{"title":"William Optics Pleiades Astrographs","description":"\u003cp\u003eWilliam Optics Pleiades astrographs are seven-element refractors designed for flat, well-corrected fields in deep-sky imaging. The line covers three sizes: the Pleiades 68 at f\/3.8 for very wide fields, the Pleiades 111 at f\/4.8 with WIFD internal focusing, and the Pleiades 181 at f\/5.5 with three ED glasses.\u003c\/p\u003e\u003cp\u003eThey suit imagers who want a fast, integrated optical design instead of a refractor plus a separate flattener or reducer.\u003c\/p\u003e","products":[{"product_id":"william-optics-pleiades-68-astrograph-f-3-8-7-element-wifd","title":"William Optics Pleiades 68 Astrograph F\/3.8 7-Element WIFD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e68mm Aperture 7-Element Astrograph\u003c\/li\u003e\n\u003cli\u003eFast f\/3.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e260mm Focal Length\u003c\/li\u003e\n\u003cli\u003e48mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eWeighs only 2.98 kg (6.57 lbs)\u003c\/li\u003e\n\u003cli\u003eWIFD Focuser with EAF Compatibility\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 Pleiades 68 Astrograph F\/3.8 7-Element WIFD\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Pleiades 68 Astrograph combines a fast f\/3.8 optical system with a 68mm aperture to capture vast deep-sky targets in a single frame. Its 7-element design, incorporating three Super ED glass elements, delivers a flat, color-corrected 48mm image circle without requiring an external flattener. With a wide 260mm focal length and an OTA weight of just 2.98 kg, this astrograph is engineered for imagers seeking a portable, high-speed instrument that fully illuminates full-frame sensors.\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\u003ePleiades 68 Optics: A 7-Element, f\/3.8 Design with 3 Super ED Elements\u003c\/h3\u003e\n\u003cp\u003eThis astrograph is built around a sophisticated 7-element optical formula specifically for imaging. The f\/3.8 focal ratio dramatically reduces exposure times, allowing you to collect more data on faint nebulae and galaxies in a single night. Three Super ED glass elements are used to minimize chromatic aberration, ensuring star colors are rendered accurately and pinpoint sharp across the entire field.\u003c\/p\u003e\n\u003cp\u003eThe 260mm focal length provides an expansive field of view ideal for large targets like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex. Because the optical correction is integrated, you don't need to purchase or calculate spacing for a separate flattener, simplifying your imaging train and eliminating a potential source of tilt.\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\u003e48mm Image Circle and WIFD Focuser: Full-Frame Illumination and Stability\u003c\/h3\u003e\n\u003cp\u003eThe Pleiades 68 delivers a corrected and illuminated 48mm image circle, exceeding the requirements of full-frame (36x24mm) sensors and providing ample coverage for APS-C and M4\/3 cameras. This ensures your images are free from vignetting and maintain consistent star shapes from the center to the corners of the frame.\u003c\/p\u003e\n\u003cp\u003eFocusing is managed by the robust William Optics Internal Focuser Design (WIFD), a rack-and-pinion system that moves the optics internally. This design prevents sag and flexure common with heavy camera payloads, maintaining critical focus throughout an imaging session. The focuser is fully compatible with popular electronic auto-focusers (EAF) for automated, repeatable precision.\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 at 2.98 kg: Integrated Rotator, Tilt Adjuster, and Adapters\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability and immediate use, the Pleiades 68 OTA weighs only 2.98 kg (6.57 lbs). The package includes a complete set of accessories to build a rigid imaging train right out of the box. An integrated camera angle rotator allows for precise framing, while the included tilt adjuster lets you dial in perfect sensor orthogonality.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e The dual-side Vixen and Arca-Swiss dovetail plate provides native compatibility with a wide range of equatorial mounts and tripod heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapters:\u003c\/strong\u003e M63 to M48 and M63 to M54 adapters are supplied, ensuring you can connect most dedicated astronomy cameras and DSLRs\/mirrorless cameras with the appropriate T-ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e The astrograph ships in a soft carry case and includes a handle bar, mounting ring, riser blocks, and a Bahtinov mask cap for achieving perfect focus.\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\"\u003eDoes the William Optics Pleiades 68 need a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003ePleiades 68\u003c\/strong\u003e is a 7-element astrograph with an integrated flattener in its optical design. It is engineered to produce a flat field across its entire \u003cstrong\u003e48mm image circle\u003c\/strong\u003e without any additional corrective optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a full-frame camera with the Pleiades 68 Astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Pleiades 68 is designed for full-frame cameras. Its \u003cstrong\u003e48mm image circle\u003c\/strong\u003e provides full illumination for standard 36x24mm sensors, ensuring you can capture images without vignetting. The included M48 and M54 adapters accommodate common connections for full-frame astronomy cameras and DSLRs\/mirrorless bodies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 260mm focal length of the Pleiades 68 frame large targets like the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e260mm focal length\u003c\/strong\u003e, when paired with a full-frame sensor, provides a very wide field of view (approximately 7.8° x 5.2°). This is perfectly suited for framing enormous emission nebulae like the North American Nebula (NGC 7000) and the Veil Nebula complex in their entirety, with room to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the WIFD focuser on the Pleiades 68?