{"id":350,"date":"2020-12-01T09:04:26","date_gmt":"2020-12-01T09:04:26","guid":{"rendered":"http:\/\/lofar.bg\/?p=350"},"modified":"2020-12-01T09:04:26","modified_gmt":"2020-12-01T09:04:26","slug":"the-antennas-for-testing-lofar-bg-station-sites-have-arrived","status":"publish","type":"post","link":"https:\/\/stellar-h2020.eu\/index.php\/2020\/12\/01\/the-antennas-for-testing-lofar-bg-station-sites-have-arrived\/","title":{"rendered":"The Antennas for Testing LOFAR-BG station sites have arrived!"},"content":{"rendered":"\n<p>Christmas is coming, and with it &#8211; gifts! The Institute of Astronomy recently got a long-awaited shipment from The Netherlands &#8211; a huge crate with the test antennas for our future LOFAR-BG station \ud83d\ude42<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201112_152814-1-768x1024.jpg\" alt=\"\" data-id=\"351\" data-link=\"http:\/\/lofar.bg\/?attachment_id=351\" class=\"wp-image-351\"\/><figcaption>The large crate sent by ASTRON. We had to unmount a couple of doors&#8230;<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_121825-1-1024x768.jpg\" alt=\"\" data-id=\"352\" data-link=\"http:\/\/lofar.bg\/?attachment_id=352\" class=\"wp-image-352\"\/><figcaption>The contents \ud83d\ude42<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>After carefully unwrapping and checking the contents for damage, we delivered them to Assoc. Prof. Peter Petkov from the Radiocommunications Dept. of the Technical University-Sofia, for testing and preparing the measurement system. Our main goal is to measure the levels of radio noise (background) in the spectral bands of the low-frequency (10-90 MHz) and high-frequency (110-250 MHz) antennas of LOFAR at the pre-selected possible sites for the LOFAR-BG station.<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125342-1-1024x768.jpg\" alt=\"\" data-id=\"356\" data-link=\"http:\/\/lofar.bg\/?attachment_id=356\" class=\"wp-image-356\"\/><figcaption>The high-frequency (HBA) spider-like antenna at the lab.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125526-1-768x1024.jpg\" alt=\"\" data-id=\"357\" data-link=\"http:\/\/lofar.bg\/?attachment_id=357\" class=\"wp-image-357\"\/><figcaption>Checking the system components at the lab; the low-frequency (LBA) antenna is at foreground. <\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>After making sure the components were in order and assembling the test system, it was time for some real measurements! A great first place to start is always the parking lot in front of the University \ud83d\ude42<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_121904-1.jpg\" alt=\"\" data-id=\"358\" data-link=\"http:\/\/lofar.bg\/?attachment_id=358\" class=\"wp-image-358\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_130134-2.jpg\" alt=\"\" data-id=\"366\" data-link=\"http:\/\/lofar.bg\/?attachment_id=366\" class=\"wp-image-366\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_122846-1.jpg\" alt=\"\" data-id=\"359\" data-link=\"http:\/\/lofar.bg\/?attachment_id=359\" class=\"wp-image-359\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123018-1.jpg\" alt=\"\" data-id=\"361\" data-link=\"http:\/\/lofar.bg\/?attachment_id=361\" class=\"wp-image-361\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_124913-1.jpg\" alt=\"\" data-id=\"364\" data-link=\"http:\/\/lofar.bg\/?attachment_id=364\" class=\"wp-image-364\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123630-1.jpg\" alt=\"\" data-id=\"363\" data-link=\"http:\/\/lofar.bg\/?attachment_id=363\" class=\"wp-image-363\"\/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123156-1.jpg\" alt=\"\" data-id=\"362\" data-link=\"http:\/\/lofar.bg\/?attachment_id=362\" class=\"wp-image-362\"\/><figcaption>IANAO PhD student Mohamed Nedal and Assoc. Prof. Peter Petkov from TU-Sofia taking measurements<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>The initial tests were successful, and very soon we will begin measurements on site. More news to come!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Christmas is coming, and with it &#8211; gifts! The Institute of Astronomy recently got a long-awaited shipment from The Netherlands &#8211; a huge crate with the test antennas for our future LOFAR-BG station \ud83d\ude42 After carefully unwrapping and checking the contents for damage, we delivered them to Assoc. Prof. Peter Petkov from the Radiocommunications Dept. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-350","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/posts\/350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/comments?post=350"}],"version-history":[{"count":0,"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/posts\/350\/revisions"}],"wp:attachment":[{"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/media?parent=350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/categories?post=350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stellar-h2020.eu\/index.php\/wp-json\/wp\/v2\/tags?post=350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}