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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 M42(M) Canon 10mm Adapter

QHYCCD M42(M) Canon 10mm Adapter

by QHYCCD
SKU QHY-020072
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00
Price Match Policy!
  • Connects Canon EF Lenses to M42 Female Threads
  • Provides a Fixed 10mm Optical Path Length
  • M42x0.75 Male "T-Thread" Interface
  • Enables Wide-Field Imaging with Photographic Lenses
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • QHYCCD M42(M) Canon 10mm Adapter

    The QHYCCD M42(M) Canon 10mm Adapter connects Canon EF-mount lenses to any camera or accessory with a female M42x0.75 thread. This adapter provides exactly 10mm of optical path length, which is critical for achieving correct back focus with specific QHYCCD cameras and filter wheel combinations.

    Adapt Canon EF Lenses with a Precise 10mm M42 Connection

    This adapter allows you to repurpose high-quality Canon EF-mount photographic lenses for astrophotography with your QHYCCD camera. By providing a standard male M42x0.75 "T-thread" interface, it opens up wide-field imaging possibilities, from capturing the full expanse of the Andromeda Galaxy (M31) to sweeping vistas of the Milky Way.

    The core function of this adapter is to establish a precise 10mm spacing in the optical path. This fixed distance is an essential component for building imaging trains that achieve correct back focus, ensuring sharp stars across the entire field when combined with specific QHYCCD cameras and accessories.

  • What is the QHYCCD M42(M) Canon 10mm Adapter used for?

    It connects a Canon EF-mount lens to a camera or accessory with female M42 T-threads, adding exactly 10mm to the optical path. This is ideal for using photographic lenses for wide-field astrophotography with cooled astronomy cameras.

    How would I use the QHYCCD 10mm adapter to image the Rho Ophiuchi cloud complex?

    For a wide target like the Rho Ophiuchi region, you would attach a fast Canon EF lens (e.g., a 135mm or 200mm lens) to this adapter. The adapter then threads onto your QHYCCD camera, letting you use the lens's wide field of view to capture the entire nebula complex. The fixed 10mm spacing is a key part of the calculation for achieving sharp focus from edge to edge.

    Does the QHYCCD M42 Canon adapter support electronic aperture or autofocus?

    No. This is a purely mechanical adapter. It provides a secure physical connection and precise spacing but does not have electronic contacts to transmit data. Focus and aperture must be set manually on the lens itself.

    What does the "10mm" in the QHYCCD M42 Canon Adapter's name refer to?

    The "10mm" specifies the optical path length, or thickness, of the adapter. When inserted into your imaging train, it increases the distance between the lens and the camera sensor by exactly 10mm, a critical value for back focus calculations.

    Can I use this QHYCCD adapter with a filter wheel?

    Yes, this adapter is designed to be used as part of an imaging train that may include a filter wheel. You would typically place it between the Canon lens and the filter wheel, ensuring the total back focus distance matches your camera's requirement. You must account for the 10mm path length of this adapter when calculating your total spacing.

    Is the QHYCCD M42 adapter compatible with Canon EF-S lenses?

    This adapter is designed for the Canon EF mount. While EF-S lenses can physically attach to an EF mount, their rear elements often protrude further back. This could potentially interfere with filters or the camera's optical window. It is recommended for use with full-frame compatible EF lenses to ensure clearance.

  • QHYCCD Warranty