{"title":"William Optics Tripods \u0026 Piers","description":"\u003cp\u003eWilliam Optics tripods and piers give a mount a stable, level base. The Pier Mount 90 is a pier for a permanent or semi-permanent setup.\u003c\/p\u003e\u003cp\u003eThe Low Latitude and High Latitude WO Vixen Style Base Mounts are bases matched to your observing latitude range, and the Mortar pier head adapters fit the William Optics Mortar pier to iOptron, Vixen-style and Takahashi mounts or to a standard 3\/8\" screw. Pick the adapter that matches the base of your mount.\u003c\/p\u003e","products":[{"product_id":"william-optics-high-latitude-wo-vixen-style-base-mount","title":"William Optics High Latitude WO Vixen Style Base Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned specifically for the iOptron Skyguider Pro\u003c\/li\u003e\n\u003cli\u003eEnables stable, precise polar alignment at high latitudes\u003c\/li\u003e\n\u003cli\u003eIncludes Vixen-style mounting saddle\u003c\/li\u003e\n\u003cli\u003eAvailable standalone or bundled with counterweight bar extension options\u003c\/li\u003e\n\u003cli\u003eRobust, all-metal construction for rigidity\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\u003eWilliam Optics High Latitude WO Vixen Style Base Mount\u003c\/h2\u003e\n\u003cp\u003eThe William Optics High Latitude Base Mount is a critical, purpose-built upgrade for the iOptron Skyguider Pro, engineered to solve the inherent instability and limited adjustment range of the stock base. This all-metal Vixen-style platform provides a rigid, precise foundation for polar alignment at high latitudes, and can be purchased standalone or as a complete kit with an optional counterweight bar extension for optimal payload balancing.\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\u003eUnlocking High-Latitude Polar Alignment for the iOptron Skyguider Pro\u003c\/h3\u003e\n\u003cp\u003eThe stock iOptron Skyguider Pro base struggles as you move to higher latitudes, often becoming unstable or physically unable to center Polaris in the polar scope. This William Optics base replaces the original component entirely, providing the mechanical stability and extended adjustment range required for accurate polar alignment when the celestial pole is high in the sky, a common situation for observers in the northern US, Canada, and Europe.\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\u003eFlexible Configurations \u0026amp; Optional Counterweight Bar Extension\u003c\/h3\u003e\n\u003cp\u003eWhen loading heavier gear—such as larger DSLR\/mirrorless setups or telephoto lenses—balancing your Skyguider Pro becomes crucial for smooth tracking. Depending on your setup needs, this base can be selected as the standalone unit or bundled in options with a counterweight bar extension. The extension attaches directly to the counterweight shaft on your iOptron SkyGuider Pro, allowing you to achieve precise payload balance without over-stressing the tracker motor.\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\u003eWilliam Optics Base vs. Stock iOptron Base: A Necessary Upgrade\u003c\/h3\u003e\n\u003cp\u003eWhile the stock base is adequate for casual, low-latitude use, the William Optics High Latitude Base is a non-negotiable upgrade for serious astrophotographers seeking precision and stability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Stability:\u003c\/strong\u003e The WO base offers a more rigid, all-metal platform that minimizes flexure compared to the stock unit, especially at the extremes of its travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Latitude Range:\u003c\/strong\u003e Specifically designed for \"high latitude\" use, it provides smooth, precise control where the original base becomes difficult to adjust or bottoms out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Flexibility:\u003c\/strong\u003e Choose the base alone or select option bundles with the counterweight bar extension to suit your specific camera gear and balancing requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat problem does the William Optics High Latitude Base solve for my iOptron Skyguider Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt replaces the standard iOptron base, which can be unstable and lack the necessary range for accurate polar alignment at high latitudes. This William Optics upgrade provides a more robust, stable, and precise platform for long-exposure tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this base come with a counterweight bar extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe base is sold individually as a standalone mount upgrade, or optionally in kit bundles that include the counterweight bar extension. Please review your selected buying option at checkout to confirm whether the extension bar is included with your order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the William Optics High Latitude Base difficult to install on my Skyguider Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, installation is straightforward. It is designed as a direct replacement for the stock base on the iOptron Skyguider Pro and uses the same mounting points for a secure fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this William Optics base fit any other star tracker?