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Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52
Baader Wide T-Ring Nikon - T-2 & S52

Baader Wide T-Ring Nikon - T-2 & S52

by Baader Planetarium
SKU BAA-2408333
$48.00 - $48.00
$48.00
$48.00 - $48.00
$48.00
Price Match Policy!
  • Connects Nikon F-mount cameras to telescopes
  • Features both a standard T-2 (M42) thread and a larger S52 dovetail
  • Clear aperture: 41 mm (T-2) / 40.9 mm (S52 side)
  • Integrates with the Baader UFC, M48, and M68 accessory systems
1 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader Wide T-Ring Nikon - T-2 & S52

    The Baader Wide T-Ring for Nikon directly addresses the illumination bottleneck of standard T-2 adapters, especially when using full-frame or large-format camera sensors. This ring incorporates both a standard T-2 (M42x0.75) internal thread for universal compatibility and an S52 dovetail connection, which can be adapted to M48 or M68 without the T-2 reduction.

    Dual T-2 and S52 Connections: Beyond the M42 Bottleneck

    A standard T-ring relies solely on the M42 T-2 thread, which was designed decades ago for 35mm film. On modern, large-format digital sensors, this narrow M42 aperture can act as a stop, cutting off light to the corners of the sensor and causing significant vignetting. The Baader Wide T-Ring adds the S52 dovetail format, so your Nikon camera can be connected to M48 or M68 accessories without the T-2 reduction. For this Nikon F version Baader gives a clear aperture of 41 mm (T-2) and 40.9 mm on the S52 side.

    For backward compatibility, an inner T-2 ring is included, allowing you to connect to any standard T-thread accessory. Removing the T-2 insert lets you use the S52 dovetail directly with other Baader adapters.

    The Baader S52 System: Adapting to M48, M68, and UFC

    This Wide T-Ring is more than a simple adapter; it is your camera's entry point into Baader's extensive ecosystem of imaging accessories. The S52 dovetail allows you to create a rigid, wide-aperture connection to various components, ensuring your imaging train is both mechanically solid and optically optimized.

    • M48 Connections: With the S52 / M48 adapter (#2958552), you can connect the ring to popular 2" filter threads and coma correctors.
    • M68 Connections: For large focusers and high-end optical systems, the S52 / M68 adapter (#2458252) provides a robust, large-diameter connection.
    • UFC Integration: Attach your Nikon camera directly to the Baader Universal Filter Changer using the UFC S52 dovetail camera-adapter (#2459119), placing filters as close as possible to the sensor.
    • S52 Barrel: Use the S52 barrel (#2958551) to insert the system directly into a 2" focuser without the T-2 reduction.

    Baader Wide T-Ring vs. A Standard T-2 Ring

    While a standard T-ring offers a simple, low-cost way to attach your camera, its M42 aperture is a known weak point in modern imaging trains. For imagers using full-frame DSLRs or cameras with large APS-C sensors, the vignetting caused by a standard T-ring can be difficult to correct with flat frames, especially with fast optical systems.

    The Baader Wide T-Ring is engineered specifically to solve this problem. Baader states that the illumination of the camera chip improves significantly with its Wide-T-Rings, mainly because of the larger clear aperture; for this Nikon F version it gives 41 mm (T-2) and 40.9 mm on the S52 side.

  • What is the main advantage of the Baader Wide T-Ring over a standard Nikon T-ring?

    The main advantage is the S52 dovetail, which connects the ring to Baader M48, M68 and UFC adapters without the T-2 reduction. Baader states that its Wide-T-Rings improve the illumination of the camera chip significantly, mainly because of the larger clear aperture; for this Nikon F version it gives 41 mm (T-2) and 40.9 mm on the S52 side.

    Can I use the Baader Wide T-Ring with my existing T-2 accessories?

    Yes. The Baader Wide T-Ring includes an inserted T-2 ring, making it fully compatible with all standard T-thread (M42x0.75) accessories like flatteners, off-axis guiders, and extension tubes. You can start with your existing T-2 setup and upgrade to the wider S52 system later.

    How do I connect the Baader Wide T-Ring to a 2" focuser with M48 threads?

    To connect to an M48 (2" filter) thread, you will need the optional Baader S52 / M48 adapter (#2958552). This adapter threads into the Wide T-Ring after removing the inner T-2 insert, giving you a female M48 thread.

    Will this Baader T-ring help reduce vignetting on my full-frame Nikon camera?

    Baader states that its Wide-T-Rings improve the illumination of the camera chip significantly, mainly because of the larger clear aperture. For this Nikon F version Baader gives 41 mm through the T-2 insert and 40.9 mm on the S52 side, so here the S52 path is not wider than the T-2 path.

    What do I need to attach this Baader Wide T-Ring to the Baader UFC filter changer?

    You will need the Baader UFC S52 Dovetail Camera-Adapter (#2459119). This accessory attaches to the Universal Filter Changer base and allows the S52 dovetail on the Wide T-Ring to slide in and lock securely, creating a rigid, wide-aperture connection for placing filters close to your Nikon camera sensor.

    Is this Baader Wide T-Ring compatible with all Nikon cameras?

    This ring is designed for Nikon cameras that use the F-mount, which includes the vast majority of Nikon DSLRs. It is not compatible with the newer mirrorless Z-mount cameras, which require a different adapter.

  • Net weight (kg) 0.03
    Camera Adaptable Nikon F Bajonett
    Compatible Brands Astro T-2, Baader Planetarium, Other
    Inner Diameter / Clear Aperture (mm) 41mm (T-2) / 40.9mm
    Type of Adapter Camera Adapter
    Optical length (mm) 8.4
    Kind T-ring (camera adapter)
    Telescope-side connection S52 dovetail clamp with T-2 (M42x0.75) Female insert
    Camera-side connection Nikon F Bayonet

    • Wide T-Ring

      × 1

    • Inserted T-2 ring

      × 1

  • Baader Planetarium Warranty