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Internal Focuser Design (WIFD) moves the optical elements internally rather than moving the camera externally. This offers two main advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Sag:\u003c\/strong\u003e It creates a more rigid imaging train that is less susceptible to flexure, especially with heavy cameras and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed Length:\u003c\/strong\u003e The overall length of the optical tube does not change during focusing, which can help with balance and clearance on some mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is also compatible with EAF systems for automated focusing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the included tilt adjuster for the Pleiades 68 do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe tilt adjuster allows you to make micro-adjustments to the angle of your camera sensor relative to the optical axis. This is crucial for achieving perfectly sharp stars across the entire frame, as it corrects for any slight tilt that may exist in your camera or focuser connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the 3.83 kg Pleiades 68?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e3.83 kg (8.44 lbs)\u003c\/strong\u003e including rings and dovetail, the Pleiades 68 is very lightweight. It can be carried easily by portable star trackers and smaller equatorial mounts in the 20-25 lb payload class, such as a Sky-Watcher HEQ5 or iOptron CEM26, making it an excellent choice for a mobile imaging setup.\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\u003eLens Type\u003c\/td\u003e\n\u003ctd\u003e7-Element Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Elements\u003c\/td\u003e\n\u003ctd\u003e3x Super ED Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e260 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Format Support\u003c\/td\u003e\n\u003ctd\u003eFull Frame, APS-C, M4\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eWIFD Rack \u0026amp; Pinion, EAF Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlattener Required\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Mount Support\u003c\/td\u003e\n\u003ctd\u003eCanon EF\/RF, Nikon F\/Z, Sony E, Pentax K, MFT, Fuji X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eVixen \/ Arca-Swiss Dual Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e366 mm - 410 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2.98 kg (6.57 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e3.83 kg (8.44 lbs)\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\"\u003ePleiades 68 Main Tube\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\"\u003eBahtinov Mask Cap\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\"\u003eMounting Ring \u0026amp; Handle Bar\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\"\u003eDual-side Vixen\/Arca-Swiss Plate\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\"\u003eCamera Angle Rotator\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\"\u003eTilt Adjuster\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\"\u003eM63 to M48 Adapter\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\"\u003eM63 to M54 Adapter\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\"\u003eRiser Blocks\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Set\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\"\u003eAllen Key Set\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\"\u003eSoft Carry Case\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":48603138654493,"sku":"WO-T-P-68BU","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Pleiades-68-perspective-1_a547ae6a-4742-4cbd-aba3-6ce858e67b9b.webp?v=1717690953"},{"product_id":"william-optics-pleiades-111-astrograph-f-4-8-7-element-wifd","title":"William Optics Pleiades 111 Astrograph F\/4.8 7-element WIFD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e111mm Aperture 7-Element Astrograph\u003c\/li\u003e\n\u003cli\u003e528mm Focal Length at a fast f\/4.8\u003c\/li\u003e\n\u003cli\u003e45mm Image Circle for Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eWilliam Optics Internal Focus Design (WIFD)\u003c\/li\u003e\n\u003cli\u003eIntegrated Rotator and Tilt Adjuster\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 Pleiades 111 Astrograph F\/4.8 7-element WIFD\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Pleiades 111 Astrograph integrates a 7-element optical system into a 111mm aperture to deliver a perfectly flat 45mm image circle without an external flattener. Its fast f\/4.8 focal ratio at a 528mm focal length is engineered for serious astrophotographers, capturing expansive deep-sky targets with full-frame cameras. The entire optical train weighs 10.31 kg and features the William Optics Internal Focus Design (WIFD) for absolute stability with heavy imaging loads.