<\/a> is the primary access point to the SkyMapper data. The first version of the node was co-developed by the National Computing Infrastructure (NCI), Australian National University (ANU), and <a href=\"http:\/\/www.intersect.org.au\/\">Intersect Australia Limited<\/a>. The node has three major data releases:<\/p>\n<ul>\n<li><strong>Test Data Release (TDR) \u2013 July 2015<\/strong><\/li>\n<\/ul>\n<p>The Test Data Release was a preview of the Survey data, designed to show their characteristics, while also testing data access methods for images and catalogues. It covers approximately 60 square degrees near RA=13h 40m and Dec=-15 deg.<\/p>\n<ul>\n<li><strong>Early Data Release (EDR) \u2013 May 2016<\/strong><\/li>\n<\/ul>\n<p>The Early Data Release provided data from the Short Survey across one-third of the southern sky. EDR includes all fields observed between March 2014 and March 2015 where at least two visits of the telescope were made in near-photometric conditions. Each visit includes an exposure in all six filters, uvgriz.<\/p>\n<ul>\n<li><strong>First Data Release (DR1) \u2013 June 2017<\/strong><\/li>\n<\/ul>\n<p>The First Data Release provides data from the Shallow Survey across &gt;98% of the southern sky, mostly covering the range from the South Celestial Pole to +2 deg in declination, with some extra coverage reaching +10 deg. DR1 includes fields observed between March 2014 and September 2015, with a number of quality cuts applied. Additionally, DR1 includes measurements from over 2.3 billion detections covering over 20,200 deg2 of the sky. They correspond to ~300 million unique astrophysical objects from magnitude 8 to 18 (complete to ~17.5 mag, depending on the filter).<\/p>\n<p>Data is currently accessible through Virtual Observatory-compatible tools such as\u00a0<a href=\"http:\/\/www.star.bris.ac.uk\/~mbt\/topcat\/\"><strong>TOPCAT<\/strong><\/a>, and\u00a0<a href=\"http:\/\/aladin.u-strasbg.fr\/\"><strong>Aladin<\/strong><\/a>. The system supports the following VO Services:<\/p>\n<ul>\n<li><a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>Cone Search<\/strong><\/a>(including\u00a0<a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>SCS<\/strong><\/a>)<\/li>\n<li><a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>Image Cutouts<\/strong><\/a>(including\u00a0<a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>SIAP<\/strong><\/a>)<\/li>\n<li><a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>Full Catalogue Search<\/strong><\/a>(including\u00a0<a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\"><strong>TAP access<\/strong><\/a>)<\/li>\n<\/ul>\n<p>More details are available on the <a href=\"http:\/\/skymapper.anu.edu.au\/how-to-access\/\">data access page<\/a>. An alternative web-interface is provided as well.<\/p>\n<p><strong>Technology currently used:<\/strong><\/p>\n<ul>\n<li>Python Django<\/li>\n<li>Python CherryPy<\/li>\n<li>Basic JavaScript using JQuery and D3JS.<\/li>\n<\/ul>\n<p><strong>Hardware arrangement:<\/strong><\/p>\n<p>Currently the node is hosted on a virtualized instance at the National Computing Infrastructure (NCI).<\/p>\n<ul>\n<li>Database Server (8 CPUs, 32 GB).<\/li>\n<li>Virtual Node for the user interface hosting (2 CPU, and 8 GB).<\/li>\n<li>Storage is provided by NCI. For the early data release: 1.8 TB of table data (stored on an NCI virtual machine) and 19TB of compressed images (50TB uncompressed equivalent &#8211; stored on NCI&#8217;s g\/data1 system). The node is expecting a data growth to approximately 8TB of table data and up to 200TB of images by the end of 2017.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The SkyMapper ASVO node is the primary access point to the SkyMapper data. The first version of the node was co-developed by the National Computing Infrastructure (NCI), Australian National University (ANU), and Intersect Australia Limited. The node has three major data releases: Test Data Release (TDR) \u2013 July 2015 The&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1339,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/full-width-page.php","meta":{"footnotes":""},"class_list":["post-1298","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/pages\/1298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/comments?post=1298"}],"version-history":[{"count":3,"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/pages\/1298\/revisions"}],"predecessor-version":[{"id":1435,"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/pages\/1298\/revisions\/1435"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/media\/1339"}],"wp:attachment":[{"href":"https:\/\/asvo.org.au\/index.php\/wp-json\/wp\/v2\/media?parent=1298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}