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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.
PrimaLuceLab T2-50.8mm Photographic Adapter

PrimaLuceLab T2-50.8mm Photographic Adapter

by PrimaLuceLab
SKU PLL-PL3304226
$24.00 - $24.00
$24.00
$24.00 - $24.00
$24.00
Price Match Policy!
  • Connects T2 (M42x0.75) threaded cameras and accessories
  • Fits standard 50.8mm (2-inch) focusers and visual backs
  • Features a wide clear aperture to prevent vignetting with large sensors
  • Internal M48 threads accept standard 2-inch astronomy filters
  • Solid, single-piece metal construction with black anodized finish
3 in stock
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • PrimaLuceLab T2-50.8mm Photographic Adapter

    The PrimaLuceLab T2-50.8mm Photographic Adapter connects your T2 (M42x0.75) threaded camera to any standard 2-inch (50.8mm) focuser. This all-metal adapter includes internal M48 threads for 2-inch filters and features a wide clear aperture designed to eliminate vignetting on large-sensor cameras.

    Connect M42x0.75 T2 Threads to Any 50.8mm Focuser

    This adapter serves as the essential link between the universal T2 female thread (M42x0.75) found on most astronomy cameras and accessories and the larger 50.8mm (2-inch) format of modern focusers. It allows you to securely mount your imaging equipment for a rigid, flex-free connection.

    • DSLR/Mirrorless Cameras: Attach a T2-ring specific to your camera brand, then thread it directly onto this adapter to use your camera body at prime focus.
    • Astronomy Cameras: Most dedicated CMOS and CCD cameras already feature a female T2 thread, allowing this adapter to be screwed directly onto the camera body.
    • Accessories: Connect filter wheels, off-axis guiders, and other T2-threaded accessories into your 2-inch imaging train.

    Wide-Aperture Design: Eliminate Vignetting on Large Sensors

    Unlike standard T-adapters that can have a narrow internal bore, this photographic adapter is engineered with a large clear aperture. This design ensures the entire light cone from the telescope reaches your camera sensor without being clipped at the edges.

    For imagers using cameras with APS-C or larger sensors, this is critical. A wider aperture prevents vignetting—the dimming of the corners of your image—resulting in evenly illuminated frames and simplifying post-processing.

    Integrated 48mm Filter Threads and All-Metal Build

    The telescope side of the adapter features a standard M48 female thread, allowing you to attach any 2-inch (50.8mm) filter. This lets you place light pollution, nebula, or color filters directly in the light path without needing a separate filter drawer.

    Constructed entirely from metal with a durable black anodized finish, the adapter is built for rigidity and longevity. The matte black interior helps to absorb stray light, protecting image contrast.

  • How do I use the PrimaLuceLab T2-50.8mm adapter with my DSLR camera?

    To use this adapter with a DSLR or mirrorless camera, you first need a T2-ring (also called a T-ring) made for your specific camera mount (e.g., Canon EOS, Nikon F, Sony E). Remove the camera lens, attach the T2-ring to the camera body, and then screw this PrimaLuceLab adapter into the T2-ring. You can then insert the entire assembly into any 2-inch focuser.

    What is the advantage of the wide aperture on the PrimaLuceLab T2-50.8mm adapter?

    The wide internal aperture prevents vignetting, which is the darkening of the corners of an image. This is a common problem when using cameras with large sensors (like APS-C or full-frame) with adapters that have a narrow internal diameter. The PrimaLuceLab adapter ensures the full, un-clipped light cone from the telescope reaches the sensor for even illumination across the entire frame.

    Can I use 2-inch filters with the PrimaLuceLab T2-50.8mm adapter?

    Yes. The adapter has a female M48 thread on the telescope side of the barrel. This allows you to screw in any standard 2-inch (50.8mm) astronomy filter, such as a light pollution filter, a UHC filter for nebulae, or an IR/UV cut filter.

    Will the PrimaLuceLab T2-50.8mm adapter work with my off-axis guider and ZWO ASI294MC Pro camera?

    Yes, this adapter is well-suited for that setup. The ZWO ASI294MC Pro typically has a female T2 thread. You can connect it to a T2-threaded off-axis guider, and then use this adapter as the final piece to connect the entire imaging train to your 2-inch focuser.

    Why choose the PrimaLuceLab T2-50.8mm adapter over a standard 1.25" T-adapter for my Celestron 8" SCT?

    An 8" SCT gathers a large cone of light. A 1.25" adapter would severely restrict this light path, causing significant vignetting on all but the smallest sensor cameras. The PrimaLuceLab T2-50.8mm adapter uses the larger 2-inch format to preserve the full, illuminated field from your telescope, making it a much better choice for astrophotography with an SCT.

    What is the PrimaLuceLab T2-50.8mm adapter made of?

    The adapter is built entirely from metal and features a black anodized finish. This ensures a rigid, durable connection that will not flex or sag under the weight of a camera, and the matte black interior minimizes internal reflections.

  • EAN Code 8059020773847

    • PrimaLuceLab T2-50.8mm Photographic Adapter

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  • PrimaLuceLab 1-Year Warranty