{"product_id":"starizona-cool-edge-sct-cooler","title":"Starizona Cool Edge - SCT Cooler","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eActively cools SCT optics to ambient temperature in minutes\u003c\/li\u003e\n\u003cli\u003eDesigned for Celestron EdgeHD and Fastar-compatible telescopes\u003c\/li\u003e\n\u003cli\u003eFront-mounted design bypasses internal EdgeHD lens elements\u003c\/li\u003e\n\u003cli\u003eAttaches easily to the secondary mirror holder (Fastar port)\u003c\/li\u003e\n\u003cli\u003eUses filtered air to prevent dust from entering the optical tube\u003c\/li\u003e\n\u003cli\u003eCompact 4.0\" diameter by 3.75\" tall housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eStarizona Cool Edge - SCT Cooler\u003c\/h2\u003e\n\u003cp\u003eThe Starizona Cool Edge rapidly stabilizes your telescope's optics by eliminating internal tube currents, a critical step for achieving sharp, high-contrast views. This innovative front-mounted cooler, measuring a compact 4.0\" in diameter by 3.75\" tall, is the definitive thermal solution for Celestron's EdgeHD and other Fastar-compatible Schmidt-Cassegrain telescopes from 8\" to 14\" in aperture. By actively circulating filtered, ambient-temperature air through the optical tube, the Cool Edge ensures your mirror temperature matches the outside air in just minutes, preventing the image-degrading thermal plumes that can ruin an observing or imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEliminating Tube Currents in 8\" to 14\" SCTs\u003c\/h3\u003e\n\u003cp\u003eThe primary barrier to a sharp image in any SCT is the temperature difference between the primary mirror and the ambient air. As warm air rises off the mirror, it creates \"tube currents\"—thermals inside the optical tube that act like localized atmospheric seeing, blurring fine details on planets and softening star images. The Cool Edge is designed to solve this problem for a wide range of Celestron SCTs, with models available for 8\", 9.25\", 11\", and 14\" apertures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFront-Mounted Cooling via the Fastar Port\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional coolers that attempt to push air from the rear of the telescope, the Cool Edge works from the front. It attaches directly to the Fastar-compatible secondary mirror housing, a process as simple as installing a HyperStar lens. You simply unthread the secondary mirror, attach the Cool Edge, and then re-thread the secondary onto the cooler itself. This allows the unit to draw in ambient air and direct it down the baffle tube, creating a steady, laminar flow across the primary mirror.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Compact 4.0\" x 3.75\" Filtered Air System\u003c\/h3\u003e\n\u003cp\u003eMeasuring just 4.0\" in diameter and 3.75\" tall, the Cool Edge adds minimal obstruction or weight to the front of your telescope. The fan is housed within a durable body that includes an integrated filter. This is a critical feature, as it ensures that the air being pulled into your optical tube is free of dust, pollen, and other particulates, protecting your primary mirror and corrector plate from contamination during the cooling process.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCool Edge vs. Rear-Cell Coolers: The EdgeHD Solution\u003c\/h3\u003e\n\u003cp\u003eWhile standard SCTs can use rear-mounted coolers, the Celestron EdgeHD design presents a unique challenge: its internal baffle tube contains lens elements that block airflow from the back. The Cool Edge was specifically engineered to overcome this limitation. It creates an airflow path that works in harmony with the EdgeHD design, pulling air in the front and exhausting it through the filtered rear-cell vents built into every EdgeHD optical tube. For non-EdgeHD Fastar scopes, the same airflow is achieved by simply leaving the visual back open, allowing the air to exit freely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Starizona Cool Edge work on an 8\" EdgeHD telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn an 8\" EdgeHD, the Cool Edge attaches to the front Fastar port. It pulls filtered air past the secondary mirror, down the main baffle, and across the primary mirror. The air then exits through the integrated vents in the telescope's rear cell, rapidly equalizing the temperature of the optics with the outside air and eliminating image-blurring tube currents.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Cool Edge on a standard Celestron 8\" SCT that isn't an EdgeHD?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, provided your standard SCT is \u003cstrong\u003eFastar-compatible\u003c\/strong\u003e. The Cool Edge attaches to the secondary mirror assembly, which is removable on all Fastar scopes. To ensure proper airflow on a non-EdgeHD model, you must leave the visual back open (by removing the diagonal or any other accessory) to allow the air to exit the tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow long does the Cool Edge take to cool down my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Cool Edge is designed for rapid stabilization, bringing your telescope's optics to ambient temperature in just a matter of minutes. The exact time depends on the starting temperature difference and the size of your telescope, but it is significantly faster than passive cooling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the installation process for the Cool Edge?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward and requires no tools:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1. Remove the secondary mirror:\u003c\/strong\u003e Carefully unthread your telescope's secondary mirror assembly from the corrector plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2. Attach the Cool Edge:\u003c\/strong\u003e Thread the Cool Edge cooler onto the corrector plate where the secondary was.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3. Reattach the secondary mirror:\u003c\/strong\u003e Thread the secondary mirror assembly onto the front of the Cool Edge unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4. Power on:\u003c\/strong\u003e Connect the appropriate power supply to begin cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Cool Edge help with imaging planets like Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. High-resolution planetary imaging is extremely sensitive to thermal turbulence inside the optical tube. By eliminating tube currents, the Cool Edge provides a much steadier, sharper image, allowing you to resolve finer details like cloud bands on Jupiter or the Cassini Division in Saturn's rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Cool Edge require an AC or DC power source?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Starizona Cool Edge is available in different versions, each configured for either AC (wall outlet) or DC (field battery\/power tank) power. You must select the appropriate power option for your intended use when purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.0\" diameter x 3.75\" tall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCelestron EdgeHD \u0026amp; Fastar-Compatible SCTs (8\", 9.25\", 11\", 14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Options\u003c\/td\u003e\n\u003ctd\u003eAC or DC versions available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCool Edge SCT Cooler\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/starizona-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarizona Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starizona","offers":[{"title":"C8 \/ AC","offer_id":68033928134941,"sku":"STZ-COOL-HD8-AC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C8 \/ DC","offer_id":68033928167709,"sku":"STZ-COOL-HD8-DC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C9.25 \/ AC","offer_id":68033928200477,"sku":"STZ-COOL-HD925-AC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C9.25 \/ DC","offer_id":68033928233245,"sku":"STZ-COOL-HD925-DC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C11 \/ AC","offer_id":68033928266013,"sku":"STZ-COOL-HD11-AC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C11 \/ DC","offer_id":68033928298781,"sku":"STZ-COOL-HD11-DC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C14 \/ AC","offer_id":68033928331549,"sku":"STZ-COOL-HD14-AC","price":265.0,"currency_code":"CAD","in_stock":true},{"title":"C14 \/ DC","offer_id":68033928364317,"sku":"STZ-COOL-HD14-DC","price":265.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Starizona-Cool-Edge-SCT-Cooler-8-1_5d4918ce-7951-41bd-8d00-7ade7b795440.jpg?v=1794375650","url":"https:\/\/davidastro.com\/products\/starizona-cool-edge-sct-cooler","provider":"David Astro","version":"1.0","type":"link"}