{"product_id":"t-2-stardiagonal-prism","title":"Baader T-2 Stardiagonal Prism","description":"\u003cp\u003eThe Baader T-2 Stardiagonal is a compact 90° prism star diagonal with a large 36 mm BaK4 prism, giving a full 34 mm clear aperture and a short 38.5 mm optical path. Baader recommends it especially for binoviewers with large prisms, and for any set-up where back focus is limited.\u003c\/p\u003e\u003cp\u003eThe prism is polished to 1\/10 wave and coated with Baader's Phantom Coating group plus a sealed BBHS silver back-surface coating, housed in a CNC-milled aluminium body with T-2 threads on both sides so it can be adapted to almost any telescope.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge 36 mm prism\u003c\/strong\u003e – BaK4 glass prism gives a full 34 mm clear aperture, suited to large-prism binoviewers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort optical path\u003c\/strong\u003e – Only 38.5 mm of light path, ideal where back focus is limited.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBBHS silver coating\u003c\/strong\u003e – Sealed silver back-surface coating for high reflectivity and long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision surfaces\u003c\/strong\u003e – Prism faces are polished to 1\/10 lambda, flatter than typical prisms in plastic bodies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular T-2 system\u003c\/strong\u003e – T-2 thread on both sides lets you build it into the Baader T-2 system with nosepieces and eyepiece holders of your choice (sold separately).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSturdy aluminium body\u003c\/strong\u003e – CNC-milled aluminium housing for a solid, compact diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 1.5em;font-size:.95em\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003ePart number\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003eBAA2456095\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eBaader item number\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003e2456095\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003e90° prism star diagonal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003ePrism\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003e36 mm \/ 90°, BaK4 glass, 1\/10 lambda surface precision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eCoating\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003ePhantom Coating group + sealed BBHS back-surface coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eClear aperture\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003e34 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eOptical path length\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003e38.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eConnections\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003eT-2 thread on both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0;width:42%;color:#555\"\u003eBody\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;border:1px solid #e0e0e0\"\u003eCNC-milled aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Baader","offers":[{"title":"Default Title","offer_id":54773655503132,"sku":"BAA2456095","price":429.0,"currency_code":"AUD","in_stock":true}],"url":"https:\/\/www.magnumsports.com.au\/products\/t-2-stardiagonal-prism","provider":"Magnum Sports","version":"1.0","type":"link"}