{"product_id":"prisma-herschel-tess-2","title":"Herschel TESS 2'' Diagonal","description":"\u003cdiv\u003e\n\u003cp\u003eA Herschel wedge offers \u003cb\u003eespecially high resolution\u003c\/b\u003e for solar observation and photography.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan \u003cb\u003eonly\u003c\/b\u003e be used \u003cb\u003ewith refractors\u003c\/b\u003e. For reflector telescopes, use objective solar filters instead.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eUse with caution!\u003c\/b\u003e \u003cu\u003eDo not use\u003c\/u\u003e with inexpensive telescopes that have plastic parts inside! These could melt or even burn if the telescope is not exactly aligned with the sun!\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eAlways supervise\u003c\/b\u003e telescopes pointed at the sun with a Herschel wedge\u003cb\u003e!\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e96% of the sunlight passes through the prism and hits the ceramic disk. This converts the light into heat. Therefore:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2\" prism usable with apertures up to 150 mm in diameter\u003c\/li\u003e\n\u003cli\u003e1.25\" prism up to 120 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOf course, telescopes with a larger aperture can be dimmed.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAdvantages of Omegon Tess-Herschel Prisms\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe diffuse spot on the ceramic disk is ideal for precisely aligning the telescope with the sun\u003c\/li\u003e\n\u003cli\u003eIntegrated polarizing filter - adjustable brightness: shorter exposure times, observation even with light cloud cover and with appropriate contrast\u003c\/li\u003e\n\u003cli\u003eIntegrated neutral density filter: safe observation, but the image must be well dimmed!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReliable connection of eyepieces and cameras:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2\" prism has a Twist Lock closure\u003c\/li\u003e\n\u003cli\u003eThe 1.25\" prism has a T2 thread for cameras and ring clamping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHere you will find an online guide to Herschel prisms [https:\/\/bookstack.Astroshop.de\/search?term=herschel \"available here\"]\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Omegon","offers":[{"title":"Default Title","offer_id":53581588267351,"sku":"87081","price":352.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/87081_1.jpg?v=1779016138","url":"https:\/\/astrotelescopios.com\/en-us\/products\/prisma-herschel-tess-2","provider":"Astro Telescopios","version":"1.0","type":"link"}