{"product_id":"2940014667203","title":"How To Use And Buy A Telescope..","description":"The 20th century also saw the development of telescopes that worked in a wide range of wavelengths from radio to gamma-rays. The first purpose built radio telescope went into operation in 1937. Since then, a tremendous variety of complex astronomical instruments have been developed.\u003cbr\u003eThe name \"telescope\" covers a wide range of instruments. Most detect electromagnetic radiation, but there are major differences in how astronomers must go about collecting light (electromagnetic radiation) in different frequency bands.","brand":"unique5stardeals","offers":[{"title":"Default Title","offer_id":47146091610352,"sku":"2940014667203","price":4.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940014667203_p0.jpg?v=1763613270","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940014667203","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}