{"title":"Spacers","description":"","products":[{"product_id":"securefit-low-profile-spacer-part-2-of-2","title":"SecureFit Low Profile Spacer (Part 2 of 2)","description":"\u003cp\u003eThe 600327\/600328 are stacked together and occupy a total of 0.50 inches of backfocus.\u003c\/p\u003e\n\u003cp\u003eEach is sold separately.\u003c\/p\u003e\n\u003cp\u003eThese adapters are a way to use minimal backfocus for bolting SecureFit-compatible parts.\u003c\/p\u003e\n\u003cp\u003eFits the IRF90 and 3.5″ version Hedrick focuser. *Not compatible with smaller CDK12.5 Hedrick focuser.\u003c\/p\u003e\n\u003c!----\u003e","brand":"PlaneWave Instruments","offers":[{"title":"Default Title","offer_id":48975854666016,"sku":"600328","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/600327_1_9ab5175f-8edf-4d2b-bdd1-9fa9b2075c55.webp?v=1721256847"},{"product_id":"securefit-1-4-inch-extender","title":"SecureFit 1\/4 inch Extender","description":"\u003ch3 data-start=\"1410\" data-end=\"1445\"\u003e\u003cstrong data-start=\"1414\" data-end=\"1445\"\u003eSecureFit 1\/4 Inch Extender\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1447\" data-end=\"1652\"\u003eThis 0.25\" SecureFit extender is used to fine-tune spacing in the imaging train. It is ideal when exact backfocus distances are required and integrates seamlessly with other PlaneWave SecureFit components.\u003c\/p\u003e\n\u003c!----\u003e","brand":"PlaneWave Instruments","offers":[{"title":"Default Title","offer_id":48975855583520,"sku":"6003160","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/200377.webp?v=1721256920"},{"product_id":"securefit-spacer","title":"SecureFit Spacers For CDK 14, 17, 20, \u0026 24","description":"\u003cp data-start=\"178\" data-end=\"253\"\u003e\u003cstrong data-start=\"178\" data-end=\"253\"\u003ePlaneWave Secure Fit Spacers – Precision Backfocus for CDK14–24 Systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"255\" data-end=\"602\"\u003eEngineered for secure, precision imaging setups, PlaneWave Secure Fit Spacers provide optimal backfocus spacing when attaching CCD cameras to CDK14, CDK17, CDK20, and CDK24 telescopes. These robust spacers bolt directly to the PlaneWave Hedrick and IRF90 Focusers via four screws, ensuring a tight, slip-free connection for heavy imaging payloads.\u003c\/p\u003e\n\u003cp data-start=\"604\" data-end=\"794\"\u003eWhen paired with a PlaneWave Secure Fit CCD Adapter, these spacers virtually eliminate movement, sag, or accidental detachment—making them ideal for observatories and remote imaging systems.\u003c\/p\u003e\n\u003cp data-start=\"796\" data-end=\"1078\"\u003e\u003cstrong data-start=\"796\" data-end=\"818\"\u003eKey Specifications\u003c\/strong\u003e\u003cbr data-start=\"818\" data-end=\"821\"\u003e\u003cstrong data-start=\"821\" data-end=\"839\"\u003eCompatibility:\u003c\/strong\u003e CDK14, CDK17, CDK20, CDK24\u003cbr data-start=\"866\" data-end=\"869\"\u003e\u003cstrong data-start=\"869\" data-end=\"891\"\u003eIncompatible With:\u003c\/strong\u003e CDK12.5 (uses different bore size)\u003cbr data-start=\"926\" data-end=\"929\"\u003e\u003cstrong data-start=\"929\" data-end=\"952\"\u003eMounting Interface:\u003c\/strong\u003e 4-screw secure mount to Hedrick and IRF90 Focusers\u003cbr data-start=\"1003\" data-end=\"1006\"\u003e\u003cstrong data-start=\"1006\" data-end=\"1025\"\u003eLength Options:\u003c\/strong\u003e 2.1″, 3.8″, 4.5″, 5.2″, 5.9″, 6.75″, 7.5″, and 8.25″\u003c\/p\u003e\n\u003cp data-start=\"1080\" data-end=\"1525\"\u003e\u003cstrong data-start=\"1080\" data-end=\"1110\"\u003ePerformance \u0026amp; Applications\u003c\/strong\u003e\u003cbr data-start=\"1110\" data-end=\"1113\"\u003e\u003cstrong data-start=\"1113\" data-end=\"1141\"\u003e- Rigid Camera Mounting:\u003c\/strong\u003e Secure, vibration-resistant attachment for heavy cameras and filter wheels\u003cbr