{"product_id":"planewave-cdk12-5-astrograph-f-8-125101","title":"PlaneWave CDK12.5 Astrograph f\/8 (125104Q)","description":"\u003ch1\u003ePlaneWave CDK12.5 Astrograph f\/8\u003c\/h1\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe CDK12.5 is an innovative telescope for unsurpassed astroimaging, research, or satellite tracking.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003ef\/8 and 2541mm focal length.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003eNo coma, no off-axis astigmatism, and no field curvature.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003ePinpoint stars across a 52mm image circle.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003eRock solid fused silica mirrors with low thermal expansion.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003eCarbon fiber optical tube assembly for rigidity and fast cooling.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e\u003cstrong\u003eSimple secondary mirror collimation thanks to the fixed primary mirror.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCapturing the most stunning astrophotographs possible is something our team is passionate about. From design to manufacture, our goal with the Corrected Dall-Kirkham (CDK) 12.5″ telescope was centered around performance and ease of use. The CDK12.5 is an incredible breakthrough in telescope technology and produces no off-axis coma and no off-axis astigmatism. Additionally, the CDK12.5 provides a perfectly flat field so your astrophotographs will have stunning clarity from corner to corner of the image without field curvature degrading the photos. Offering the simplicity of single-mirror collimation, the stray light control of advanced baffles, structural performance created through finite element analysis (FEA), and decades of telescope design experience, the CDK12.5 is an exceptional diffraction-limited telescope. CDK12.5 users can experience pinpoint stars edge-to-edge and a 70 x 70 arcminute field of view when using large 16803 size camera sensors. When equipment fades into the background and simply performs, the astrophotography experience becomes even more fun and rewarding!\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cdiv class=\"row justify-content-center\"\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003cp\u003e\u003cstrong\u003eCarbon Fiber Tube Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv style=\"text-align: left;\" class=\"col-md-3 image\"\u003e\u003cimg height=\"211\" width=\"284\" style=\"float: left;\" src=\"https:\/\/planewave.com\/wp-content\/uploads\/2018\/02\/PW-CDK125-15-e1611284339909.jpg\" alt=\"Icon\" class=\"lazyloaded\" data-ll-status=\"loaded\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eMinimizes thermal expansion which causes focus shift as temperature changes during an imaging session. Carbon fiber also reaches ambient temperatures quickly and is extremely lightweight and rigid to help ensure excellent imaging data is produced.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003cp\u003e\u003cstrong\u003eDovetail Expansion Joint\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv style=\"text-align: left;\" class=\"col-md-3 image\"\u003e\u003cimg height=\"160\" width=\"236\" style=\"float: left;\" src=\"https:\/\/planewave.com\/wp-content\/uploads\/2018\/02\/expansion-joint-295x200.jpg\" alt=\"Icon\" class=\"lazyloaded\" data-ll-status=\"loaded\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eAllows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail to expand and contract without stressing the carbon fiber lower truss. This results in images that are not distorted due to expansion, or contraction of the optical tube materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch4\u003e2.75-inch Hedrick Focuser\u003c\/h4\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv style=\"text-align: left;\" class=\"col-md-3 image\"\u003e\u003cimg height=\"183\" width=\"234\" style=\"float: left;\" src=\"https:\/\/planewave.com\/wp-content\/uploads\/2018\/09\/Hedrick-Focuser-384x300_new.png\" alt=\"Icon\" class=\"lazyloaded\" data-ll-status=\"loaded\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eHeavy-duty no-slip focuser with 1.3\" of drawtube travel when fully racked out. The focus tube runs on 5 bearings and is driven by a leadscrew, so there is no chance of slipping. Focusing is automated through PlaneWave Interface 3 (PWI3) software when using the sold separately PlaneWave Electronic Focuser Accessory. PWI3 performs fast and extremely accurate autofocusing routines to ensure your images are always at critical focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"block-feature col-sm-12\"\u003e\n\u003cp\u003e\u003cstrong\u003eCooling Fans\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv style=\"text-align: left;\" class=\"col-md-3 image\"\u003e\u003cimg height=\"193\" width=\"261\" style=\"float: left;\" src=\"https:\/\/planewave.com\/wp-content\/uploads\/2018\/02\/PW-CDK125-21-e1611284539418.png\" alt=\"Icon\" class=\"lazyloaded\" data-ll-status=\"loaded\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-md-9 col_content\"\u003e\n\u003cp\u003eThree fans blow 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 if a PlaneWave Electronic Focus Accessory (EFA Kit) is purchased.