{"id":517,"date":"2019-05-01T17:36:09","date_gmt":"2019-05-01T15:36:09","guid":{"rendered":"https:\/\/www.oa-roma.inaf.it\/merlin\/?p=517"},"modified":"2019-06-20T12:23:47","modified_gmt":"2019-06-20T10:23:47","slug":"a-phot","status":"publish","type":"post","link":"https:\/\/www.oa-roma.inaf.it\/merlin\/2019\/05\/01\/a-phot\/","title":{"rendered":"A-PHOT"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">A-PHOT: a new, versatile code for precision aperture photometry<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"http:\/\/www.astrodeep.eu\/wp-content\/uploads\/2018\/09\/kron_and_bestSN_apertures_zoom-1024x409.png\" alt=\"kron_and_bestSN_apertures_zoom\" class=\"wp-image-3479\" \/><\/figure><\/div>\n\n\n\n<p><a rel=\"noreferrer noopener\" aria-label=\"Download A-PHOT (si apre in una nuova scheda)\" href=\"https:\/\/gitlab.com\/EMerlin\/a-phot\" target=\"_blank\"><em>Download A-PHOT<\/em><\/a><\/p>\n\n\n\n<p>A-PHOT is a code designed to perform aperture photometry on astronomical images, particularly well suited for  multi-band extra-galactic surveys.<\/p>\n\n\n\n<p>A-PHOT estimates the fluxes emitted by astronomical objects within \nany chosen set of circular or elliptical apertures. Unlike other widely \nused codes, it runs on pre-defined lists of positions, allowing for \nrepeated measurements on the same list of objects on different images. \nThis can be useful when forced photometric measurements on a given \nposition are needed.<\/p>\n\n\n\n<p>A-PHOT can estimate morphological parameters (size, ellipticity, \nposition angle and Kron radius of the sources). It can also compute a \nlocal background flux, and on-the-fly individual optimized elliptical \napertures, in which the signal-to-noise ratio is maximized. Clipping, \nflagging and symmetric replacing of bad pixels are optionally possible.<\/p>\n\n\n\n<p>A-PHOT proves to a useful and versatile tool to quickly extract \nrobust and accurate photometric measurements and basic morphological \ninformation of galaxies and stars, with the advantage of allowing for \nvarious measurements of fluxes at any chosen position without the need \nof a full detection run, and to determine the basic morphological \nfeatures of the sources.<\/p>\n\n\n\n<p>The code is presented in Merlin et al. 2019, <a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2019A&amp;A...622A.169M\/abstract\">2019A&amp;A\u2026622A.169M<\/a>. <em><strong>Please cite this paper if you use A-PHOT for your science!<\/strong><\/em><\/p>\n\n\n\n<p>Please contact emiliano.merlin@inaf.it for any question \/ problem \/ bug \/ suggestion. Thanks!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A-PHOT: a new, versatile code for precision aperture photometry Download A-PHOT A-PHOT is a code designed to perform aperture photometry on astronomical images, particularly well suited for multi-band extra-galactic surveys. A-PHOT estimates the fluxes emitted by astronomical objects within any chosen set of circular or elliptical apertures. Unlike other widely used codes, it runs on &hellip; <a href=\"https:\/\/www.oa-roma.inaf.it\/merlin\/2019\/05\/01\/a-phot\/\" class=\"more-link\">Continua la lettura di <span class=\"screen-reader-text\">A-PHOT<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":40,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-517","post","type-post","status-publish","format-standard","hentry","category-senza-categoria"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/posts\/517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/users\/40"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/comments?post=517"}],"version-history":[{"count":4,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/posts\/517\/revisions"}],"predecessor-version":[{"id":536,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/posts\/517\/revisions\/536"}],"wp:attachment":[{"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/media?parent=517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/categories?post=517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oa-roma.inaf.it\/merlin\/wp-json\/wp\/v2\/tags?post=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}