{"product_id":"tec-atmospheric-dispersion-corrector-tecadc","title":"TEC Atmospheric Dispersion Corrector (TECADC)","description":"\u003ch2\u003eTEC Atmospheric Dispersion Corrector\u003c\/h2\u003e\n\u003cp\u003eThe goal of the atmospheric dispersive corrector (ADC) is to compensate the dispersive impact of the earth atmosphere on the optical path of the light. The ADC should be especially used to compensate the loss of the contrast caused by the atmospheric dispersion.\u003cbr\u003eAll components have been designed to keep the full optical performance of the telescope.\u003cbr\u003eSince the correction power of the ADC grows with his distance to the focus, distance tubes (about 40 - 100mm) should be inserted between ADC and the 1.25“ eyepiece holder when observing objects with zenith distances greater than 60°. For telescopes with F-numbers smaller then F10 a barlow lens should be used to reduce the beam divergence for minimizing the transversal color error.\u003cbr\u003eIn general, atmospheric dispersive correctors have two optical elements with dispersive power. Simple correctors have two single prisms which have to be turned contrary to find the optimal correction. These simple prisms introduce an asymmetry into the optical system which is responsible for a dramatic reduction of the image quality. This setup leads to a non-diffraction limited optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eConsequently, we have designed our ADC to keep the diffraction limited performance by using plane plates as dispersive elements. These plan plates consists of two complementary prisms of different glasses. The glasses are selected to have the identical refraction index but different dispersions. Both interfaces have identical dove tails where the added T2 male and T2 female adapters fits in. This allows by more flexibility a fast change of the equipment.\u003c\/p\u003e\n\u003cp\u003eTEC recommends this product be purchased with the \u003ca title=\"TEC ADC Adapter Set\" href=\"https:\/\/istronomyplus.com\/products\/tec-adc-adapter-set-adcset\" target=\"_blank\"\u003eADC Adapter Set\u003c\/a\u003e.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"border-block: unset; border-inline: unset; border-start-start-radius: unset; border-start-end-radius: unset; border-end-start-radius: unset; border-end-end-radius: unset; overflow-inline: unset; overflow-block: unset; overscroll-behavior-inline: unset; overscroll-behavior-block: unset; margin-block: unset; margin-inline: unset; scroll-margin-block: unset; scroll-margin-inline: unset; padding-block: unset; padding-inline: unset; scroll-padding-block: unset; scroll-padding-inline: unset; inset-block: unset; inset-inline: unset; block-size: unset; min-block-size: unset; max-block-size: unset; inline-size: unset; 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word-break: unset; text-justify: unset; text-align-last: unset; text-align: unset; letter-spacing: unset; word-spacing: unset; white-space: pre; text-shadow: unset; text-emphasis: unset; text-emphasis-position: unset; tab-size: unset; line-break: unset; -webkit-text-fill-color: unset; -webkit-text-stroke: unset; ruby-align: unset; ruby-position: unset; text-combine-upright: unset; text-rendering: unset; text-underline-offset: unset; text-underline-position: unset; text-decoration-skip-ink: unset; hyphenate-character: unset; cursor: unset; pointer-events: unset; -moz-user-input: unset; -moz-user-modify: unset; -moz-user-focus: unset; caret-color: unset; accent-color: unset; color-scheme: unset; scrollbar-color: unset; list-style: unset; quotes: unset; -moz-image-region: unset; margin: unset; overflow-clip-margin: unset; scroll-margin: unset; outline: unset; outline-offset: unset; page: unset; padding: unset; scroll-padding: unset; top: 0px; right: unset; bottom: unset; left: unset; z-index: unset; flex-flow: unset; place-content: unset; place-items: unset; flex: unset; place-self: unset; order: unset; width: unset; min-width: unset; max-width: unset; height: unset; min-height: unset; max-height: unset; box-sizing: unset; object-fit: unset; object-position: unset; grid-area: unset; grid: unset; gap: unset; aspect-ratio: unset; contain-intrinsic-size: unset; vector-effect: unset; stop-color: unset; stop-opacity: unset; flood-color: unset; flood-opacity: unset; lighting-color: unset; mask-type: unset; clip-path: unset; mask: unset; x: unset; y: unset; cx: unset; cy: unset; rx: unset; ry: unset; r: unset; d: unset; table-layout: unset; text-overflow: unset; text-decoration: