The Astropeiler team has investigated, how one can observe the hydrogen emission line at 21 cm wavelength with simple means. The results have been summarized in a series of articles (PDFs):<\/em><\/p>\n

Observation Results with Different Antennas<\/em><\/a><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"The Astropeiler team has investigated, how one can observe the hydrogen emission line at 21 cm wavelength with simple means. The results have been summarized in a series of articles (PDFs): Introduction and Antenna Options Low Noise Amplifiers and Filters Receivers and Backends (Software) Observation Results with Different Antennas","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":18,"comment_status":"closed","ping_status":"closed","template":"","meta":{"h5ap_radio_sources":[],"footnotes":""},"class_list":["post-355","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/pages\/355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/comments?post=355"}],"version-history":[{"count":10,"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/pages\/355\/revisions"}],"predecessor-version":[{"id":2347,"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/pages\/355\/revisions\/2347"}],"wp:attachment":[{"href":"https:\/\/www.astropeiler.de\/en\/wp-json\/wp\/v2\/media?parent=355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}