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImages taken with a planewave\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7635_Bubble_Nebula_2_480x480.webp?v=1676066599\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7635_Bubble_nebula_3_480x480.webp?v=1676066610\" alt=\"\"\u003e\u003cimg data-mce-fragment=\"1\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7380_Wizard_nebula_480x480.webp?v=1676066622\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7380_Wizard_nebula_480x480.webp?v=1676066622\"\u003e\u003cimg data-mce-fragment=\"1\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7023_iris_Nebula_480x480.webp?v=1676066633\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NGC7023_iris_Nebula_480x480.webp?v=1676066633\"\u003e\u003cimg data-mce-fragment=\"1\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Sunflower_Galaxy_480x480.webp?v=1676066644\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Sunflower_Galaxy_480x480.webp?v=1676066644\"\u003e\u003cimg data-mce-fragment=\"1\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/VBD142_480x480.webp?v=1676066654\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/VBD142_480x480.webp?v=1676066654\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eOptical System\u003cbr\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e12.5 inch (318 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2541 mm (100.04 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCentral Obstruction\u003c\/td\u003e\n\u003ctd\u003e42% of the primary mirror diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eBack Focus from Mounting Surface\u003c\/td\u003e\n\u003ctd\u003e10.445 inch (265 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eBack Focus from Racked in Focuser\u003c\/td\u003e\n\u003ctd\u003e7.2 inch (183 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e31 inch (787 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Tube\u003c\/td\u003e\n\u003ctd\u003eCarbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/planewave.com\/wp-content\/uploads\/downloads\/2013\/05\/125101DIM-A.pdf\"\u003eOverall Dimensions (PDF)\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWeight (includes manual-focuser and dovetail)\u003c\/td\u003e\n\u003ctd\u003e46 lbs (20.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWeight (includes electronic-focuser and dovetail)\u003c\/td\u003e\n\u003ctd\u003e48.5 lbs (22.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptimal Field of View\u003c\/td\u003e\n\u003ctd\u003e52mm image circle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cstrong\u003eSecondary Mirror\u003cbr\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e4.65 inch (118 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cstrong\u003ePrimary Mirror\u003cbr\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOptical Diameter\u003c\/td\u003e\n\u003ctd\u003e12.5 inch (318 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e13 inch (330 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eShape\u003c\/td\u003e\n\u003ctd\u003eProlate ellipsoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica (quartz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eEnhanced aluminum – 96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cstrong\u003eLens Group\u003cbr\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e70 mm (2.76 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eNumber of lenses\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBroadband AR coatings (less than .5% reflected from 400 to 700nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\n\u003cstrong\u003eShipping\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"1\" width=\"442\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCrated Shipping Weight\u003c\/td\u003e\n\u003ctd\u003e163 lbs   (73.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCrate Width\u003c\/td\u003e\n\u003ctd\u003e22 inch   (559 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCrate Height\u003c\/td\u003e\n\u003ctd\u003e29 inch   (737 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCrate Length\u003c\/td\u003e\n\u003ctd\u003e48 inch   (1,219 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"1\" width=\"848\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eMotorized 2.75″ Hedrick Focuser\u003c\/td\u003e\n\u003ctd\u003eOffers 1.3″ of focuser travel and takes up 3″ of backfocus. Requires the 125901 EFA kit sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eHeating elements for dew prevention\u003c\/td\u003e\n\u003ctd\u003eThe heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eOTA Cover\u003c\/td\u003e\n\u003ctd\u003eTo protect the primary mirror and inside of the optical tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eFlashdrive\u003c\/td\u003e\n\u003ctd\u003eContains software and instructions for collimation and spacing the primary to secondary mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eCable connector for fan power\u003c\/td\u003e\n\u003ctd\u003eProvides a connection method for powering for the fans if the user does not have the 125901 EFA kit. User must provide 12VDC powersupply 2.1 barrel jack connector that is center positive. (Not included for European orders)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\"\u003eWrench Set (5812A35)\u003c\/td\u003e\n\u003ctd\u003eStandard hex wrenches (European orders only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/planewave-warranty\" target=\"_blank\"\u003ePlanewave Warranty (O\u003cspan data-mce-fragment=\"1\"\u003ene year for optical coatings and Two years mechanics and electronics from the date of delivery)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/planewave.com\/download\/cdk12-5-efa-kit-instruction-manual\/\" target=\"_blank\"\u003eCDK12.5 EFA Kit Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"Version downloaded 2039 times\" href=\"http:\/\/planewave.com\/downloads\/get\/12\" target=\"_blank\"\u003ePiggyback Dovetail Installation Instructions (CDK12.5)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/pw-ecommerce.com\/wp-content\/uploads\/2019\/02\/Collimation-and-Secondary-Spacing-Procedure-for-CDK12_14_17_20_24.pdf\" target=\"_blank\"\u003eCollimation and Spacing Instructions for CDK12.5, 14, 17, 20, and 24\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/pw-ecommerce.com\/wp-content\/uploads\/2019\/02\/Cleaning-the-CDK12-5-Primary.pdf\" target=\"_blank\"\u003eCleaning Optics CDK12.5\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Planewave","offers":[{"title":"Default Title","offer_id":43125774614757,"sku":"PW-125104Q","price":18460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/planewave-cdk12-5-astrograph-f8-125101-astronomy-plus-1.webp?v=1690485422","url":"https:\/\/istronomyplus.com\/products\/planewave-cdk12-5-astrograph-f-8-125101","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}