Falcón-Gómez, EndersonAmor-Martín, AdriánDe la Rubia, ValentínSantamaría-Botello, Gabriel ArturoDe Falco, VittorioGarcía Muñoz, Luis Enrique2023-03-292023-03-292022-12-29The European Physical Journal C, (2022), 82(12), 1175, (10 p.).1434-6044https://hdl.handle.net/10016/37004A Publisher Erratum to this article was published on 21 March 2023: The European Physical Journal C, (2023), v. 83, Article number: 234, (1 p.).In this manuscript, we present an alternative method for calculating null geodesics in General Static Isotropic Metrics in General Relativity and Extended Theories of Gravity. By applying a conformal transformation, we are able to consider an analogue gravity model, where curvature is encoded in the dielectric and magnetic properties of a medium. In other words, we pass from curved to flat space-times, where instead of the Einstein field equations, the Maxwell equations are solved. Within this geometrical background, the photon geodesics are calculated. Then, given different black hole and wormhole metrics, we apply this method obtaining an excellent agreement with respect to the exact solutions in the original gravity framework by committing angular deviations below 3∘ . Finally, we provide the image of a Schwarzschild black hole surrounded by a thin accretion disk, and the apparent image of a Morris and Thorne-like wormhole within an angular discrepancy below 4∘ .10eng© The Author(s) 2023, corrected publication 2023.This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.Atribución 3.0 EspañaPropagation of lightGravitySpace-time modelsSpace-time modelsresearch articleFísicahttps://doi.org/10.1140/epjc/s10052-022-11124-zopen access112, 117510EUROPEAN PHYSICAL JOURNAL C82AR/0000032284