\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\u003eSeptuplet f\/4.8 Optics: A 45mm Flat-Field Imaging System\u003c\/h3\u003e\n\u003cp\u003eThe core of the Pleiades 111 is its 7-element apochromatic lens system, which incorporates three Super ED glass elements to achieve exceptional color correction. This sophisticated design produces a native 45mm image circle that is perfectly flat, eliminating the need for a separate flattener and simplifying your imaging train. At a fast f\/4.8, you can collect more light in less time, revealing faint nebulosity and detail in distant galaxies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Flattener Required:\u003c\/strong\u003e The Petzval-like optical formula corrects for field curvature internally, ensuring sharp, pinpoint stars across a full-frame sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e111mm Aperture at 528mm:\u003c\/strong\u003e This combination provides a wide field of view, ideal for framing large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper ED Glass:\u003c\/strong\u003e Three low-dispersion elements minimize chromatic aberration, resulting in high-contrast images with pure, vibrant star colors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eWIFD Focuser: 35mm of Stable, Internal-Focus Travel\u003c\/h3\u003e\n\u003cp\u003eWilliam Optics' innovative Internal Focus Design (WIFD) eliminates the primary source of flexure in traditional refractors: the moving drawtube. By moving the lens assembly internally over a 35mm travel range, the focuser body remains fixed and rigid. This design maintains perfect optical alignment and supports heavy camera packages without sagging, ensuring consistent focus and round stars throughout your imaging session.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Image Shift:\u003c\/strong\u003e The internal rack-and-pinion mechanism provides smooth, precise focus adjustments without any lateral movement of the image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAF Compatible:\u003c\/strong\u003e The WIFD focuser is fully compatible with popular electronic auto-focusers, enabling automated and repeatable focusing routines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid and Compact:\u003c\/strong\u003e With no external drawtube, the telescope maintains a more compact and stable profile as it slews across the sky.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated Rotator and Tilt Adjuster: Precision Camera Framing\u003c\/h3\u003e\n\u003cp\u003eThe Pleiades 111 is built for precision from the focuser to the sensor. An integrated camera angle rotator allows you to frame your target perfectly without loosening any connections in your imaging train. To achieve flawless corner-to-corner sharpness, a built-in tilt adjuster lets you dial in the orthogonality of your camera sensor to the optical axis, correcting for any minor tilt in your setup.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Camera Rotation:\u003c\/strong\u003e Easily compose your images by rotating the entire camera and filter wheel assembly with a smooth, lockable mechanism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapters:\u003c\/strong\u003e The astrograph ships with both M48 and M54 camera adapters, providing direct, threaded connections for most modern astronomy cameras and DSLRs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLosmandy-Style Dovetail:\u003c\/strong\u003e A robust Losmandy-D dovetail plate provides a secure connection to your equatorial mount, capable of handling the 10.31 kg total weight.\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\"\u003eDo I need to buy a separate flattener for the Pleiades 111 Astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The William Optics Pleiades 111 has a 7-element optical design that corrects for field curvature internally. It produces a native \u003cstrong\u003e45mm flat image circle\u003c\/strong\u003e without requiring any additional flattener or reducer, simplifying your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the advantages of the WIFD internal focuser on the Pleiades 111?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Internal Focus Design (WIFD) moves the lens assembly internally rather than using an external drawtube. This offers two key advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased Rigidity:\u003c\/strong\u003e It prevents focuser sag, which is critical when using heavy cameras, filter wheels, and off-axis guiders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Collimation:\u003c\/strong\u003e By keeping the camera and accessories fixed, it maintains perfect optical alignment as you focus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Pleiades 111's 528mm focal length frame large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e528mm focal length\u003c\/strong\u003e paired with a full-frame sensor provides a wide field of view, approximately 3.9° x 2.6°. This is perfectly suited for capturing the entire Andromeda Galaxy (M31), including its faint outer arms and satellite galaxies M32 and M110, in a single frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the f\/4.8 focal ratio of the Pleiades 111 good for narrowband imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the fast \u003cstrong\u003ef\/4.8 focal ratio\u003c\/strong\u003e is a significant advantage for narrowband imaging. It allows you to gather signal on faint emission nebulae, like the Cygnus Loop or the Heart Nebula (IC 1805), much faster than with slower f\/6 or f\/7 systems, reducing your total exposure time for each filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the William Optics Pleiades 111?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Pleiades 111 has a total weight of \u003cstrong\u003e10.31 kg (22.73 lbs)\u003c\/strong\u003e when fully assembled with rings and dovetail. For stable astrophotography, you should use a German Equatorial Mount with a payload capacity of at least 40 lbs (18 kg) to ensure precise tracking and guiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the included tilt and rotator adapters on the Pleiades 111 do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are critical tools for advanced imaging. The \u003cstrong\u003erotator\u003c\/strong\u003e allows you to change the orientation of your camera to perfectly frame your target without changing focus. The \u003cstrong\u003etilt adjuster\u003c\/strong\u003e lets you make micro-adjustments to the angle of your camera sensor to ensure it is perfectly perpendicular to the light path, guaranteeing sharp stars across the entire field of view.