{"product_id":"qhy-qfocuser-electronic-focuser-high-precision-version","title":"QHY Q-Focuser Electronic Focuser - High Precision Version - 110137","description":"\u003ch3 style=\"text-align: center;\"\u003eQHY Q-Focuser - High Precision Version\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eThe QHY High Precision (HP) version on the Q-Focuser installs on the precision adjustment axis side of the your focuser. While the Standard version of the QHY Q-Focuser is designed to be installed on the course adjustment axis side of the telescope.  \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QHY_Q_Focuser_Std_vs_Precision.jpg?v=1745353627\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe main difference between the HP \u0026amp; Standard version, besides which side of the focuser it is installed, is the type of motor used.  The High Precision version uses a motor without reduction gears, while the Standard uses a motor with reduction gears. Because of this difference, the two versions perform a bit differently in these areas:\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSize, weight \u0026amp; cost:  Standard is a tad smaller \u0026amp; lighter, and it costs a bit less\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eManual focus:  HP version supports it, while the Standard does not\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eBacklash:  HP version wins here with less backlash to begin with (reduction gears cause some backlash), although any backlash can be calibrated with the use of NINA software.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMax load:  The Standard \u003c\/em\u003e\u003ci\u003eversion is listed at 10kg while the HP is about 7.5kg.  \u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003eAs you can see, there are pluses and minuses to both versions of the Q-Focuser.  If you have a heavier load, then the Standard may win out, but the ability to manually focus and start with less backlash before calibration will probably make the HP version a winner for many.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePS:  The Q-Focuser does not fit Schmidt-Cassegrain or RASA telescopes.  If you'd like to use it on one of these fine telescopes, wait a bit, as we hear an adapter is being developed.  \u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cem\u003ePPS: Also, please note that the Precision Version comes with 2.5\/3\/4\/5mm couplers.  Check the diameter of your bearing before purchase to make sure there is a coupler size that will fit your equipment.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QFocuser_HP_Installed.jpg?v=1745355857\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe Q-Focuser High Precision is very small \u0026amp; lightweight!  Its curved surface design provides some extra clearance while weighing just 265g.  The Q electronic focuser dimensions are 43 mm x 39mm x 50mm, excluding the knob.  Its max load is about 7.5kg.\u003c\/p\u003e\n\u003cp\u003eMost electric focusers use a motor and reducing gears and once installed on the telescope manual focusing is not possible. However, the High Precision QFocuser is equipped with a non-reducing motor, allowing it to be manually adjusted even after installation on the telescope, without the need for a power connection or a clutch switch.\u003c\/p\u003e\n\u003cp\u003eAnother advantage of QFocuser High Precision Version is that it allows the entire system to achieve almost zero backlash. Backlash calculations involve the entire focusing system, including the focus motor mount, not just the electronic focuser itself. Backlash will exist if there are mechanical gears in the focusing system. Since the High precision QFocuser uses a non-reducing motor (i.e., no mechanical reduction gears) the added backlash from the motor is almost zero. Then, if a good focusing mount is used, the entire focusing system will operate with almost zero backlash. According to our test in NINA, with the backlash set to 0 in the Autofocus settings, the autofocus process runs smoothly.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eQFocuser features several holes on its bottom and side, providing a variety of fixing methods. Unlike mounting plates with fixed holes, QFocuser adopts a flexible structure where the fixed holes position and mounting plate height can be freely adjusted to achieve the best compatibility with your telescope.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QFocuser_Ports_with_Text.png?v=1745356167\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QHY_QFocuser_Information.pdf?v=1745358031\" target=\"_blank\" title=\"QHY Q-Focuser Information Sheet (PDF)\" rel=\"noopener\"\u003eRead more about the Q-Focuser\u003c\/a\u003e...\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QHY_Q_Focuser_WITB_Precision_Version.jpg?v=1745357680\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eVersion\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eQFocuser（Standard Version）\u003c\/td\u003e\n\u003ctd width=\"179\"\u003e\u003cstrong\u003eQFocuser（High Precision Version）\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eBody Size\/mm\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eAbout 43*39*50\u003c\/td\u003e\n\u003ctd width=\"179\"\u003eAbout 43*39*50 (excluding the button）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eWeight\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eAbout 210g\u003c\/td\u003e\n\u003ctd width=\"179\"\u003eAbout 265g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eMotor\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eReducing motor\u003c\/td\u003e\n\u003ctd width=\"179\"\u003eNon-reducing motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eBacklash\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eIt has some backlash, which can be calibrated in software like NINA\u003c\/td\u003e\n\u003ctd width=\"179\"\u003e Almost zero backlash*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eMax. Loads\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eAbout 10kg\u003c\/td\u003e\n\u003ctd width=\"179\"\u003eAbout 7.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eManually Focus After Installing\u003c\/td\u003e\n\u003ctd width=\"200\"\u003eNot supported\u003c\/td\u003e\n\u003ctd width=\"179\"\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eSystem Supported\u003c\/td\u003e\n\u003ctd colspan=\"2\" width=\"380\"\u003eWindows （ASCOM）\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLinux\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eExternal Temperature Sensor\u003c\/td\u003e\n\u003ctd colspan=\"2\" width=\"380\"\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003eData Interface\u003c\/td\u003e\n\u003ctd colspan=\"2\" width=\"380\"\u003eUSB2.0 Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"145\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd colspan=\"2\" width=\"380\"\u003e5v\/12v\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":41846945251441,"sku":"QHY-110137","price":202.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QHY_Q_Focuser_Precision_Knob_Side_41642701-03dd-4c2e-864f-377fe6eaf778.jpg?v=1776459098","url":"https:\/\/khanscope.com\/en-fr\/products\/qhy-qfocuser-electronic-focuser-high-precision-version","provider":"Khan Scope Centre","version":"1.0","type":"link"}