{"product_id":"vixen-ap-sd81s-ii-telescope-with-ap-mount-tripod-kit","title":"Vixen AP-SD81S II Telescope with AP Mount \u0026 Tripod Kit","description":"\u003ch2\u003e\u003cstrong\u003e**Special Price on the BINTEL Display Model! One only available**\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch2\u003eHighlights:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for visual observation and astrophotography.\u003c\/li\u003e\n\u003cli\u003eDesigned for the amateur astronomer or photographer who wants to view and photograph the moon, planets, and deep sky objects.\u003c\/li\u003e\n\u003cli\u003eFeatures FPL53 \"super\" extra-low dispersion (ED) glass in a fully multicoated apochromatic lens system that corrects for both spherical and chromatic aberrations, astigmatism, and off-axis comas.\u003c\/li\u003e\n\u003cli\u003eThis correction creates a wide flat field of view without distortion and removes the blue-tinted halo effect for true high-contrast color transmission.\u003c\/li\u003e\n\u003cli\u003eCan accept both 2\" and 1.25\" eyepieces and accessories for visual use.\u003c\/li\u003e\n\u003cli\u003eThreads on the drawtube allow direct connection of T-rings and other camera mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eA ring spacer placed around the objective lens refines star images beautifully in astrophotography.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIn the previous SD81S model, a set of three tiny tin foils are placed around the objective lens as a spacer between the doublet lens. The end of the tin foils protruding over the objective lens obstruct the incoming light. As a result, the protruding tin foils make the light of diffraction of stars chipped radially. Exchanging the tin foils for the spacer ring makes the diffraction of the stars' light equal. It allows you to create more refined and beautiful star images in your astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_1.webp?v=1780012169\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eThe SD lens suppresses residual chromatic aberration far below the threshold of visibility.\u003c\/h2\u003e\n\u003cp\u003eA lens of refracting telescopes has chromatic aberration which is caused by different wavelength of visible light (colors) focusing at different distances. The Vixen SD lenses, made of FPL53 super extra-low dispersion glass, allow for correcting the chromatic aberration over a wide spectrum of light. The SD81SII delivers outstandingly sharp images with high contrast for both visual and photographic applications. Moderately bright F7.7 images will satisfy the most demanding visual astronomer or astrophotographer.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_2.webp?v=1780012243\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eA short optical tube in length is handy for not only visual observation but also astrophotography.\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe ED81SII optical tube has a moderate short length to enable you to carry and set it up readily. Also, a lightweight optical tube allows you to balance it with fewer counterweights. The ED81S comes equipped with a metal carry handle and the Vixen standard dovetail slide bar M for quick attaching and detaching. The provided Flip mirror diagonal switches incoming light to allow for using two eyepieces of different magnifications alternately. Also, you can install a camera on the straight side and view an image through an eyepiece on the right-angled side of the flip mirror diagonal.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_3.webp?v=1780012321\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eFull-frame imaging with a DSLR camera.\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003eUsing an SD reducer HD kit or an SD Flattener SD kit, which are available optionally, the SD80SII provides an image circle of 44mm, adequate for taking photos with a DSLR camera. (Photo) M8, M20 nebulae taken with Vixen SD81SII with SD reducer HD kit (compound focus 496mm) and Pentax K-1 at ISO1600, 49 minutes exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_4.webp?v=1780012390\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eOptional accessories to expand your pleasure of taking astrophotography.\u003c\/h2\u003e\n\u003cp\u003eSD Reducer HD Kit: This kit includes a flattener lens to be combined with a reducer lens for a flat and wide imaging field when you use them with the SD81SII, SD103SII, or SD115SII optical tube. The reducer lens reduces a focal length by 0.7X. Direct Wide Photo Adapter 60DX: It is available for Canon EOS or Nikon DSLR cameras. It is possible to change the orientation of a camera for a framing of the photographic field.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_6.webp?v=1780012553\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWide Photo Adapter 60DX\u003c\/h2\u003e\n\u003cp\u003eHigh precision camera adapters for prime focus astrophotography are optionally available for Canon EOS and Nikon. The Wide Photo Adapter 60DX is designed to be an integrated camera mount reducing vignetting to the maximum. They are highly effective with full-frame DSLR cameras, and can be used with SD series refractors (in combination with the SD Reducer HD Kit or SD Flattener HD Kit).\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/vixen_sd81s_5.webp?v=1780012463\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #333333; color: #ffffff; text-align: left; padding: 6px 10px; font-weight: 500;\" colspan=\"2\"\u003eOptical Tube\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; width: 38%; background: #ffffff;\"\u003eObjective Lens \/ Effective Aperture\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003e81mm SD Apochromat Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eFocal Length (Focal Ratio)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003e625mm (F7.7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eResolution \/ Limiting Magnitude\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003e1.43 arc sec., 11.3 mag., 134× unaided eye\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eDimensions \/ Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003eLength 585mm, outer diameter 90mm, 3.6kg (main body 2.3kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eFinder Scope\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003eXY Red Dot Finder II (one-power aiming device)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #555555; color: #ffffff; text-align: left; padding: 6px 10px; font-weight: 500;\" colspan=\"2\"\u003eEyepiece \/ Focuser\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eFocusing System\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003eRack and Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eThreads \/ Visual Back\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003eScrew-in: 60mm, 42mm T-ring\u003cbr\u003ePush-fit: 50.8mm, 31.7mm (with Flip Mirror Diagonal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eEyepiece — SLV20mm\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003e31×, 97′ actual field of view\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eEyepiece — SLV5mm\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003e125×, 24′ actual field of view\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #555555; color: #ffffff; text-align: left; padding: 6px 10px; font-weight: 500;\" colspan=\"2\"\u003eTripod\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eMaterial \/ Form\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003eLarge hexagonal aluminium two-stage extension legs (one-touch type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eLeg Length \/ Height\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003e570–1,296mm leg length; 526–1,159mm height (from ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eOverall Length \/ Setting Radius \/ Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003e598.4mm overall; setting radius 350–710mm; 3.0kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #555555; color: #ffffff; text-align: left; padding: 6px 10px; font-weight: 500;\" colspan=\"2\"\u003eGeneral\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eMain Accessories\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003eParts case, counterweight 1kg ×1, 1.9kg ×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eSolar Observation\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003eCompatible with Sun Projection Screen Set B (sold separately) — short-term observation only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #ffffff;\"\u003eTotal Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #ffffff;\"\u003e13.1kg (excluding eyepiece)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #555555; color: #ffffff; text-align: left; padding: 6px 10px; font-weight: 500;\" colspan=\"2\"\u003eSet Contents\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; font-weight: 500; background: #f2f2f2;\"\u003eIncluded Items\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 10px; border: 1px solid #ccc; background: #f2f2f2;\"\u003eSD81SII OTA, AP Mount, APP-TL130 Tripod, Eyepiece SLV20mm, Eyepiece SLV5mm, Parts Case, Counterweight 1kg ×1, Counterweight 1.9kg ×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"The Binocular and Telescope Shop","offers":[{"title":"Default Title","offer_id":45069190037573,"sku":"VX26173","price":1999.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/26173_4-C001.jpg?v=1780013647","url":"https:\/\/bintel.com.au\/products\/vixen-ap-sd81s-ii-telescope-with-ap-mount-tripod-kit","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}