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e7-Element Astrograph with 3x Super ED Glass Elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e111 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e528 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eWIFD Rack \u0026amp; Pinion Internal Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlattener Required\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Support\u003c\/td\u003e\n\u003ctd\u003eFull Frame, APS-C, M4\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Camera Adapters\u003c\/td\u003e\n\u003ctd\u003eM48, M54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eLosmandy-D Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length (Retracted\/Extended)\u003c\/td\u003e\n\u003ctd\u003e645 mm - 785 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e7.95 kg \/ 17.53 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight (inc. rings\/dovetail)\u003c\/td\u003e\n\u003ctd\u003e10.31 kg \/ 22.73 lbs\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\"\u003eTilt Adjuster\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\"\u003eCamera Angle Rotator\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\"\u003eM48 Camera Adapter\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\"\u003eM54 Camera 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":48603506409757,"sku":"WO-T-P-111BU","price":5793.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Pleiades-111-pers-2.webp?v=1717694571"},{"product_id":"william-optics-pleiades-181-astrograph-f-5-5-7-element-wifd","title":"William Optics Pleiades 181 Astrograph F\/5.5 7-element with 3 ED glasses","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e181mm Aperture, 998mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/5.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e7-Element Optical Design with 3 Super ED Glass Elements\u003c\/li\u003e\n\u003cli\u003e55mm Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003e4.1-inch Rack \u0026amp; Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eIntegrated Petzval design requires no additional flattener\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 Pleiades 181 Astrograph f\/5.5\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Pleiades 181 is a dedicated imaging instrument built around a 7-element optical design that delivers a massive 55mm corrected image circle. Its 181mm objective and fast f\/5.5 focal ratio are corrected by three Super ED glass elements, providing a flat, color-pure field across medium format sensors without requiring an external flattener. With a robust 4.1-inch Rack \u0026amp; Pinion focuser and a total weight of 18.7 kg, this astrograph is engineered from the ground up for serious, large-format astrophotography.\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 7-Element, 181mm Optical System for Flat-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThe Pleiades 181 combines a large 181mm aperture with a 998mm focal length, resulting in a fast f\/5.5 system ideal for capturing faint detail in nebulae and galaxies. The optical core is a 7-element Petzval-like design that includes three Super ED glass elements to virtually eliminate chromatic aberration, ensuring stars remain tight, color-neutral points of light.\u003c\/p\u003e\n\u003cp\u003eBecause the field-correcting elements are integrated into the main optical train, the Pleiades 181 produces a natively flat field. This eliminates the need to purchase and correctly space a separate flattener, simplifying your imaging train and guaranteeing optimal correction right out of the box.\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\u003e55mm Image Circle for Medium Format Sensors\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for large-format imaging, the Pleiades 181 illuminates a corrected 55mm image circle. This provides complete, unvignetted coverage for medium format sensors and easily accommodates full-frame, APS-C, and M4\/3 cameras with room to spare.\u003c\/p\u003e\n\u003cp\u003eThe expansive corrected field allows you to frame the largest deep-sky objects without compromise and gives you significant flexibility in composing your shots. For imagers using full-frame or smaller sensors, the edge-to-edge correction ensures perfectly round stars across the entire frame, even on the most demanding, high-resolution cameras.\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\u003eEngineered for Imaging: 4.1-inch Focuser and Integrated Adapters\u003c\/h3\u003e\n\u003cp\u003eTo handle the weight of modern imaging packages, the Pleiades 181 is equipped with a heavy-duty 4.1-inch Rack \u0026amp; Pinion focuser. With 43mm of precise focus travel and native compatibility with popular electronic auto-focusers (EAF), it provides a rigid, repeatable platform for achieving critical focus, even with heavy cameras and filter wheels.\u003c\/p\u003e\n\u003cp\u003eThe astrograph includes a complete set of adapters to streamline camera connection. The package contains M68, M54, and M48 adapters, along with a built-in rotator for framing and a tilt adjuster for perfecting sensor alignment. This comprehensive solution ensures you can connect and optimize your imaging train immediately.\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\u003eRobust Mechanical Design: 18.7 kg Total Weight and Ergonomic Handling\u003c\/h3\u003e\n\u003cp\u003eThe Pleiades 181 is a substantial instrument, with an optical tube assembly weight of 15 kg (33.07 lbs) and a total equipped weight of 18.7 kg (41.23 lbs). This requires a high-capacity equatorial mount to ensure stability and tracking accuracy. The telescope comes with a standard Losmandy-style dovetail plate for secure mounting.