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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.
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2
Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2

Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2

by Baader Planetarium
SKU BAA-2408317
$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00
Price Match Policy!
  • Connects Sony E/NEX mount cameras to telescopes
  • Ultra-short design adds only 8.3mm of optical length
  • Features three connection standards: T-2, M48, and S52
  • Provides a 46mm clear inner diameter to prevent vignetting
  • Ideal for backfocus-critical systems like HyperStar and fast Newtonians
1 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
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  • Warranty

  • Baader T-Ring Sony E/NEX Bayonet - D52/M48 & T-2

    The Baader T-Ring for Sony E/NEX bayonet cameras is engineered to solve the critical backfocus and vignetting issues common with full-frame mirrorless astrophotography. This adapter adds only 8.3mm of optical path length, enabling use with demanding systems like HyperStar optics, while its wide-body design offers native T-2, M48, and S52 connections. With a potential clear aperture of 46mm, it fully illuminates sensors like those in the Sony Alpha 7 series, eliminating the vignetting that plagues standard T-2 adapters.

    An Ultra-Short 8.3mm Optical Path for Fast Telescopes

    For imagers using fast optical systems like f/2 HyperStars or Newtonians with coma correctors, every millimeter of backfocus is critical. The Baader Wide-T-Ring adds a minimal 8.3mm of mechanical distance to the Sony E-mount's 18mm flange distance. This ultra-short profile allows you to incorporate other accessories like filter drawers or off-axis guiders into your imaging train without exceeding the strict backfocus requirements of your corrector or reducer.

    Versatile Connections: Native T-2, M48, and S52

    Unlike single-thread adapters, this T-Ring offers three connection options in one unit to maximize compatibility and light throughput. The design features an inner T-2 (M42x0.75) thread, a wider M48 (M48x0.75) thread accessible by removing the T-2 insert, and an even larger S52 dovetail ring. This multi-thread system allows you to choose the largest possible connection your optical train supports, directly addressing the primary cause of vignetting.

    • T-2 Thread: Provides backward compatibility with a vast range of standard astro-accessories.
    • M48 Thread: The standard for 2" filters and many full-frame correctors, offering a wider light path than T-2.
    • S52 Dovetail: The widest option, designed for seamless integration with Baader's modular accessory ecosystem for the most secure, unvignetted connection.

    A 46mm Clear Aperture to Eliminate Full-Frame Vignetting

    Standard T-adapters were designed when astro-camera sensors were small, and their narrow T-2 openings severely vignette modern full-frame sensors, causing darkened corners in your images. The Baader Wide-T-Ring's internal design is oversized to overcome this. When paired with the optional Baader S52 2" nosepiece, it provides an unobstructed 46mm clear aperture, ensuring that the entire sensor of a Sony Alpha 7S or similar camera is evenly illuminated, even in very fast optical systems.

    Seamless Integration with the Baader Astro System

    This T-Ring is more than a simple adapter; it's a gateway to Baader's extensive ecosystem of imaging accessories. The S52 dovetail provides a direct, secure attachment to the Baader UFC (Universal Filter Changer) system with the UFC S52 camera-adapter (#2459119). This allows you to place filters directly in front of the camera with minimal added backfocus. For connecting to large focusers or correctors, the S52 to M68 adapter (#2458252) creates a robust, wide-aperture connection to your telescope.

  • Why does the Baader Sony E/NEX T-Ring have three different connection types?

    The three connections (T-2, M48, and S52) provide maximum flexibility and help prevent vignetting. You can use the standard T-2 for universal compatibility, step up to M48 for use with 2" filter threads and full-frame correctors, or use the largest S52 dovetail for a rigid, wide-aperture connection to other Baader accessories like the Universal Filter Changer (UFC).

    Will this Baader T-Ring work with my Sony a6400 APS-C camera?

    Yes, absolutely. This T-Ring is compatible with any camera that uses the Sony E/NEX bayonet mount, including both full-frame (Alpha 7/9 series) and APS-C (Alpha 6000 series) models. While vignetting is less of a concern with smaller APS-C sensors, the ultra-short 8.3mm optical path is still highly beneficial for use with reducers and correctors.

    How do I attach the Baader E/NEX T-Ring to a standard 2" focuser?

    You have two main options. You can thread a standard M48-to-2" nosepiece into the T-Ring's M48 thread. For the widest possible light path and to achieve the full 46mm clear aperture, the recommended accessory is the Baader S52/2" barrel (#2958551), which clamps securely onto the T-Ring's outer S52 dovetail.

    I'm using a HyperStar on my Celestron EdgeHD 8 with a Sony A7S. Is this the right Baader adapter?

    Yes, this is the ideal adapter for that exact setup. The HyperStar system has extremely limited backfocus, and this T-Ring's minimal 8.3mm optical length is specifically designed for such applications. Its wide-aperture design also ensures the fast f/2 light cone from the HyperStar fully illuminates your A7S's full-frame sensor without vignetting.

    What is the main benefit of the 8.3mm optical length on this Baader T-Ring?

    The primary benefit is compatibility with optics that have very short backfocus requirements. Many flatteners, reducers, and coma correctors require a precise sensor distance (typically 55mm). A standard, thicker T-ring can consume too much of that budget, leaving no room for filter wheels or off-axis guiders. The 8.3mm length of the Baader T-Ring preserves that critical distance for other accessories.

    Can I use filters with the Baader Sony E/NEX T-Ring?

    Yes. The most effective way is to integrate the T-Ring with the Baader Universal Filter Changer (UFC) system using the optional UFC S52 dovetail adapter (#2459119). This allows you to place a filter slider or wheel directly in front of the camera. Alternatively, you can use a separate M48-threaded filter drawer between the T-ring and your telescope, provided you have sufficient backfocus.

  • Camera Mount Sony E/NEX Bayonet
    Telescope Side Threads T-2 (M42x0.75), M48 (M48x0.75), S52 Dovetail
    Optical Length Added 8.3 mm
    Clear Aperture Up to 46 mm (with optional S52 2" nosepiece)
    Material Black Anodized Aluminum
    Net weight (kg) 0.04
    Inner Diameter / Clear Aperture (mm) 41
    Outer Diameter 60
    Type of Adapter Camera Adapter

    • Baader T-Ring for Sony E/NEX Bayonet

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  • Baader Planetarium Warranty