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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 Adapter Kit - Combo D1

QHYCCD Adapter Kit - Combo D1

by QHYCCD
SKU QHY-020107
$40.00 - $40.00
$40.00
$40.00 - $40.00
$40.00
Price Match Policy!
  • Connects QHYCCD cameras to telescopes and accessories
  • Provides multiple spacers for achieving correct back focus
  • Ensures a rigid, threaded connection in your imaging train
  • Designed to integrate with various correctors and filter wheels
  • Simplifies the process of building a stable optical path
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • QHYCCD Adapter Kit - Combo D1

    The QHYCCD Adapter Kit - Combo D1 is a curated collection of spacers and adapters designed to solve the critical challenge of achieving precise back focus. This kit provides the necessary components to rigidly connect your QHYCCD camera to various telescopes, field flatteners, reducers, and other accessories. By enabling you to dial in the exact spacing required by your optical corrector, the Combo D1 kit ensures your imaging train is both mechanically stable and optically optimized for sharp stars across the entire field.

    Achieve Precise Back Focus with Your QHYCCD Camera

    Nearly all astrophotography optical systems, especially those with fast focal ratios or field correctors, have a strict back focus requirement—typically 55mm, but this can vary. Failing to meet this distance results in elongated, comatic stars at the edges of your images. The QHYCCD Adapter Kit - Combo D1 eliminates the guesswork by providing a modular system of threaded extensions, allowing you to build the perfect optical path length for your specific setup, whether you're using an off-axis guider, filter wheel, or both.

  • What is the main purpose of the QHYCCD Adapter Kit - Combo D1?

    The primary purpose of the QHYCCD Adapter Kit - Combo D1 is to provide a comprehensive set of spacers and connectors to achieve the precise back focus distance required by your telescope's flattener, reducer, or coma corrector. This ensures optimal optical correction and sharp stars across your entire image sensor.

    Why is correct back focus so critical for imaging with the QHYCCD Combo D1 kit?

    Correct back focus is essential because optical correctors (flatteners, reducers, coma correctors) are designed to work at a specific distance from the sensor. If the spacing is incorrect, you will see optical aberrations, most commonly seen as elongated or misshapen stars in the corners and edges of your photographs. The Combo D1 kit provides the tools to set this distance accurately.

    How do I use the QHYCCD Adapter Kit - Combo D1 to get 55mm of back focus for my coma corrector?

    You would first determine the back focus of your specific QHYCCD camera (e.g., 17.5mm). Then, you select adapters from the Combo D1 kit that, when added to your camera's back focus, total the required 55mm. This creates a solid, threaded column from your corrector to your camera sensor at the exact distance needed for a flat field in your Newtonian telescope.

    I have a QHYCCD camera, a filter wheel, and an OAG. Can the Combo D1 kit connect them all?

    Yes, this is a primary use case for the QHYCCD Adapter Kit - Combo D1. You would assemble your imaging train (camera > filter wheel > OAG > corrector) and then use the various spacers in the kit to fill any remaining gap to achieve the total back focus distance required by your corrector. The kit is designed to provide the flexibility for these more complex setups.

    Will the QHYCCD Combo D1 kit work with non-QHYCCD accessories?

    The adapters in the QHYCCD Combo D1 kit likely use standard threads like M42x0.75 (T-thread) or M48x0.75 (2" filter thread). While designed for the QHYCCD ecosystem, they will often be compatible with other brands' accessories that use these common astronomical threads. However, you should always verify the thread types of your specific equipment.

    Can using the QHYCCD Adapter Kit - Combo D1 help reduce tilt in my imaging train?

    Yes. A major benefit of using a dedicated adapter kit like the Combo D1 is that it relies on rigid, threaded connections instead of compression rings or push-fit adapters. Threaded connections create a more stable and orthogonal imaging train, significantly reducing the chances of sensor tilt which can ruin image sharpness in one or more corners.

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  • QHYCCD Warranty