\u003c\/p\u003e\n\u003cp\u003eTo aid in handling and setup, the design incorporates William Optics' signature features, including the innovative Cosmos Steering Wheel for easier lifting and positioning. The tube extends from a retracted length of 1231mm to 1496mm with the dew shield in place, providing excellent stray light and moisture protection for the objective lens.\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 class of mount is required for the Pleiades 181 astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e18.7 kg (41.23 lbs)\u003c\/strong\u003e, the Pleiades 181 requires a high-payload equatorial mount. For reliable imaging, a mount with a rated instrument capacity of at least 60-70 lbs (27-32 kg) is strongly recommended to ensure stability and precise tracking with a full camera and guide scope setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the William Optics Pleiades 181 require a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Pleiades 181 uses an integrated \u003cstrong\u003e7-element Petzval-type design\u003c\/strong\u003e where the correcting lenses are part of the main optical assembly. It produces a natively flat \u003cstrong\u003e55mm image circle\u003c\/strong\u003e without the need for any additional flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my camera to the Pleiades 181 focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Pleiades 181 includes a comprehensive adapter system to connect most modern astronomy cameras. The package comes with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM68, M54, and M48 Camera Adapters:\u003c\/strong\u003e These three common thread sizes cover the majority of dedicated astronomy cameras and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Rotator:\u003c\/strong\u003e Allows for easy framing of your target without loosening the camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTilt Adjuster:\u003c\/strong\u003e Enables fine-tuning of the sensor plane to achieve perfect corner-to-corner focus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the Pleiades 181's 55mm image circle for a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA full-frame sensor has a diagonal of approximately 43mm. The Pleiades 181's oversized \u003cstrong\u003e55mm image circle\u003c\/strong\u003e ensures that the entire sensor is not just illuminated, but fully corrected. This provides excellent star shapes and even brightness from the center to the extreme corners of a full-frame image, preventing vignetting and optical distortions that can appear at the edge of a smaller image circle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Pleiades 181 be used for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Pleiades 181 is optically optimized as an astrograph for imaging, it can be used visually. However, its integrated correcting lenses and focuser design may make it difficult to reach focus with some standard eyepieces and diagonals. Its primary strength and intended application is deep-sky astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Pleiades 181's f\/5.5 focal ratio impact imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/5.5 focal ratio\u003c\/strong\u003e allows you to collect a significant amount of light in a shorter period compared to slower f\/8 or f\/10 systems. When imaging a large target like the Andromeda Galaxy (M31), this means you can capture the faint outer spiral arms and dust lanes with shorter individual sub-exposures, improving your signal-to-noise ratio and reducing the demands on your mount's tracking.\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\u003eLens Type\u003c\/td\u003e\n\u003ctd\u003e7-Element Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Elements\u003c\/td\u003e\n\u003ctd\u003e3x Super ED Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e181 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e998 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e4.1” Rack \u0026amp; Pinion Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e43 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEAF Compatible\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlattener Required\u003c\/td\u003e\n\u003ctd\u003eNo, integrated design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Camera Formats\u003c\/td\u003e\n\u003ctd\u003eMedium Format, Full Frame, APS-C, M4\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Mount Support\u003c\/td\u003e\n\u003ctd\u003eCanon EF, RF; Nikon F, Z; Sony E; Pentax K; MFT (M4\/3); FUJI X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003eLosmandy Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length (Retracted\/Extended)\u003c\/td\u003e\n\u003ctd\u003e1231 mm \/ 1496 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e15 kg \/ 33.07 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight (w\/ rings \u0026amp; dovetail)\u003c\/td\u003e\n\u003ctd\u003e18.7 kg \/ 41.23 lbs\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\"\u003ePleiades 181 Optical Tube Assembly\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\"\u003eTilt Adjuster\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\"\u003eCamera Angle Rotator\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\"\u003eM68 Camera Adapter\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\"\u003eM54 Camera Adapter\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\"\u003eM48 Camera 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":48603569291549,"sku":"WO-T-P-181RD","price":27597.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/FLT-180-pers-2.webp?v=1717695854"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/william-optics-pleiades-astrographs.oembed","provider":"David Astro","version":"1.0","type":"link"}