https://e-sygoing.link Latest links in the Optical and Infrared category en-us Mon, 25 May 2026 08:25:58 -0400 https://e-sygoing.link/link/5301167-sloan-digital-sky-survey A dedicated 2.5 meter telescope which uses sensitive electronic light detectors to systematically map a quarter of the sky, building a catalog of celestial objects, galaxies, and quasars. Data links, questions and answers, image gallery, project tour, news, archive, publications, and links. Fri, 17 Apr 2026 20:46:24 -0400 https://e-sygoing.link/go/5301167 https://e-sygoing.link/link/5301174-mcdonald-observatory Facility information, equipment and instrumentation, observer information, and research. Mon, 09 Jun 2025 14:44:28 -0400 https://e-sygoing.link/go/5301174 https://e-sygoing.link/link/5301170-spitzer-space-telescope General information, articles, downloads, equipment information, news, and links. Wed, 30 Apr 2025 16:44:03 -0400 https://e-sygoing.link/go/5301170 https://e-sygoing.link/link/5301165-mount-laguna-observatory Facilities, equipment and instrumentation information, virtual tour, site map, CCD camera laboratory and production, and resources. Sun, 10 Nov 2024 09:29:33 -0500 https://e-sygoing.link/go/5301165 https://e-sygoing.link/link/5301169-infrared-telescope-facility General information, observing information, instrumentation, facility systems, photo gallery, news, and links. Wed, 08 May 2024 05:41:09 -0400 https://e-sygoing.link/go/5301169 https://e-sygoing.link/link/5301166-tenagra-observatories Operations, commercial time, facilities and equipment information, sites, discoveries, articles, and links. Fri, 12 Apr 2024 02:51:09 -0400 https://e-sygoing.link/go/5301166 https://e-sygoing.link/link/5301164-lowell-observatory Research, education and outreach, mission, star tales, and links. Sun, 17 Mar 2024 10:50:06 -0400 https://e-sygoing.link/go/5301164 https://e-sygoing.link/link/5301159-apache-point-observatory Consists of 3.5 meter, 2.5 meter, and 1.0 meter with projects, schedules, observing aids, and information for each. Sun, 03 Mar 2024 14:24:09 -0500 https://e-sygoing.link/go/5301159 https://e-sygoing.link/link/5301160-mount-wilson-observatory Projects, outreach and education, history, FAQ, news, and links. Mon, 23 Jan 2023 10:37:39 -0500 https://e-sygoing.link/go/5301160