unset; ime-mode: unset; scrollbar-width: unset; user-select: text; -moz-window-dragging: unset; -moz-force-broken-image-icon: unset; transition: unset; animation: unset; -moz-box-align: unset; -moz-box-direction: unset; -moz-box-flex: unset; -moz-box-orient: unset; -moz-box-pack: unset; -moz-box-ordinal-group: unset;\"\u003ehttps:\/\/istronomyplus.com\/products\/tec-adc-adapter-set-adcset?utm_source=copyToPasteBoard\u0026amp;utm_medium=product-links\u0026amp;utm_content=web\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"box-sizing: border-box; border-collapse: collapse; margin: 20px 0px; color: #666666; font-family: Lato, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; height: 344px; width: 730.235px;\" data-mce-style=\"box-sizing: border-box; border-collapse: collapse; margin: 20px 0px; color: #666666; font-family: Lato, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; height: 344px; width: 730.235px;\" border=\"1\"\u003e\n\u003ctbody style=\"box-sizing: border-box;\" data-mce-style=\"box-sizing: border-box;\"\u003e\n\u003ctr style=\"box-sizing: border-box; height: 80px;\" data-mce-style=\"box-sizing: border-box; height: 80px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 80px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 80px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eModule-Components\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 80px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 80px;\"\u003eADC Unit with dove tails on both sides D=48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 72px;\" data-mce-style=\"box-sizing: border-box; height: 72px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\"\u003eT2 Female Thread on the Telescope side\/ T2 Male Thread on the eyepiece side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 72px;\" data-mce-style=\"box-sizing: border-box; height: 72px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eDispersive Optics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 72px;\"\u003e2 plan plates built of 2 complementary glass prisms with different dispersion, but the same refraction index\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 24px;\" data-mce-style=\"box-sizing: border-box; height: 24px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eFree Optical Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 24px;\" data-mce-style=\"box-sizing: border-box; height: 24px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003ePrism Angle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e2°24‘\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 24px;\" data-mce-style=\"box-sizing: border-box; height: 24px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eOptical Accuracy (Wellenfront)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e1\/30 λ rms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 24px;\" data-mce-style=\"box-sizing: border-box; height: 24px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eMechanical\/Optical Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e47mm \/ 45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; height: 24px;\" data-mce-style=\"box-sizing: border-box; height: 24px;\"\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e\u003cstrong style=\"box-sizing: border-box; font-weight: bolder;\" data-mce-style=\"box-sizing: border-box; font-weight: bolder;\"\u003eWeight \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\" data-mce-style=\"box-sizing: border-box; padding: 10px; width: 364.647px; height: 24px;\"\u003e440g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\nTEC Atmospheric Dispersion Corrector\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTEC Lifetime Warranty\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/ADC_User_s_Manual.pdf?v=1680197597\" class=\"simplelightbox\" style=\"box-sizing: border-box; color: #0069cc; text-decoration: none; background-color: #ffffff; font-family: Lato, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; outline-width: 0px !important; user-select: auto !important;\" target=\"_blank\"\u003eADC User’s Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TEC","offers":[{"title":"Default Title","offer_id":43991436263653,"sku":"TEC-TECADC","price":6248.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/tec-atmospheric-dispersion-corrector-tecadc-astronomy-plus.webp?v=1690489480","url":"https:\/\/istronomyplus.com\/products\/tec-atmospheric-dispersion-corrector-tecadc","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}