{"product_id":"telescope-optics-sam-brown-edmund-scientific-1966","title":"Telescope Optics","description":"\u003cp\u003eA 1966 Edmund Scientific Co. booklet (Popular Optics Library No. 9074), edited by Sam Brown, on optical design for telescope makers. It covers focal length, image-object problems, graphic ray tracing, and homemade eyepieces and objectives (mirrors and lenses), with a lens primer, the refractor, tables and diagrams. 32 pages.\u003c\/p\u003e","brand":"Sam Brown","offers":[{"title":"Default Title","offer_id":43668542816506,"sku":"ZA2\/20\/10232026","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/3387\/5450\/products\/IMG_6752_69061e28-5a24-4a40-aeee-82109587213c.jpg?v=1791307852","url":"https:\/\/flippedpages.com\/products\/telescope-optics-sam-brown-edmund-scientific-1966","provider":"Flipped Pages","version":"1.0","type":"link"}