{"product_id":"np-127is-apo-imaging-system-refractor-telescope-npi-5054","title":"Tele Vue NP-127is APO - Imaging System Refractor Telescope - NPI-5054","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the TeleVue NP-127is APO - Imaging System Refractor Telescope...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFor 25 years, \u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e has pushed the boundaries of APO refractors, as well as \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=9\"\u003eTeleVue Telescope Eyepieces\u003c\/a\u003e, to the recognized pinnacle of performance. We were gratified but not surprised that \u003ci\u003eBackyard Astronomer'''s Guide\u003c\/i\u003e said of the NP101: \"Optics don'''t get any better than this.\" No wonder \u003ci\u003eSky and Telescope\u003c\/i\u003e rated the NP tops and selected it as the test instrument for its landmark review of the SBIG STL-11000 CCD camera. The \"is\" versions of the Televue-60, 102i, NP101 and \u003cb\u003eTelevue NP127is APO\u003c\/b\u003e retain the exemplary wide field and planetary visual capability while adding new \u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e features to make imaging easier and more flexible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eJust what makes the \u003cb\u003eTeleVue NP-127is APO - Imaging System Refractor Telescope\u003c\/b\u003e so special? The standard by which it is built. The four-element air-spaced Nagler-Petzval \u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e system begins with a precision machined 660mm focal length optical tube that'''s fully internally blackened to prevent any stray light inflections. Then it'''s combined with a 127mm aperture extra low dispersion glass doublet as the primary lens with a with a secondary field-flattening\/aberration-correcting extra low dispersion glass doublet at the opposite end. All \u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e optical surfaces receive index matched multi-coatings. This design offers up diffraction-limited apochromatic peformance - simultaneously correcting for field curvature, astigmatism, spherical aberration, coma, secondary spectrum and spherochromatism. Combine with a \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=13\"\u003eTeleVue Mount\u003c\/a\u003e for excellence in \u003ca href=\"http:\/\/khanscope.com\/newEquipCart.cfm?catID=1\u0026amp;subcatID=18\"\u003eastrophotography\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e was determined to make the \u003cb\u003eTeleVue NP-127is APO - Imaging System Refractor Telescope\u003c\/b\u003e series optically, mechanically, and functionally as perfect as possible for imaging up to 50mm diagonal chips without penalty to its near ideal visual operation. How? By applying the developments created for the Televue-60is to the new NP101is and NP127is and then going beyond. The NP101 (f\/5.4, 4\") and NP127 (660mm, f\/5.2, 5\") maintain their optical specifications yet with redesigned 4-element \u003ca href=\"http:\/\/www.khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\"\u003eTeleVue Telescope\u003c\/a\u003e optical systems. Larger rear lens groups absolutely minimize vignetting in formats up to 52mm diagonal. For these large chips an optional field corrector was developed so the corners of the newly brightened edges would virtually be as perfect as the center of the field.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDon'''t forget, we carry plenty of \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=9\"\u003eTeleVue Accessories\u003c\/a\u003e, too! Look for \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=9\"\u003eTeleVue Telescope Eyepieces\u003c\/a\u003e and \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=10\"\u003eTeleVue Telescope Filters\u003c\/a\u003e for visual observers - as well as \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=12\"\u003eTeleVue Finderscopes\u003c\/a\u003e and \u003ca href=\"http:\/\/khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=9\"\u003eTeleVue Dioptrx\u003c\/a\u003e!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eTeleVue NP-127is APO - Imaging System Refractor Telescope Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNew lens prescription delivers smaller spot sizes over a broader wavelength range\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBoth the optical and mechanical designs have been revised to further reduce atmospheric defocusing ability\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eHandsome new shapes of the dew shield and rear cell bring a refined elegance to this high performance APO refractor\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFast f\/5.2, flat-field optics and the ability to image across a 52mm diagonal sensor\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFocuser tested to hold and drive a minimum of 6 lbs of weight in vertical orientation\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFully internally blackened to prevent any stray light inflection\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eOffers up diffraction-limited apochromatic peformance - simultaneously correcting for field curvature, astigmatism, spherical aberration, coma, secondary spectrum and spherochromatism\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNew 10:1 focuser pinion assembly, made for Tele Vue by Starlight Instruments\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePackage Includes: Enlarged focuser with 3\" entrance aperture and 2.4\" exit aperture, Focuser body has brass clamp ring with 2-lock knobs, Accessory end-ring with tilt capability and 4-lock knobs, Imaging insert threaded for Imaging System components, 2\" accessory insert for visual or other 2\" accessories, Focusmate dual-speed focuser 10:1, Sliding metal dew shield, Screw-on metal lens cover and Hard-shell carry case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eTeleVue NP-127is APO - Imaging System Refractor Telescope Specificatons...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eType: APO (Nagler-Petzval) Refractor\u003c\/p\u003e\n\u003cp\u003eElements\/Groups: 4\/2\u003c\/p\u003e\n\u003cp\u003eObjective (mm): 127\u003c\/p\u003e\n\u003cp\u003eFocal Length (mm): 660\u003c\/p\u003e\n\u003cp\u003eFocal Ratio (f\/#): 5.2\u003c\/p\u003e\n\u003cp\u003eDrawtube\/Focuser: 2.4-inch, Focusmate dual-speed rack\/pinion\u003c\/p\u003e\n\u003cp\u003eLength OTA (inch): 33.5\u003c\/p\u003e\n\u003cp\u003eLength with diagonal (inch): 36.5 (with 2-inch diagonal)\u003c\/p\u003e\n\u003cp\u003eWeight OTA\/Std. Config (lbs): 15.4 \/ 18.3\u003c\/p\u003e\n\u003cp\u003eMaximum Visual Field (deg.): 4 (with 2-inch 55mm Plossl)\u003c\/p\u003e\n\u003cp\u003eMaximum Recommended Power (x): 300\u003c\/p\u003e\n\u003cp\u003eTeleVue Product Number: NPI-5054\u003c\/p\u003e","brand":"TeleVue","offers":[{"title":"Default","offer_id":10554799361,"sku":"TEL-NPI-5054","price":6623.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/1026-1-thumb.jpeg?v=1776459178","url":"https:\/\/khanscope.com\/en-fr\/products\/np-127is-apo-imaging-system-refractor-telescope-npi-5054","provider":"Khan Scope Centre","version":"1.0","type":"link"}