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QHY Q-Focuser - High Precision Version

QHY Q-Focuser - High Precision Version

by QHYCCD
SKU QHY-110137
$229.00 USD - $229.00 USD
$229.00 USD
$229.00 USD - $229.00 USD
$229.00 USD
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  • High-precision electronic focuser for automated imaging
  • Compact and elegant body design
  • Modern USB 2.0 Type-C data connection
  • Flexible 5V or 12V power input
  • Supports external temperature sensor for focus compensation
  • ASCOM and Linux compatible
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • QHY Q-Focuser - High Precision Version

    The QHY Q-Focuser - High Precision Version achieves automated, repeatable focus control for astrophotography, connecting to your PC or controller via a modern USB 2.0 Type-C interface. It accommodates nearly any power setup with support for both 5V and 12V inputs, ensuring compatibility with both USB-powered field rigs and permanent 12V observatory systems.

    Compact Design for High-Precision Automated Focusing

    The Q-Focuser is engineered for the modern, compact imaging rig. Its exceptionally small form factor and curved, elegant body design minimize weight and clearance issues on complex optical trains. This focuser provides the precise, repeatable micromovements necessary to achieve and maintain critical focus through temperature changes and filter swaps, eliminating a major source of frustration in astrophotography. The High Precision version installs on the fine-focus axis of your focuser and uses a non-reducing motor, so you can still focus by hand after installation and the motor adds almost zero backlash.

    Integrated control through Windows (ASCOM) and Linux platforms allows the Q-Focuser to be managed by popular automation software. You can build accurate V-curves and run autofocus routines automatically, ensuring your stars remain perfectly sharp throughout the entire imaging session.

    Modern I/O: USB 2.0 Type-C Port and 5V/12V Power

    QHY designed the Q-Focuser with robust, modern connections. The USB 2.0 Type-C port offers a more reliable and secure physical connection than older USB types and is non-directional, making it easier to plug in correctly in the dark. This single cable handles all data communication with your control computer.

    Power flexibility is a key feature, with support for both 5V and 12V inputs. You can power the device directly from a USB port for a simple, low-cable setup, or use a standard 12V DC source from an observatory-grade power distribution unit. The Q-Focuser also supports an external temperature sensor, enabling your software to automatically compensate for thermal focus shift as ambient temperature drops.

    QHY Q-Focuser vs. ZWO EAF: A Comparison

    The QHY Q-Focuser enters a market with the popular ZWO EAF as a primary competitor. The choice between them depends on your priorities for connectivity and existing hardware.

    • Q-Focuser Advantage (Connectivity): Both focusers now use a USB Type-C port, but the Q-Focuser also accepts 12V DC, while the ZWO EAF takes 5V USB Type-C power only.
    • Trade-Off (Accessories): The High Precision version comes with 2.5/3/4/5mm couplers and adjustable mounting plates; check the diameter of your focuser bearing before purchase, and note that the default adapters do not yet support Celestron Schmidt scopes.

  • How do I power the QHY Q-Focuser?

    The QHY Q-Focuser offers two power options. You can power it with 5V via its USB-C port for simple, portable setups, or use a separate 12V DC power source, common in permanent or semi-permanent observatory setups.

    What software is compatible with the QHY Q-Focuser?

    The Q-Focuser is compatible with any software that supports the ASCOM standard on Windows. This includes popular astrophotography suites like N.I.N.A., Sequence Generator Pro (SGP), and Maxim DL. It also supports Linux.

    Does the QHY Q-Focuser support temperature compensation?

    Yes. The QHY Q-Focuser has a port that supports an external temperature sensor (included). When connected, your automation software can use this data to automatically adjust focus as the ambient temperature changes, preventing focus drift during long imaging sessions.

    What is the main advantage of the QHY Q-Focuser over the ZWO EAF?

    The main difference is power. Both use a USB Type-C port, but the QHY Q-Focuser also accepts 12V DC, while the ZWO EAF takes 5V USB Type-C power only. The High Precision version also uses a non-reducing motor, so you can still focus by hand after installation.

    Will the QHY Q-Focuser work with my remote observatory running on Linux?

    The Q-Focuser supports Linux as well as Windows (ASCOM). Check that your Linux control software includes a driver for it before building a remote setup around it.

    I use N.I.N.A. on a Windows laptop to image targets like the Andromeda Galaxy (M31). Is the QHY Q-Focuser a good choice?

    Absolutely. The QHY Q-Focuser works seamlessly with N.I.N.A. through its ASCOM driver. You can use N.I.N.A.'s powerful autofocus routines to create V-curves and maintain perfect focus on your targets automatically throughout the night.

  • Supported Operating Systems Windows (ASCOM), Linux
    Temperature Compensation Supported (requires external sensor)
    Data Port USB 2.0 Type-C
    Power Input 5V / 12V
    Type Electronic motor (non-reducing, manual focus possible)
    Load capacity 7.5 kg
    Fits (scopes / focusers) Fine-focus axis of the focuser, bearing 2.5 to 5 mm; not Celestron SCT/RASA with default adapters
    Step resolution 13.5′
    Temperature sensor External sensor (included)
    Weight 265 g
  • QHYCCD Warranty