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis base is specifically designed and machined for the \u003cstrong\u003eiOptron Skyguider Pro\u003c\/strong\u003e. It is not a universal mount and is not compatible with other trackers like the Sky-Watcher Star Adventurer series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this base help me image the North American Nebula (NGC 7000) from the Canada with my Skyguider Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. From the Canada, high-altitude targets like the North American Nebula require high latitude adjustments where the stock base struggles. The William Optics base provides the rigidity and smooth fine-tuning needed for precise polar alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the William Optics base to get a better alignment on Polaris from a latitude of 50° North?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is exactly the scenario this base was designed for. At 50° North, the stock Skyguider Pro base is operating at its mechanical limit and can be unstable. The William Optics High Latitude Base provides a much more stable and easily adjustable platform for accurately centering Polaris in your polar scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eiOptron Skyguider Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eVixen Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eHigh Latitude Polar Alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCounterweight Extension\u003c\/td\u003e\n\u003ctd\u003eOptional (Available individually or in kit options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eWilliam Optics High Latitude Base Mount\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\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"High Latitude Base","offer_id":52840090927389,"sku":"WO-YG-IO-SG01H-RD","price":381.0,"currency_code":"CAD","in_stock":true},{"title":"High Latitude Base with CW Extension bar","offer_id":52840090960157,"sku":"WO-YG-IO-SG01H-RD-P","price":397.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-High-Latitude-WO-Vixen-Style-Base-Mount-YG-IO-SG01H-1__87984.1596133309.1280.1280.jpg?v=1684339377"},{"product_id":"william-optics-low-latitude-wo-vixen-style-base-mount","title":"William Optics Low Latitude WO Vixen Style Base Mount","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for Low Latitude Observers\u003c\/li\u003e\n\u003cli\u003eSolid Aluminum Alloy Construction\u003c\/li\u003e\n\u003cli\u003ePrecision Altitude \u0026amp; Azimuth Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eVixen-Style Mounting Base\u003c\/li\u003e\n\u003cli\u003eDirect Upgrade for iOptron \u0026amp; Sky-Watcher Star Trackers\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\u003eWilliam Optics Low Latitude WO Vixen Style Base Mount\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Low Latitude Vixen Style Base Mount replaces the notoriously imprecise and flimsy bases included with popular star trackers, solving the most common point of frustration in portable astrophotography. This single upgrade transforms your setup with a solid aluminum alloy platform, featuring robust 20 mm components that allow for smooth, repeatable polar alignment adjustments without backlash or instability.\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\u003eSolid Aluminum Alloy Construction: 20 mm Components for Stability\u003c\/h3\u003e\n\u003cp\u003eUnlike the stock bases which often use inferior materials, this entire mount is machined from aluminum alloy. This provides the rigidity necessary to hold a polar alignment all night, even with a telephoto lens. The substantial 20 mm diameter components and fine-threaded adjustment bolts give you a tactile, secure connection to your tripod and tracker, eliminating the flex and wobble that plague standard-issue mounts.\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\u003ePrecision Polar Alignment: Eliminating Adjustment Frustration\u003c\/h3\u003e\n\u003cp\u003eThe primary function of this base is to make polar alignment easy and accurate. Where the adjustment bolts on stock mounts are known for being coarse and difficult to fine-tune, the William Optics base delivers smooth, controlled motion. You can make minute corrections to altitude and azimuth without overshooting your target, turning a frustrating task into a quick and precise setup procedure.\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\u003eThe Low Latitude Advantage: Stability for Equatorial Trackers\u003c\/h3\u003e\n\u003cp\u003eThis Low Latitude version is engineered specifically for observers located closer to the equator. It arrives pre-set from the factory for the correct latitude range, ensuring maximum stability and adjustment travel for equatorial and tropical locations. For observers in North America or Europe, a separate High Latitude version is available to match your geographic needs.