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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.
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 DT-Adapter II - T-2/SP54

Baader DT-Adapter II - T-2/SP54

by Baader Planetarium
SKU BAA-2458040
$42.00 - $42.00
$42.00
$42.00 - $42.00
$42.00
Price Match Policy!
  • Connects T-2 (M42x0.75) accessories to the Baader SP54 system
  • Adapts to the M54 threads found on Baader Hyperion eyepieces
  • Engineered for the shortest possible optical path in eyepiece projection
  • Enables direct coupling of digital cameras for high-magnification imaging
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  • Description
  • FAQ
  • Specifications
  • In the Box
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  • Warranty

  • Baader DT-Adapter II - T-2/SP54

    The Baader DT-Adapter II - T-2/SP54 is the essential component for integrating the universal T-2 accessory system with Baader's SP54 (M54) standard, found on their Hyperion eyepieces. This digital T-adapter is specifically engineered to provide the shortest possible connection between a Hyperion eyepiece and a digital camera sensor for high-magnification eyepiece projection photography.

    Bridging the Baader System: T-2 to SP54 Adaptation

    This adapter solves a critical connection challenge by creating a robust, direct link between the two most common thread systems in the Baader ecosystem. It allows you to attach any accessory with a male T-2 thread—such as a camera-specific T-ring, off-axis guider, or filter wheel—directly to the female SP54 (M54) thread on a Baader Hyperion eyepiece. This transforms your high-power visual eyepiece into a capable imaging tool.

    Optimized for Eyepiece Projection: A Minimal-Path Design

    In eyepiece projection, every millimeter of distance between the eyepiece and the camera sensor can introduce vignetting and degrade image sharpness. The DT-Adapter II is designed from the ground up to minimize this distance. By creating the most compact and rigid coupling possible, it ensures your camera's sensor is placed at the optimal focal point, preserving the image quality needed for detailed planetary, lunar, or solar imaging.

  • What is the primary use for the Baader DT-Adapter II - T-2/SP54?

    The Baader DT-Adapter II is used to connect accessories with a standard T-2 (M42x0.75) thread to an eyepiece or other component that has a larger SP54 (M54) thread. Its main application is for eyepiece projection photography, particularly with Baader Hyperion eyepieces.

    Which eyepieces is the Baader DT-Adapter II - T-2/SP54 designed for?

    This adapter is specifically designed to work with eyepieces that feature the Baader SP54 thread system, most notably the Baader Hyperion series. It allows you to convert the eyepiece's native M54 thread into a universal T-2 connection for imaging.

    How does the Baader DT-Adapter II help with eyepiece projection imaging?

    The adapter is engineered to provide the shortest possible optical path between the eyepiece and the camera. This is critical for minimizing vignetting (darkening of image corners) and maintaining the highest possible image sharpness by keeping the camera sensor close to the eyepiece's focal plane.

    Can I use the Baader DT-Adapter II to attach my Canon or Nikon DSLR to a Hyperion eyepiece?

    Yes, but you will need one additional component. The Baader DT-Adapter II provides the necessary T-2 thread on the eyepiece side. You must then add a camera-specific T-Ring (e.g., a T-Ring for Canon EF mount) that threads onto the DT-Adapter and has the bayonet mount for your specific camera body.

    What is the difference between the T-2 and SP54 threads on the Baader DT-Adapter II?

    They are two different thread standards. T-2 is the de-facto standard for astronomy accessories, with a metric M42x0.75 thread. SP54 is a larger M54 thread used by Baader on their Hyperion eyepieces and other components to provide a wider, more rigid connection that avoids vignetting with large sensors.

    Why is minimizing the optical path important when imaging the Moon with the Baader DT-Adapter II?

    When imaging a bright, high-contrast target like the Moon or Jupiter through eyepiece projection, maintaining sharpness is paramount. The minimal length of the Baader DT-Adapter II ensures that the projected image remains as flat and well-focused as possible across your camera's sensor. A longer, non-optimized connection can introduce optical aberrations and reduce the fine detail you can capture in craters and cloud bands.

  • Input Connection T-2 (M42x0.75) Male Thread
    Output Connection SP54 (M54) Female Thread
    Primary Application Eyepiece Projection with Hyperion Eyepieces
    Net weight (kg) 0.01
    Type of Adapter Expanding Adapter

    • Baader DT-Adapter II - T-2/SP54

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  • Baader Planetarium Warranty