{"product_id":"planewave-irdk-24-ota","title":"PLANEWAVE IRDK 24\" OTA","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrices do not include shipping costs. Contact us for exact shipping prices before purchasing.\u003c\/strong\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003ePlaneWave Instruments IRDK24\u003c\/strong\u003e is an infrared-optimized Dall-Kirkham telescope for \u003cstrong\u003eadvanced astronomical research \u003c\/strong\u003eand environmental \u003cstrong\u003eLIDAR \u003c\/strong\u003eapplications. With \u003cstrong\u003egold-plated\u003c\/strong\u003e fused silica mirrors with no refractive lenses, the IRDK24 averages \u003cstrong\u003e94% reflectivity across 0.7 - 2.5 microns \u003c\/strong\u003e(700 - 2500nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe IRDK24 excels in infrared astronomy thanks to its \u003cstrong\u003elarge aperture and IR-optimized optics\u003c\/strong\u003e. In addition to studying astrophysical phenomena in the infrared, the IRDK series offer a robust platform for LIDAR and remote sensing operations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon fibre tube \u003c\/strong\u003eminimizes thermal expansion, which causes focus shift as temperature changes during an imaging session. Carbon fibre also reaches ambient temperatures quickly and is extremely lightweight and rigid to help ensure excellent imaging data is produced.\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail expansion joint \u003c\/strong\u003eallows \u003cspan\u003efor the difference in thermal expansion between carbon fiber and aluminium. The expansion joint allows the aluminium dovetail to expand and contract without stressing the carbon fiber lower truss.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eIntegrated dew control \u003c\/strong\u003eincluding heater pads controllable via PlaneWave's software and the Delta-T controller (sold separately) keep the optical surfaces clear of dew, ensuring consistent and clear imaging performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree cooling fans \u003c\/strong\u003eblow out of the optical tube pulling air through the telescope and by the primary mirror. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a switch on the optical tube, or can be controlled by via PWI3 software.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAll PlaneWave telescopes feature the following ports for dew heater and fan management:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eTwo RCA connectors to power the dew heater (from the Delta T or from a 12V source)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOne RJ connector for the Delta T to the telescope to transmit temperature data\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOne EFA connector to power the fans (EFA to 5.5-2.1 jack included)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOne auxiliary output port\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe built-in dew heaters can be powered by any 12V DC source which has an RCA connector, but the Delta T is required to keep the mirror just above the dew point to avoid overheating and the resulting internal turbulences.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe EFA connector can be powered by the separate EFA controller, any 12V DC source using the supplied EFA to 5.5 x 2.1 jack, or by the Series-5 controller.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"specificationTable\" style=\"width: 99.9886%; height: 176.4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e24\" (610 mm)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eFocal length\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e3974 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eFocal ratio\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eCentral obstruction\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e47%\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eBackfocus from mounting surface\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e364.46 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eOTA length\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e1422 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eOptimal field of view\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e70 mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 68.497%; height: 19.6px;\"\u003eWeight (OTA only)\u003c\/th\u003e\n\u003ctd style=\"width: 29.1893%; height: 19.6px;\"\u003e108.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary mirror\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"specificationTable\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eOptical diameter\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003e610 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eOuter diameter\u003c\/th\u003e\n\u003ctd\u003e622 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eMaterial\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eFused silica (quartz)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eShape\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eProlate ellipsoid\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eCoating\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd\u003eProtected Gold - 94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary mirror\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"specificationTable\" style=\"width: 100.06%; height: 78.4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 30.966%; height: 19.6px;\"\u003eDiameter\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 66.4699%; height: 19.6px;\"\u003e280 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 30.966%; height: 19.6px;\"\u003eMaterial\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 66.4699%; height: 19.6px;\"\u003eFused silica (quartz)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 30.966%; height: 19.6px;\"\u003eShape\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 66.4699%; height: 19.6px;\"\u003eSpherical\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"text-align: left; width: 30.966%; height: 19.6px;\"\u003eCoating\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 66.4699%; height: 19.6px;\"\u003eProtected Gold - 94%\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eIncluded items\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIRDK24 OTA\u003c\/li\u003e\n\u003cli\u003eSpacer Set #240343-1 -5.539\" long spacer installed between the backplate and the focuser to take up some of the IRDK24’s extra backfocus and reduce the torque placed on the focuser mechanism.\u003c\/li\u003e\n\u003cli\u003eOTA cover to protect primary mirror\u003c\/li\u003e\n\u003cli\u003ePrinted instructions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Testar Australia","offers":[{"title":"Default Title","offer_id":48270727250145,"sku":"PW-240120Q","price":136299.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/products\/CDK24.jpg?v=1619339669","url":"https:\/\/www.testar.com.au\/products\/planewave-irdk-24-ota","provider":"Testar Australia","version":"1.0","type":"link"}