{"product_id":"irdk17-telescope","title":"PlaneWave IRDK17 F\/6.8 OTA","description":"\u003cp data-start=\"227\" data-end=\"306\"\u003e\u003cstrong data-start=\"227\" data-end=\"306\"\u003ePlaneWave IRDK17 – 17-Inch Infrared-Optimized Dall-Kirkham Telescope System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"308\" data-end=\"622\"\u003eThe IRDK17 from PlaneWave Instruments is an engineered optical system tailored for exceptional performance in the infrared spectrum. Designed to support advanced research, remote sensing, and long-range communications, this observatory-class instrument delivers optimal imaging results in non-visible wavelengths.\u003c\/p\u003e\n\u003cp data-start=\"624\" data-end=\"1048\"\u003eIts gold-coated mirrors are precisely optimized for high reflectivity in the IR range, ensuring maximum throughput for specialized instrumentation. Combined with a fused silica optical system and lightweight carbon fiber tube assembly, the IRDK17 offers superb thermal stability and mechanical rigidity, making it an ideal choice for infrared astronomy and scientific missions that require consistent, high-contrast imaging.\u003c\/p\u003e\n\u003chr data-start=\"1050\" data-end=\"1053\"\u003e\n\u003cp data-start=\"1055\" data-end=\"1077\"\u003e\u003cstrong data-start=\"1055\" data-end=\"1077\"\u003eKey Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1079\" data-end=\"1485\"\u003e\u003cstrong data-start=\"1079\" data-end=\"1098\"\u003eOptical Design:\u003c\/strong\u003e Infrared-optimized Dall-Kirkham (IRDK)\u003cbr data-start=\"1137\" data-end=\"1140\"\u003e\u003cstrong data-start=\"1140\" data-end=\"1159\"\u003eClear Aperture:\u003c\/strong\u003e 432mm (17 in)\u003cbr data-start=\"1173\" data-end=\"1176\"\u003e\u003cstrong data-start=\"1176\" data-end=\"1192\"\u003eFocal Ratio:\u003c\/strong\u003e f\/6.8\u003cbr data-start=\"1198\" data-end=\"1201\"\u003e\u003cstrong data-start=\"1201\" data-end=\"1218\"\u003eFocal Length:\u003c\/strong\u003e 2939mm\u003cbr data-start=\"1225\" data-end=\"1228\"\u003e\u003cstrong data-start=\"1228\" data-end=\"1243\"\u003eBack Focus:\u003c\/strong\u003e 262.33mm from mounting surface\u003cbr data-start=\"1274\" data-end=\"1277\"\u003e\u003cstrong data-start=\"1277\" data-end=\"1294\"\u003eImage Circle:\u003c\/strong\u003e 70mm\u003cbr data-start=\"1299\" data-end=\"1302\"\u003e\u003cstrong data-start=\"1302\" data-end=\"1321\"\u003eMirror Coating:\u003c\/strong\u003e Gold (optimized for IR; UV coating optional)\u003cbr data-start=\"1366\" data-end=\"1369\"\u003e\u003cstrong data-start=\"1369\" data-end=\"1389\"\u003eMirror Material:\u003c\/strong\u003e Fused silica – low thermal expansion\u003cbr data-start=\"1426\" data-end=\"1429\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1429\" data-end=\"1446\"\u003eOTA Material:\u003c\/strong\u003e Carbon fiber – lightweight and rigid\u003c\/p\u003e\n\u003chr data-start=\"1487\" data-end=\"1490\"\u003e\n\u003cp data-start=\"1492\" data-end=\"1522\"\u003e\u003cstrong data-start=\"1492\" data-end=\"1522\"\u003ePerformance \u0026amp; Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1524\" data-end=\"1721\"\u003e\u003cstrong data-start=\"1524\" data-end=\"1558\"\u003e- Infrared Imaging Excellence:\u003c\/strong\u003e\u003cbr data-start=\"1558\" data-end=\"1561\"\u003eGold-coated mirrors provide superior reflectivity in infrared wavelengths, enabling efficient photon capture for IR detectors and specialized instrumentation.\u003c\/p\u003e\n\u003cp data-start=\"1723\" data-end=\"1947\"\u003e\u003cstrong data-start=\"1723\" data-end=\"1760\"\u003e- Research-Grade Optical Clarity:\u003c\/strong\u003e\u003cbr data-start=\"1760\" data-end=\"1763\"\u003eThe IRDK optical system ensures a flat, coma-free, and distortion-free field across the 70mm image circle, ideal for demanding scientific applications and precision data acquisition.\u003c\/p\u003e\n\u003cp data-start=\"1949\" data-end=\"2184\"\u003e\u003cstrong data-start=\"1949\" data-end=\"1994\"\u003e- Thermal Stability for Harsh Conditions:\u003c\/strong\u003e\u003cbr data-start=\"1994\" data-end=\"1997\"\u003eThe combination of low-expansion fused silica optics and rigid carbon fiber construction minimizes focus shift and mechanical flexure, even under fluctuating environmental temperatures.\u003c\/p\u003e\n\u003cp data-start=\"2186\" data-end=\"2397\"\u003e\u003cstrong data-start=\"2186\" data-end=\"2221\"\u003e- Versatile Scientific Utility:\u003c\/strong\u003e\u003cbr data-start=\"2221\" data-end=\"2224\"\u003eSuitable for infrared astronomy, adaptive optics systems, remote sensing, and free-space optical communication projects requiring high image fidelity and precise tracking.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"Default Title","offer_id":49937788600608,"sku":"170120Q","price":31000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_2025-09-16_103722449.png?v=1758044242","url":"https:\/\/firstlightastro.com\/products\/irdk17-telescope","provider":"First Light Astro","version":"1.0","type":"link"}