The Gran Turismo 81 is a Three Element Designed APO refracting telescope Optical Tube Assembly (OTA)<\/strong>. Using FPL-53 glass this telescope provides excellent aberration correction. The smaller version of this refractor telescope can be found on this link here<\/a>.<\/p>\n The William Optics Gran Turismo 81mm refracting telescope features a CNC machined optical tube with an immaculate white finish and Trim color of your choice. Internally, this refractor contains a 3-element objective using high-quality FPL-53 extra-low dispersion glass to reduce any secondary spectrum to an incredible extent. The three element apochromatic design and FPL-53 glass provide superior optical performance and excellent aberration correction. This 81mm OTA from William Optics comes with a 2.5″ Rack & Pinion Focuser, a camera angle rotator, CNC Handle Bar, Bahtinov Mask, Mounting Rings, and Dovetail. Mount this OTA package to a mount and tripod, and you are all set for a fantastic visual observation or imaging session.<\/p>\n William Optics has included a 2.5″ Rack & Pinion focuser to for smooth and stable focusing. The design ensures astrophotographers do not need to worry about image shifting. This focuser comes with 1:10 dual-speed and super smooth 360\u00ba rotation. William Optics has included two locking screws on angled positions for operations with heavy-duty payloads and a large aluminum knob with built-in thermometer. Attached to the 2.5″ R&P focuser is a WO camera angle rotator to help you get that perfect focus for beautiful celestial images. As an added bonus for focusing, William Optics has added the innovative Bahtinov mask cover.<\/p>\n With the William Optics CNC Handle Bar, this already portable refracting telescope<\/a> has a sturdy handle to help carry the OTA around to your favorite gazing spot. Not only is this handle bar functional as a handle, it also acts a slide base for compatible guiding accessories as an astrograph telescope<\/a>. This handle bar perfectly fits William Optics slide base 50mm guide rings and the WO UniGuide 50mm Guide Scope (both are not included).<\/p>\n 2.5″ R&P Focuser<\/strong><\/p>\n The 2.5″ R&P Focuser is smooth, stable, and reliable. No image shifting.<\/p>\n <\/p>\n New Designed Rotator<\/strong><\/p>\n William Optics designed camera angle rotator. Smooth and stable.<\/p>\n <\/p>\n CNC Handle Bar<\/strong><\/p>\n Made by CNC with anodizing.<\/p>\n <\/p>\n Bahtinov Mask<\/strong><\/p>\n Built-in clear Bahtinov mask<\/p>\n <\/p>\n Attention to Details<\/b><\/p>\n Standard Package\uff1a<\/b><\/p>\n The Gran Turismo 81 is a Three Element Designed APO refractor. Using FPL-53 glass this telescope provides excellent aberration correction.<\/p>\n <\/p>\n","protected":false},"featured_media":5608,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_cat":[654,27,425,532],"product_tag":[],"class_list":{"0":"post-5451","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ota-only","7":"product_cat-telescopes","8":"product_cat-astrograph","9":"product_cat-refractors","10":"desktop-align-center","11":"tablet-align-left","12":"mobile-align-left","13":"ast-product-gallery-layout-horizontal-slider","14":"ast-product-gallery-with-no-image","15":"ast-product-tabs-layout-vertical","16":"ast-qv-on-image","18":"first","19":"onbackorder","20":"taxable","21":"shipping-taxable","22":"purchasable","23":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/product\/5451"}],"collection":[{"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/comments?post=5451"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/media\/5608"}],"wp:attachment":[{"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/media?parent=5451"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/product_cat?post=5451"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/astronomicalsolutions.com\/staging\/wp-json\/wp\/v2\/product_tag?post=5451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Details and Features<\/strong><\/h3>\n
Highlights<\/strong><\/h3>\n
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