Skip to content
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.
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.
SVBONY 1.25" T-Adapter Mount with M42 Threads
SVBONY T-Adapter Mount with M42 Threads - 1.25"
SVBONY T-Adapter Mount with M42 Threads - 1.25"
SVBONY T-Adapter Mount with M42 Threads - 1.25"
SVBONY T-Adapter Mount with M42 Threads - 1.25"
SVBONY T-Adapter Mount with M42 Threads - 1.25"
SVBONY 1.25" T-Adapter Mount with M42 Threads

SVBONY T-Adapter Mount with M42 Threads - 1.25"

by SVBONY
SKU SV-F9103A
$3.64 - $3.64
$3.64
$3.64 - $3.64
$3.64
Price Match Policy!
  • Connects M42 T-thread cameras to 1.25" focusers
  • Standard M42 x 0.75 male threads
  • Fits any telescope with a 1.25" eyepiece holder
  • Lightweight design for portable setups
  • Enables prime-focus astrophotography
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • 1.25" T-Adapter Mount with M42 Threads

    This 1.25" T-Adapter provides the essential link between your telescope and a camera equipped with standard M42 T-threads. It allows you to bypass the camera's lens and use your telescope as a prime photographic lens, seating your camera sensor directly at the telescope's focal plane for maximum image brightness and detail.

    The Essential M42 T-Thread to 1.25" Connection

    This adapter solves the fundamental problem of physically connecting your imaging equipment to your telescope. One end features standard male M42 x 0.75 threads (the universal "T-thread") for a secure connection to your DSLR's T-ring or a dedicated astronomy camera. The other end is a 1.25" barrel that slides into any standard telescope focuser or diagonal, just like an eyepiece.

    Secure Prime-Focus Imaging with a 1.25" Barrel

    By creating a rigid, threaded connection, the adapter ensures your camera remains perfectly aligned with the telescope's optical axis. This prevents tilt, which can ruin stars in the corners of your frame, and maintains a consistent focal plane for sharp images. Its durable, lightweight construction adds minimal weight to your setup, making it ideal for portable rigs and field use without compromising stability.

  • What is the main purpose of this 1.25" T-Adapter with M42 threads?

    This adapter's primary function is to connect a camera with M42 T-threads to a telescope's 1.25" focuser or diagonal. This allows you to perform prime-focus astrophotography, where the telescope itself acts as the camera's lens.

    How can I use this M42 adapter to connect my Canon or Nikon DSLR to a telescope?

    To connect a DSLR, you first need a brand-specific T-Ring (sold separately) that fits your camera's lens mount (e.g., Canon EOS or Nikon F-mount). The T-Ring has female M42 threads that screw directly onto this adapter. The adapter's 1.25" barrel then slides into your telescope's focuser.

    Will this 1.25" T-Adapter work with my 8" Schmidt-Cassegrain telescope?

    Yes. If your 8" SCT has a standard 1.25" visual back or a 1.25" diagonal, this adapter will fit perfectly. It is compatible with virtually any telescope that accepts 1.25" eyepieces, including refractors, reflectors, and catadioptric systems.

    Is this M42 T-Adapter suitable for imaging planets like Jupiter with a dedicated astronomy camera?

    Absolutely. This is a common and effective way to connect a planetary camera to your telescope. Most dedicated planetary cameras have either M42 threads or a 1.25" nosepiece. This adapter provides the secure, threaded M42 connection needed for a stable imaging train.

    What kind of cameras are compatible with this 1.25" adapter?

    This adapter is compatible with two main types of cameras:

    • DSLR or Mirrorless Cameras: Requires a camera-specific T-Ring (not included).
    • Dedicated Astronomy Cameras: Works with cameras that have female M42 x 0.75 T-threads for connection.

    Will this 1.25" T-Adapter cause vignetting with my camera sensor?

    Vignetting (darkening of the corners) is determined by the size of your camera's sensor relative to the adapter's barrel size. The 1.25" barrel is the limiting factor and is generally suitable for cameras with smaller sensors, such as those found in planetary cameras or entry-level deep-sky cameras. It may cause significant vignetting on cameras with larger APS-C or full-frame sensors.

  • SVBONY 1-Year Warranty