{"product_id":"filtro-nebulare-uhc-explore-scientific-1-25","title":"Filtro Nebulare UHC Explore Scientific 1.25\"","description":"\u003cp\u003eOne of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects bejond the solar systems enourmously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by blocking the annoying artifical light. \u003c\/p\u003e\u003cp\u003eThe Explore Scientific UHC filter uses a characteristic property of the so called emmission nebulae. Those objects glow in special colors, the so called emmission lines. Those emmission lines are linked to chemical elements – in this case hydrogen at 486nm and 656nm, plus oxygen at 496nm and 501nm. The Explore Scientific UHC nebula filter blocks all other colors (and thereby nearly all of the artificial light) and only the emmission line of the hydrogen and oxygen can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburbian skies for example the Owl-nebula M97, the Veil-nebula Ngc 6992 or even the bright Dumbell-nebula M27 are not clearly visible. By using this filter you can see the nebulae and their structures without problems. A must for every visual observer. The Explore Scientific nebula filters come with a individual test certificate – your guarantee to receive a premium filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEnables the observation of so called emmission nebulae\u003c\/li\u003e\n\u003cli\u003eBlocks almost the entire artificial light\u003c\/li\u003e\n\u003cli\u003eOnly the two emmission lines of hydrogen and oxygen passes the filter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarchio\u003c\/td\u003e\n\u003ctd\u003eExplore Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGaranzia\u003c\/td\u003e\n\u003ctd\u003e2 anni\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e4007922000077\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensione confezione (LxPxH)\u003c\/td\u003e\n\u003ctd\u003e16x12x4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeso spedizione\u003c\/td\u003e\n\u003ctd\u003e0.24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTipo di filtro\u003c\/td\u003e\n\u003ctd\u003ecielo profondo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTipo di costruzione\u003c\/td\u003e\n\u003ctd\u003eUHC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMateriale delle ottiche\u003c\/td\u003e\n\u003ctd\u003evetro ottico\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrattamento lenti\u003c\/td\u003e\n\u003ctd\u003emulti-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiametro del barilotto, in\u003c\/td\u003e\n\u003ctd\u003e1,25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilettatura esterna (per l’installazione nell’oculare)\u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicazione\u003c\/td\u003e\n\u003ctd\u003eosservazione di nebulose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustodia inclusa\u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"EXPLORE SCIENTIFIC","offers":[{"title":"Default Title","offer_id":53137472848200,"sku":"LVH-74788","price":71.94,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/74788_explore-scientific-nebula-filter-uhc-1-25_00.jpg?v=1779296138","url":"https:\/\/astrofy.it\/products\/filtro-nebulare-uhc-explore-scientific-1-25","provider":"ASTROFY ASTRONOMY STORE","version":"1.0","type":"link"}