{"product_id":"william-optics-zenithstar-61-f-5-9-doublet-apo-telescope-ota-space-grey-tg-color-a-z61iitg","title":"William Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA - Space Grey (TG) Color - A-Z61IITG","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics ZenithStar 61 f\/5.9 Doublet APO Telescope OTA - Space Grey (TG) Color\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWilliam Optics (Space Grey) ZenithStar 61 f\/5.9 Doublet APO OTA\u003c\/li\u003e\n\u003cli\u003eInnovative Design, 61 mm Aperture, 360 mm Focal Length\u003c\/li\u003e\n\u003cli\u003eCompact and portable, fast f\/ratio Telescope\u003c\/li\u003e\n\u003cli\u003ef\/5.9 Focal Ratio with a lightweight 2.2 kg OTA Tube\u003c\/li\u003e\n\u003cli\u003eIdeal for both visual observing and astro-imaging work\u003c\/li\u003e\n\u003cli\u003eProvides a Full Frame image circle for imaging\u003c\/li\u003e\n\u003cli\u003eIncludes a Soft Carry Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics Space Grey ZenithStar 61 f\/5.9 Doublet APO Telescope OTA designed for use as a short-tube, fast f\/ratio, APO imaging telescope Optical Tube Assembly, which can be used for either visual observing or astro-imaging work depending upon your needs. It is a very lightweight and portable telescope OTA which is great for travel by any methods including flying. This is a great telescope OTA to use with either full-frame or APS-C type detector imagers, including the Canon EF, Nikon F, Sony E, Pentax, Micro 4\/3 types, or Fuji FX cameras.\u003c\/p\u003e\n\u003cp\u003eThis William Optics Space Grey ZenithStar 61 f\/5.9 Doublet APO OTA weighs in at only 2.2 kg (or only 4.85 pounds), and the OTA is only 245 mm (9.65 inches) long when the dew shield has been retracted. It has a fast f\/5.9 optical system based upon a doublet objective which uses FPL-53 glass to provide APO color correction and high resolution performance in a short focal length system OTA.\u003c\/p\u003e\n\u003cp\u003eThis model of the ZenithStar 61 mm f\/5.9 Doublet APO OTA from William Optics is provided in Space Grey (TG) color finish. It includes a smooth and stable-operating 2\" Rack \u0026amp; Pinion Focuser with a Two-speed 10:1 Fine Focusing control. It also includes the WO Cat Handle Bar with a Vixen style Saddle, the WO Bahtinov Mask Dust Cover, and a newly designed, stronger Clamshell ring with a built-in Dovetail plate, and a Soft Carry Case. This ZenithStar 61 mm f\/5.9 Doublet APO OTA is ready to mount on your own tripod or astro-mount, and use with your existing eyepieces and star diagonal, or your camera equipment if you will do astro-imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e This product is an OTA only, and does NOT include any Finder, eyepiece, diagonal, guide scope, or field flattener. William Optics recommends their Flat61A or their Flat61R Field Flattener optics for use with this telescope, for those doing astro-imaging.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eA-Z61IITG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eZenithStar 61 f\/5.9 Doublet APO OTA (Telescope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture:\u003c\/td\u003e\n\u003ctd\u003e61 mm (2.40\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e360 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio:\u003c\/td\u003e\n\u003ctd\u003ef\/5.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Format Covered:\u003c\/td\u003e\n\u003ctd\u003eAPS-C and Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle:\u003c\/td\u003e\n\u003ctd\u003eFull Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser:\u003c\/td\u003e\n\u003ctd\u003e2\" Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Tube Length:\u003c\/td\u003e\n\u003ctd\u003e315 mm Extended; 245 mm Retracted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor:\u003c\/td\u003e\n\u003ctd\u003eSpace Grey (TG)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight:\u003c\/td\u003e\n\u003ctd\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterchangeable T-Mount:\u003c\/td\u003e\n\u003ctd\u003eCanon EF, Nikon F, Sony E, Pentax, Micro 4\/3, Fuji FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39548621095025,"sku":"WIL-A-Z61IITG","price":621.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Z61II1_7298714f-99fa-4d41-bd97-def542833298.jpg?v=1776459299","url":"https:\/\/khanscope.com\/en-fr\/products\/william-optics-zenithstar-61-f-5-9-doublet-apo-telescope-ota-space-grey-tg-color-a-z61iitg","provider":"Khan Scope Centre","version":"1.0","type":"link"}