data-start=\"1216\" data-end=\"1219\"\u003e\u003cstrong data-start=\"1219\" data-end=\"1242\"\u003e- Backfocus Tuning:\u003c\/strong\u003e Easily achieve critical backfocus spacing in imaging configurations\u003cbr data-start=\"1310\" data-end=\"1313\"\u003e\u003cstrong data-start=\"1313\" data-end=\"1337\"\u003e- Slip-Free Imaging:\u003c\/strong\u003e Designed to prevent camera droop or slippage over long imaging sessions\u003cbr data-start=\"1409\" data-end=\"1412\"\u003e\u003cstrong data-start=\"1412\" data-end=\"1448\"\u003e- Observatory-Grade Reliability:\u003c\/strong\u003e Built for installations where long-term, unattended stability is essential\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"2.1\"","offer_id":49937794105632,"sku":"200361-2","price":290.0,"currency_code":"USD","in_stock":true},{"title":"3.8\"","offer_id":49937794072864,"sku":"200361-2","price":290.0,"currency_code":"USD","in_stock":true},{"title":"4.5\"","offer_id":49937794138400,"sku":"200361-3","price":290.0,"currency_code":"USD","in_stock":true},{"title":"5.2\"","offer_id":49937794171168,"sku":"200361-4","price":290.0,"currency_code":"USD","in_stock":true},{"title":"5.9\"","offer_id":49937794203936,"sku":"200361-5","price":320.0,"currency_code":"USD","in_stock":true},{"title":"6.75\"","offer_id":49937794236704,"sku":"200361-6","price":320.0,"currency_code":"USD","in_stock":true},{"title":"7.5\"","offer_id":49937794269472,"sku":"200361-7","price":345.0,"currency_code":"USD","in_stock":true},{"title":"8.25\"","offer_id":49937794302240,"sku":"200361-8","price":345.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/200361-1.jpg?v=1745881655"},{"product_id":"securefit-1-4-inch-extender-copy","title":"SecureFit 1\/2 Inch Extender","description":"\u003ch3 data-start=\"1659\" data-end=\"1694\"\u003e\u003cstrong data-start=\"1663\" data-end=\"1694\"\u003eSecureFit 1\/2 Inch Extender\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1696\" data-end=\"1888\"\u003eThis 0.5\" extender adds precise spacing for SecureFit-compatible systems. Designed to meet the demanding tolerances of astrophotography setups requiring small adjustments in focal positioning.\u003c\/p\u003e\n\u003c!----\u003e","brand":"PlaneWave Instruments","offers":[{"title":"Default Title","offer_id":50719394857248,"sku":"200377","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_2025-09-19_130535340.png?v=1758312336"},{"product_id":"securefit-spacers-for-cdk-14-17-20-24-copy","title":"Secure Fit Spacer for CDK12.5","description":"\u003ch3 data-start=\"2378\" data-end=\"2415\"\u003e\u003cstrong data-start=\"2382\" data-end=\"2415\"\u003eSecure Fit Spacer for CDK12.5\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2417\" data-end=\"2630\"\u003eDesigned specifically for the CDK12.5, this SecureFit spacer ensures the proper optical spacing and eliminates flex or sag. It's an essential adapter when mounting cameras or accessories directly to the backplate.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"2.5\"","offer_id":50719423463712,"sku":"125357-3","price":290.0,"currency_code":"USD","in_stock":true},{"title":"3.5\"","offer_id":50719423496480,"sku":"125357-2","price":290.0,"currency_code":"USD","in_stock":true},{"title":"4.8\"","offer_id":50719421333792,"sku":"125357-1","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_2025-09-19_132250905.png?v=1758313371"},{"product_id":"secure-fit-spacer-for-cdk12-5-copy","title":"2″ Slip-Fit Spacers","description":"\u003ch3 data-start=\"2378\" data-end=\"2415\"\u003e\u003cstrong data-start=\"2382\" data-end=\"2415\"\u003eSecure Fit Spacer for CDK12.5\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2417\" data-end=\"2630\"\u003eDesigned specifically for the CDK12.5, this SecureFit spacer ensures the proper optical spacing and eliminates flex or sag. It's an essential adapter when mounting cameras or accessories directly to the backplate.