{"product_id":"explore-scientific-generation-ii-16-inch-truss-tube-dobsonian-telescope","title":"Explore Scientific - Generation II - 16-inch Truss Tube Dobsonian Telescope","description":"\u003ch6\u003eDESCRIPTION:\u003c\/h6\u003e\n\u003cp\u003eThis is a second-generation telescope with all necessary updates performed. The Dobsonian telescope has revolutionized amateur astronomy. Before John Dobson popularized it, most telescopes used primitive mechanics, barely capable of observing the polar caps of Mars or the rings of Saturn. Larger Schmidt-Cassegrain telescopes were too expensive for most people. The Dobsonian telescope is unique for its simple yet effective mechanisms and large aperture, making it an affordable and popular choice for astronomy enthusiasts worldwide. It provides more light for its price than any other telescope. The scope can be disassembled without tools for easy transportation, even in small cars. The entire structure is designed for maximum stiffness with minimal weight. High altitude bearings and optimized aluminum structures allow for fine adjustments at high magnifications.\u003c\/p\u003e\n\u003cp\u003eAre you looking for a telescope that is perfect for observing deep sky objects? Look no further than the 406mm mirror telescope. With over 2,400 times the light-collecting power of the human eye, this telescope can reveal details on planets and deep sky objects that are invisible to inexperienced observers. Even bright star clusters can be resolved to their core. And, if you've never seen the terminator on the moon, this telescope will provide an unforgettable experience.\u003c\/p\u003e\n\u003cp\u003eIncludes 2\" focuser with helical gearing and 10:1 reduction; LED Red Dot Finder, collimation assist tool; soft light baffle and two radial main mirror fan for fast temperature equilibrium. AA Battery Pack for fans not included.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCA Residents: \u003c\/span\u003e\u003cstrong\u003e\u003ca rel=\"noopener\" aria-label=\"Prop 65 WARNING(S) - Opens in a new tab\" href=\"https:\/\/explorescientificusa.com\/pages\/prop65\" target=\"_blank\"\u003eProp 65 WARNING(S)\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch6\u003eSPECIFICATIONS:\u003c\/h6\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eES-DOB1645-00\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003ef\/ratio\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003ef\/4.5\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eFocal length\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e1,826 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003ePrimary mirror diameter\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e40.9 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eSecondary obstruction\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e25%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eMirror cell support points\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e9\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTruss pole length\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e140 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTruss pole diameter\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e25 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eSecondary cage assembly diameter\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e48 cm OD\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eSecondary cage assembly weight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e8 pounds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eSecondary cage assembly height\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e17 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eMirror box\/rocker box height\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e42.5 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eMirror box weight *\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e66 pounds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eHeight to center of eyepiece at zenith\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e167 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTheoretical limiting stellar magnitude\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e0.29 arc sec\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTheoretical Rayleigh limit\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e0.34 arc sec\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTheoretical limiting magnitude\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e15.74 mag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eTheoretical maximum magnification\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e800x\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003e*\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eMirror weight can vary because of the manufacturing process; these values are approximate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch6\u003eWARRANTY:\u003c\/h6\u003e\n\u003cp\u003e\u003cspan\u003eExplore STAR Transferrable Product Warranty when product is registered within 60 days of purchase. \u003c\/span\u003e\u003ca rel=\"noopener\" aria-label=\"Click Here - Opens in a new tab\" href=\"https:\/\/explorescientificusa.com\/apps\/product-registration\" target=\"_blank\"\u003eClick Here\u003c\/a\u003e\u003cspan\u003e to register.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003eMANUAL:\u003c\/h6\u003e\n\u003cp\u003e\u003cspan\u003eTo download printable PDF manual \u003c\/span\u003e\u003ca rel=\"noopener\" aria-label=\"Click Here - Opens in a new tab\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0390\/6029\/files\/ES_AllTrussTubeDOBs_Manual_2021.pdf?v=1621868989\" target=\"_blank\"\u003e\u003cstrong\u003eClick Here\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":47818255466800,"sku":"ES-DOB1645-00","price":3599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/3113\/5280\/files\/DOB1645-00_Full_Hot_Product_2016_665x665_d5a81ab9-679e-4e77-a0e2-788d2495a4b5.jpg?v=1709875858","url":"https:\/\/b9549c-5.myshopify.com\/products\/explore-scientific-generation-ii-16-inch-truss-tube-dobsonian-telescope","provider":"StellarOptix","version":"1.0","type":"link"}