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QHYCCD Q-Focuser Electronic Focuser - Standard Version

QHYCCD Q-Focuser Electronic Focuser - Standard Version

by QHYCCD
SKU QHY-110136
$199.00 USD - $199.00 USD
$199.00 USD
$199.00 USD - $199.00 USD
$199.00 USD
Price Match Policy!
  • Installs on the coarse focus shaft
  • 10kg maximum load capacity
  • 28.125 arcsecond step size
  • Powered by 5V USB-C or 12V DC
  • Includes external temperature sensor
  • ASCOM and Linux compatible
3 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • QHYCCD Q-Focuser Electronic Focuser - Standard Version

    The QHYCCD Q-Focuser Standard Version automates focusing with a geared motor rated for loads of about 10kg. This compact unit weighs only about 210g and offers a step size of 28.125 arcseconds for precise adjustments. It draws power directly from a 5V USB Type-C connection or an external 12V DC source, integrating seamlessly with Windows (ASCOM 6.5+) and Linux systems.

    Geared Motor: 10kg Load Capacity and 28.125" Step Size

    The Q-Focuser Standard Version uses a reducing (geared) motor, rated for a maximum load of about 10kg. The 28.125 arcsecond step size provides fine control for achieving sharp focus across your field.

    Like all geared focusers, this design introduces some mechanical backlash. QHYCCD notes that it can be calibrated in software such as N.I.N.A.

    Flexible Mounting with 4 Included Shaft Couplers

    Designed for broad compatibility, the Q-Focuser mounts to the coarse focus shaft of your telescope, the most common installation method for electronic focusers. The kit includes a versatile set of mounting plates with adjustable hole positions, allowing you to adapt the focuser's height and orientation to fit your specific telescope.

    Four shaft couplers are included to connect the focuser's 5mm motor shaft to focus shafts of 4mm, 5mm, 6mm, and 7mm. Please note that the included adapters are not compatible with the focusing mechanisms on Celestron Schmidt-Cassegrain scopes like the C8, C11, and RASA 14.

    Dual 5V/12V Power and External Temperature Sensor

    The Q-Focuser offers two ways to power the unit, ensuring flexibility in the field. For most setups, the 5V power supplied over the USB 2.0 Type-C data cable is sufficient, minimizing cable clutter. A 12V DC input is also available, with the 12V power adapter cable included.

    An external temperature sensor is included in the box. The ASCOM driver displays the temperature, so your imaging software can track it during the night, for example to start a new autofocus run when the temperature changes.

    ASCOM and Linux Control for Automated Focusing

    Full integration with your imaging software is handled via the ASCOM platform on Windows (version 6.5 or later) and dedicated drivers for Linux systems. The QHYCCD ASCOM driver provides control over all essential functions, including focuser movement, setting the current position, defining travel limits, and maintaining motor torque to hold position.

    This widespread compatibility ensures the Q-Focuser works out of the box with popular acquisition software like N.I.N.A., MaxIm DL, and any other program that supports the ASCOM focuser standard. This lets you add autofocus runs to your imaging sequences.

    Q-Focuser Standard vs. High Precision: Choosing the Right Model

    QHYCCD offers two versions of the Q-Focuser, each designed for a different application. The choice depends on your telescope's focuser and your specific imaging needs.

    • Standard Version (This Product): Mounts on the coarse focus shaft. Its geared motor provides a high 10kg load capacity, with some backlash that is calibrated in software.
    • High Precision Version: Mounts on the fine-focus shaft. It uses a non-reducing motor that produces almost zero backlash and allows for manual focusing even when installed. Its maximum load is about 7.5kg.

  • Can I power the QHYCCD Q-Focuser Standard with just a USB cable?

    Yes. The Q-Focuser can be powered entirely by a 5V USB Type-C connection from your computer or USB hub. A 12V DC input is also available; QHYCCD says USB 5V power is enough in most cases.

    How do I handle the backlash with the Q-Focuser Standard Version?

    The backlash from the geared motor is a normal characteristic and is compensated for in software. Autofocus routines in programs like N.I.N.A. and others that use the ASCOM platform have backlash compensation settings.

    Can I still focus my telescope by hand after installing the Q-Focuser Standard?

    No. Once the Standard Version is installed on the coarse focus shaft, manual focusing is not supported. All focus adjustments must be made electronically through your connected computer software.

    Will the Q-Focuser handle my heavy camera and filter wheel on a large refractor?

    QHYCCD rates the Standard Version for a maximum load of about 10kg. Add up the weight of your camera, filter wheel and other accessories and keep the total under that figure.

    How does the Q-Focuser's temperature sensor help when imaging the Andromeda Galaxy (M31) all night?

    As ambient temperature drops during a long imaging session, your telescope's metal tube and glass optics contract, causing the focal point to shift. The included external temperature sensor lets your software follow the temperature, so you can set your imaging software to re-run autofocus when it changes by a set amount and keep M31 sharp through the night.

    What focusers are compatible with the included couplers for the Q-Focuser?

    The Q-Focuser Standard Version includes four couplers that adapt its 5mm motor shaft to telescope focuser shafts measuring 4mm, 5mm, 6mm, and 7mm in diameter. This covers many common focusers found on refractors and Newtonian reflectors. Always measure your focuser's shaft diameter before purchase to ensure compatibility.

  • Version Standard (installs on the coarse focus shaft)
    Motor Reducing (geared) motor
    Maximum Load About 10kg
    Step Size 28.125 arcseconds
    Backlash Some backlash, which can be calibrated in software such as N.I.N.A.
    Manual Focus Support Not supported
    Data Interface USB 2.0 Type-C
    Power Supply 5V (USB Type-C) or 12V DC
    External Temperature Sensor Supported (included)
    Supported Systems Windows (ASCOM 6.5 or later) and Linux
    Included Couplers 5mm to 4, 5, 6 and 7mm
    Body Size About 43 x 39 x 50mm
    Weight About 210g
    Known Incompatibilities Celestron Schmidt-Cassegrain scopes (C8, C11, RASA 14) with the default adapters

    • Q-Focuser Standard Version

      × 1

    • External temperature sensor

      × 1

    • USB Type-C cable

      × 1

    • 12V power adapter cable

      × 1

    • Couplers (5mm to 4, 5, 6 and 7mm)

      × 4

    • Mounting plates

      × 1

    • Screws

      × 1

    • Driver download instructions card

      × 1

  • QHYCCD 2-Year Warranty