\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\u003eWilliam Optics Base vs. Stock Tracker Mounts: A Necessary Upgrade\u003c\/h3\u003e\n\u003cp\u003eFor owners of the most popular portable trackers, this base is not a luxury—it's the component that allows your tracker to perform to its full potential. The difference in stability and adjustment accuracy is immediately apparent.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock iOptron\/Sky-Watcher Bases:\u003c\/strong\u003e Often criticized for imprecise adjustments, flimsy construction, and a tendency to slip or bind during polar alignment. This makes achieving a high-precision alignment difficult and frustrating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWilliam Optics Base:\u003c\/strong\u003e Machined from solid aluminum alloy for zero flexure. The fine adjustment controls allow for deliberate, minute corrections, making it simple to dial in a perfect alignment that holds securely for the entire imaging session.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of the William Optics Low Latitude Base over the one included with my star tracker?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is a massive improvement in \u003cstrong\u003estability and adjustment precision\u003c\/strong\u003e. The William Optics base is machined from solid aluminum alloy, eliminating the flex and wobble of stock bases. Its fine-threaded controls allow for smooth, tiny adjustments, making accurate polar alignment significantly faster and less frustrating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the Low Latitude or High Latitude William Optics base?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should choose the base that corresponds to your primary imaging location. This \u003cstrong\u003eLow Latitude base\u003c\/strong\u003e is designed for observers closer to the equator. If you live in most of the continental United States, Canada, or Europe, you will likely need the \u003cstrong\u003eHigh Latitude version\u003c\/strong\u003e instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the WO-YG-IO-SG01L base fit my iOptron SkyGuider Pro or Sky-Watcher Star Adventurer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this base is designed as a direct, drop-in replacement for the stock bases on popular trackers, including the iOptron SkyGuider Pro, SkyTracker Pro, and the Sky-Watcher Star Adventurer and Star Adventurer Mini.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eThe manual says adjusting the latitude range is difficult. Should I attempt it on my WO-YG-IO-SG01L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is strongly recommended to purchase the correct version for your latitude rather than attempting to adjust it. While manual adjustment is possible for advanced users, the process is challenging and not well-documented. The base is factory-set for optimal performance within its specified low-latitude range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI live in southern Texas (26°N), will the WO-YG-IO-SG01L be stable enough for a 200mm lens on my Star Adventurer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. Your location is ideal for the Low Latitude version. The solid aluminum construction of the WO-YG-IO-SG01L provides a far more rigid platform than the stock base, which is crucial for preventing trailed stars when using longer focal lengths like a 200mm lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this William Optics base to align my Sky-Watcher tracker to shoot the Eta Carinae Nebula (NGC 3372)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Eta Carinae Nebula is a southern celestial showpiece, making the Low Latitude base essential for observers in the southern hemisphere or near the equator. This base will provide the stability and precise adjustment range needed to accurately align on the south celestial pole for imaging targets like NGC 3372.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWO-YG-IO-SG01L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Diameter\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Design\u003c\/td\u003e\n\u003ctd\u003eLow Latitude Version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eWilliam Optics Low Latitude WO Vixen Style Base Mount\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\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967239319837,"sku":"WO-YG-IO-SG01L","price":330.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Low-Latitude-WO-Vixen-Style-Base-Mount-YG-IO-SG01L-1__82354.1596133310.1280.1280.jpg?v=1684339383"},{"product_id":"william-optics-mortar-pier-head-adapter-3-8-screw-mount","title":"William Optics Mortar Pier Head Adapter - 3\/8\" Screw Mount","description":"\u003cul\u003e\n\t\u003cli\u003eDesigned to fit a 3\/8\" threaded pier.