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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
QHYCCD ST-4 Guiding Cable for QHY5III Series

QHYCCD ST-4 Guiding Cable for QHY5III Series

by QHYCCD
SKU QHY-030002
$15.00 - $15.00
$15.00
$15.00 - $15.00
$15.00
Price Match Policy!
  • Connects QHY5III Series cameras to an ST-4 autoguider port
  • Enables direct, hardware-level guide corrections
  • Standard connector for most equatorial mounts
  • Reliable communication for precise tracking
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • ST-4 Guiding Cable for QHY5III Series

    This ST-4 Guiding Cable provides the essential physical link between your QHY5III series guide camera and the autoguider port on your equatorial mount. It enables your imaging software to send direct, hardware-based correction signals to the mount's motors for precise, sub-pixel tracking during long-exposure astrophotography.

    Direct Mount Correction for the QHY5III Series

    The ST-4 standard is a direct, reliable method for autoguiding. This cable transmits simple on/off signals for each of the four cardinal directions (RA+, RA-, Dec+, Dec-), bypassing the complexities of software-based pulse guiding through a computer's serial or USB port. This results in a robust, low-latency connection that is essential for maintaining sharp, pinpoint stars over many minutes of exposure.

    ST-4 vs. Pulse Guiding: When to Use This Cable

    While many modern setups use ASCOM pulse guiding over a single USB cable, an ST-4 connection remains a critical tool. It's an indispensable backup if your primary connection fails and is the primary method for guiding with non-ASCOM mounts or setups where minimizing cable runs to the computer is a priority. For imagers seeking the most direct and physically isolated guiding system, the ST-4 cable for your QHY5III camera is the standard.

  • What is the purpose of the ST-4 Guiding Cable for QHY5III Series?

    This cable connects your QHY5III series camera to the ST-4 autoguider port on your telescope mount. This allows guiding software, like PHD2, to send correction signals directly to the mount's motors to ensure accurate tracking on a guide star.

    Which QHYCCD cameras are compatible with this ST-4 cable?

    This cable is specifically designed for the QHY5III series of planetary and guide cameras. It connects to the ST-4 compatible port present on these models.

    Do I need this ST-4 cable if my mount supports ASCOM pulse guiding?

    Not necessarily, but it is highly recommended. While ASCOM pulse guiding sends corrections through the main mount connection (USB/Serial), an ST-4 cable provides a separate, dedicated hardware link. This can be more reliable in some setups and serves as an essential backup if you experience issues with your primary ASCOM connection.

    How do I connect this guiding cable between my QHY5III camera and my Sky-Watcher EQ6-R Pro mount?

    Connecting the cable is straightforward. One end plugs into the guide port on your QHY5III series camera, and the other end plugs into the port labeled "AUTO GUIDE" or "ST-4" on your Sky-Watcher EQ6-R Pro mount. Once connected, you can select "On-camera (ST-4)" as your mount output in your guiding software.

    Is this ST-4 Guiding Cable compatible with older QHY5-II series cameras?

    This cable is specified for the QHY5III series. While the port may be similar, you should verify compatibility for older camera models. Using the correct cable specified for your camera series ensures proper pinout and reliable communication with the mount.

    My mount is a Celestron AVX. Is this the correct cable to use with a QHY5III-462C for guiding?

    Yes. The Celestron AVX mount features a standard ST-4 autoguider port. This cable will correctly link your QHY5III-462C camera to the AVX mount, allowing your software to send guide corrections for precise tracking.

  • Compatibility QHY5III Series Cameras
    Connection Type ST-4

    • ST-4 Guiding Cable for QHY5III Series

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  • QHYCCD Warranty