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Baader Adapter - Zeiss M44(F)/T-2(F)

Baader Adapter - Zeiss M44(F)/T-2(F)

by Baader Planetarium
SKU BAA-1508041
$49.00 - $49.00
$49.00
$49.00 - $49.00
$49.00
Price Match Policy!
  • Connects male Zeiss M44 threads to male T-2 threads
  • Integrates legacy Zeiss optics with the modern Baader Astro T-2 System
  • Lets M44 components be used on T-2 star diagonals
  • Precision-machined for a rigid, non-flexing connection
  • Low-profile design minimizes added optical path length
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader Adapter - Zeiss M44(F)/T-2(F)

    The Baader Zeiss M44(F)/T-2(F) Adapter provides the essential mechanical link between components with a male Zeiss M44 thread and accessories with a male T-2 (M42x0.75) thread. This single component is the key to unlocking new capabilities for high-quality legacy equipment, allowing you to use components with an M44 thread on any T-2 star diagonal prism or Zeiss mirror diagonal.

    Integrating Classic Zeiss M44 Optics into the Baader T-2 System

    Components with a male Zeiss M44 connection thread do not fit today's common T-2 and M48 standards. This adapter solves that problem by offering a direct, secure conversion to the Baader Astro T-2 System, which has become a de facto standard for amateur astronomy hardware.

    By installing this adapter, you can give valuable vintage optics a new lease on life. It provides a robust, threaded connection that prevents the flexure and misalignment common with generic, set-screw-based solutions, which is critical for maintaining sharp focus during astrophotography.

    • Legacy Modernization: Makes classic Zeiss optics fully compatible with the entire range of Baader T-2 accessories, from extension tubes to Off-Axis Guiders.
    • System Modularity: Unlocks the ability to build custom, compact optical configurations by combining your Zeiss objective with T-2 components like diagonals, Barlows, or telecompressors.

  • What is the primary use for the Baader M44/T-2 adapter?

    This adapter is designed specifically to connect components that have a male (external) Zeiss M44 thread to accessories that have a male (external) T-2 thread (M42x0.75), such as T-2 diagonal prisms. Its main purpose is to modernize older, high-quality Zeiss equipment for use with current astronomy accessories.

    Will this Baader adapter work with any M44 thread?

    No. It is crucial to note that this adapter is for the specific Zeiss M44 thread standard. Other M44 threads with different pitches exist (e.g., M44x1 or M44x0.75). You must confirm your equipment uses the Zeiss M44 standard for this adapter to fit correctly.

    Does the Baader M44/T-2 adapter add significant length to the optical path?

    As a low-profile ring adapter, it is engineered to add minimal optical path length, preserving as much precious back focus as possible. Baader gives the optical length as 14 mm, so check that your focus travel can accommodate it. Always verify you have sufficient focus travel for your intended accessory chain.

    How do I know if my Zeiss equipment has a male M44 thread?

    The best way is to consult the original documentation for your Zeiss telescope, spotting scope, or accessory. In the absence of documentation, you may need to carefully measure the outer diameter of the thread on your equipment. A diameter close to 44mm is a strong indicator, but confirming the specific Zeiss standard is key for compatibility.

  • Net weight (kg) 0.01
    Compatible Brands Astro T-2, Baader Planetarium, Zeiss
    Inner Diameter / Clear Aperture (mm) 40
    Outer Diameter 49.5
    Type of Adapter Reducing Adapter
    Optical length (mm) 14
    T-2 Part # 09
    Inner Connection (eyepiece/-camera-sided) M44
    Inner Connection (lens sided) M42 x 0.75 (T-2)
    Adapters Family T-2 System
    Telescope-side connection M42x0.75 (T2) Female
    Camera-side connection M44x1 Female (Zeiss)

    • Baader Adapter - Zeiss M44(F)/T-2(F)

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  • Baader Planetarium Warranty Policy