\u003c\/li\u003e\n\t\u003cli\u003eUniversal 3\/8\" thread\u003c\/li\u003e\n\t\u003cli\u003eLimited lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\t\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\t\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\t\u003cli class=\"active\"\u003e\n\t\t\u003cp\u003e\n\t\t\tThe William Optics Mortar Pier Head Adapter with a 3\/8\" screw mount is a sturdy and versatile adapter that securely attaches optical instruments to a 3\/8\" threaded pier, ideal for telescopes, spotting scopes, and cameras.\n\t\t\u003c\/p\u003e\n\t\t\u003cdiv class=\"warning\"\u003e\n\t\t\t\u003cimg alt=\"Disclaimer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/warning-logo.svg?v=1714663206\" width=\"25px\"\u003e\n\t\t\t\u003cp\u003e\n\t\t\t\t\u003cb\u003eStrictly designed to fit a 3\/8\" threaded pier.\u003c\/b\u003e \u003cbr\u003e\n\t\t\t\u003c\/p\u003e\n\t\t\u003c\/div\u003e\n\n\t\t\u003cdiv\u003e\n\t\t\t\u003ch3\u003eBenefits and Features\u003c\/h3\u003e\n\t\t\t\u003chr\u003e\n\t\t\t\u003cdiv class=\"two-columns-section\"\u003e\n\t\t\t\t\u003cdiv class=\"text-side-2\"\u003e\n\t\t\t\t\t\u003cp\u003e\n\t\t\t\t\t\tHere are some key benefits and features of this adapter:\n\t\t\t\t\t\u003c\/p\u003e\n\t\t\t\t\t\u003cul\u003e\n\t\t\t\t\t\t\u003cli\u003eIt provides a secure mount for optical instruments like telescopes, spotting scopes, and cameras.\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eThe plate has four mounting holes for secure attachment to the pier.\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eIt has a universal 3\/8\" thread, making it compatible with any pier system that accepts threaded accessories.\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eIt is specifically designed for use with Mortar Tri-Pier systems, allowing for easy and tool-free installation.\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eThe adapter plate features a sturdy, rugged construction with a corrosion-resistant black powder-coated finish.\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eIt comes with a limited lifetime warranty, ensuring its quality and reliability.\u003c\/li\u003e\n\t\t\t\t\t\u003c\/ul\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\t\u003cdiv class=\"image-side-2\" data-mce-style=\"text-align: start;\" style=\"text-align: start;\"\u003e\n\t\t\t\t\t\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/WO-YG-38-MTAD-BL__02874.1680134231.1280.1280.jpg?v=1684348744\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\u003c\/div\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t\u003cp\u003e\n\t\t\tWilliam Optics offers a limited lifetime warranty on this product.\n\t\t\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44968076116253,"sku":"WO-YG-38-MTAD-BL","price":130.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/WO-YG-38-MTAD-BL__02874.1680134231.1280.1280.jpg?v=1684348744"},{"product_id":"william-optics-pier-mount-90","title":"William Optics Pier Mount 90","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90 kg (198 lbs) Loading Capacity\u003c\/li\u003e\n\u003cli\u003eLightweight 7 kg Aluminum Alloy Construction\u003c\/li\u003e\n\u003cli\u003e100 mm (4\") Diameter Pillar for Maximum Rigidity\u003c\/li\u003e\n\u003cli\u003eIncludes 3\/8\" Adapter for ZWO AM3 \u0026amp; AM5 Mounts\u003c\/li\u003e\n\u003cli\u003e89.3 cm Fixed Height with 15 mm Fine Leveling Adjustment\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\u003eWilliam Optics Pier Mount 90\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Pier Mount 90 provides an unshakable imaging platform with a massive 90 kg (198 lbs) loading capacity built upon a 100 mm (4\") diameter aluminum alloy pillar. Weighing only 7 kg and standing at a working height of 89.3 cm, it delivers the stability of a permanent pier with the transportability required for field use, featuring 15 mm of fine leveling adjustment at each foot.\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 90 kg Payload Capacity in a 7 kg Package\u003c\/h3\u003e\n\u003cp\u003eThe core design achievement of the Pier Mount 90 is its extreme strength-to-weight ratio. The 90 kg (198 lbs) load capacity supports even the largest commercially available telescope systems with dual-scope configurations and heavy imaging trains. At just 7 kg, the pier itself is easily transportable to remote dark-sky sites, eliminating the compromise between stability and portability.\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\u003eThe 100mm Pillar: Engineering for Zero Flexure\u003c\/h3\u003e\n\u003cp\u003eUnlike tripod legs, which can flex and vibrate independently, the Pier Mount 90's single 100 mm (4\") diameter pillar provides superior torsional rigidity. This design is inherently more stable and damps vibrations faster, a critical factor for long-exposure astrophotography, especially in windy conditions. The aluminum alloy construction ensures that this rigidity is achieved without excessive weight, maintaining field usability.\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\u003eField-Ready Ergonomics: 89.3 cm Height and 15mm Leveling\u003c\/h3\u003e\n\u003cp\u003eEngineered for practical use, the pier's stance height of 89.3 cm offers a comfortable viewing position for most telescope types while keeping the system's center of gravity low. For setup on uneven terrain, each of the pier's feet includes 15 mm of precise height adjustment, allowing you to achieve a perfectly level platform without shims or guesswork. This ensures accurate polar alignment and tracking from any location.