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"2.5\"","offer_id":50719425233184,"sku":"125357-3","price":290.0,"currency_code":"USD","in_stock":true},{"title":"3.5\"","offer_id":50719425265952,"sku":"125357-2","price":290.0,"currency_code":"USD","in_stock":true},{"title":"4.8\"","offer_id":50719425298720,"sku":"125357-1","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_2025-09-19_132250905.png?v=1758313371"},{"product_id":"2-slip-fit-spacers-copy","title":"2″ Slip-Fit Spacers","description":"\u003ch3 data-start=\"1895\" data-end=\"1922\"\u003e\u003cstrong data-start=\"1899\" data-end=\"1922\"\u003e2\" Slip-Fit Spacers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1924\" data-end=\"2141\"\u003eThese slip-fit spacers offer a convenient, modular way to adjust backfocus spacing in 2\" drawtube focusers. Available in a variety of lengths, they simplify setup of CCD cameras, filter wheels, or eyepiece assemblies.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"2.8.\"","offer_id":50719425593632,"sku":"200368-2","price":160.0,"currency_code":"USD","in_stock":true},{"title":"3.3\"","offer_id":50719425659168,"sku":"200368-3","price":160.0,"currency_code":"USD","in_stock":true},{"title":"3.85\"","offer_id":50719425626400,"sku":"200368-1","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_2025-09-19_132705835.png?v=1758313626"},{"product_id":"2-slip-fit-spacers-copy-1","title":"Extension Spacer for 7.125″ Flange Interface","description":"\u003ch3 data-start=\"575\" data-end=\"627\"\u003e\u003cstrong data-start=\"579\" data-end=\"627\"\u003eExtension Spacer for 7.125\" Flange Interface\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"629\" data-end=\"865\"\u003eThe Extension Spacer allows precise backfocus adjustment on systems that utilize the 7.125\" SecureFit flange interface. Available in various lengths, it is ideal for fine-tuning your imaging train or integrating third-party accessories.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"0.5\"","offer_id":50719430574368,"sku":"6003165","price":425.0,"currency_code":"USD","in_stock":true},{"title":"1\"","offer_id":50719430607136,"sku":"6003166","price":472.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/PW_Logo_BlackText_WhiteBG.png?v=1770439886"},{"product_id":"extension-spacer-for-7-125-flange-interface-copy","title":"CDK24 to IRF90\/Hedrick Focuser Spacer","description":"\u003ch3 data-start=\"277\" data-end=\"322\"\u003e\u003cstrong data-start=\"281\" data-end=\"322\"\u003eCDK24 to IRF90\/Hedrick Focuser Spacer\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"324\" data-end=\"568\"\u003eThis adapter spacer is designed to securely bridge the CDK24 telescope to the IRF90 or 3.5\" Hedrick focuser. It ensures proper optical spacing and structural integration when connecting high-precision focusers to large-aperture optical systems.\u003c\/p\u003e","brand":"PlaneWave Instruments","offers":[{"title":"3.259\"","offer_id":50719435718944,"sku":"240343-3","price":460.0,"currency_code":"USD","in_stock":true},{"title":"4.109\"","offer_id":50719435751712,"sku":"240343-2","price":460.0,"currency_code":"USD","in_stock":true},{"title":"5.539","offer_id":50719437259040,"sku":"240343-1","price":460.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/PW_Logo_BlackText_WhiteBG.png?v=1770439886"},{"product_id":"cdk24-to-irf90-hedrick-focuser-spacer-copy","title":"CDK1000 Focuser to CDK OTA Backplate","description":"\u003ch3 data-start=\"872\" data-end=\"916\"\u003e\u003cstrong data-start=\"876\" data-end=\"916\"\u003eCDK1000 Focuser to CDK OTA Backplate\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"918\" data-end=\"1133\"\u003eThis spacer adapter enables connection between the PlaneWave 1-Meter telescope's focuser and the CDK backplate. 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