{"id":350,"date":"2020-12-01T09:04:26","date_gmt":"2020-12-01T09:04:26","guid":{"rendered":"http:\/\/lofar.bg\/?p=350"},"modified":"2020-12-01T09:04:28","modified_gmt":"2020-12-01T09:04:28","slug":"the-antennas-for-testing-lofar-bg-station-sites-have-arrived","status":"publish","type":"post","link":"https:\/\/lofar.bg\/?p=350&lang=en","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 loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201112_152814-1-768x1024.jpg 768w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201112_152814-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201112_152814-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_121825-1-1024x768.jpg 1024w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_121825-1-300x225.jpg 300w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_121825-1-768x576.jpg 768w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_121825-1-880x660.jpg 880w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125342-1-1024x768.jpg 1024w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125342-1-300x225.jpg 300w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125342-1-768x576.jpg 768w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125342-1-880x660.jpg 880w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>The high-frequency (HBA) spider-like antenna at the lab.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125526-1-768x1024.jpg 768w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125526-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201118_125526-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><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 loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_121904-1.jpg 800w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_121904-1-300x225.jpg 300w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_121904-1-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_130134-2.jpg 800w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_130134-2-300x225.jpg 300w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_130134-2-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_122846-1.jpg 600w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_122846-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_122846-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123018-1.jpg 600w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123018-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123018-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_124913-1.jpg 600w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_124913-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_124913-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123630-1.jpg 600w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123630-1-225x300.jpg 225w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123630-1-495x660.jpg 495w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" 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\" srcset=\"https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123156-1.jpg 800w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123156-1-300x225.jpg 300w, https:\/\/lofar.bg\/wp-content\/uploads\/2020\/12\/IMG_20201128_123156-1-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><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&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-350","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/posts\/350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lofar.bg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=350"}],"version-history":[{"count":2,"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/posts\/350\/revisions"}],"predecessor-version":[{"id":371,"href":"https:\/\/lofar.bg\/index.php?rest_route=\/wp\/v2\/posts\/350\/revisions\/371"}],"wp:attachment":[{"href":"https:\/\/lofar.bg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lofar.bg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lofar.bg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}