\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\u003eZWO AM3\/AM5 Ready with 3\/8\" Adapter\u003c\/h3\u003e\n\u003cp\u003eThe William Optics Pier Mount 90 is optimized for modern, high-performance mounts. It ships with a 3\/8\" thread adapter, making it a perfect drop-in solution for the popular ZWO AM3 and AM5 strain wave mounts. For users with other equatorial mounts, optional adapters are available, ensuring broad compatibility and making the Pier Mount 90 a long-term investment for your astrophotography setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary advantage of the William Optics Pier Mount 90 over a heavy-duty tripod?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantage is superior rigidity. The single \u003cstrong\u003e100 mm diameter pillar\u003c\/strong\u003e of the William Optics Pier Mount 90 resists twisting forces and damps vibrations much more effectively than the three separate legs of a tripod. This results in a more stable platform for long-exposure imaging, even with its massive \u003cstrong\u003e90 kg load capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much load can the William Optics Pier Mount 90 handle for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Pier Mount 90 is rated for a substantial \u003cstrong\u003e90 kg (198 lbs)\u003c\/strong\u003e loading capacity. This is more than sufficient for large reflector or refractor systems, including dual-scope setups with heavy cameras, filter wheels, and guide scopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the William Optics Pier Mount 90 compatible with my ZWO AM5 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The William Optics Pier Mount 90 includes a \u003cstrong\u003e3\/8\" thread adapter\u003c\/strong\u003e specifically designed for direct compatibility with the ZWO AM5, as well as the AM3. It provides a secure, seamless connection right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the William Optics Pier Mount 90 with mounts other than the ZWO AM3\/AM5?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While it comes standard with an adapter for ZWO mounts, the specification states that adapters for \u003cstrong\u003emore EQ Mount types are optional\u003c\/strong\u003e. You can purchase different adapters to fit a wide variety of equatorial mounts from other manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow stable is the William Optics Pier Mount 90 for imaging with a large 11\" SCT on a windy night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Pier Mount 90 is an excellent choice for this scenario. Its \u003cstrong\u003e100 mm pillar\u003c\/strong\u003e provides exceptional resistance to the kind of low-frequency vibrations caused by wind that can ruin long exposures. With a \u003cstrong\u003e90 kg capacity\u003c\/strong\u003e, an 11\" SCT is well within its stable limits, offering a significant improvement over most field tripods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI set up on uneven ground. How does the William Optics Pier Mount 90 help with leveling?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Pier Mount 90 is designed for field use on imperfect surfaces. Each of its feet has a \u003cstrong\u003e15 mm adjustable height range\u003c\/strong\u003e. This allows you to independently raise or lower each foot to achieve a perfectly level platform, which is essential for accurate polar alignment, without needing to carry extra leveling blocks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoading Capacity\u003c\/td\u003e\n\u003ctd\u003e90 kg \/ 198 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eapprox. 7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePillar Diameter\u003c\/td\u003e\n\u003ctd\u003e100 mm \/ 4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (Stance)\u003c\/td\u003e\n\u003ctd\u003e89.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (Closed)\u003c\/td\u003e\n\u003ctd\u003e79.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoot Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Adapter\u003c\/td\u003e\n\u003ctd\u003e3\/8\" Thread (for ZWO AM3\/AM5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Adapters\u003c\/td\u003e\n\u003ctd\u003eAvailable for more EQ Mount types\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eWilliam Optics Pier Mount 90\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3\/8\" Mount Adapter\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\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":51038607376669,"sku":"WO-YG-PM-90R","price":1488.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/WO-PM-90R-1.jpg?v=1773428944"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/william-optics-tripods-and-piers.oembed","provider":"David Astro","version":"1.0","type":"link"}