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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 M54x0.75 Inverter Ring

Baader M54x0.75 Inverter Ring

by Baader Planetarium
SKU BAA-2458061
$68.00 - $68.00
$68.00
$68.00 - $68.00
$68.00
Price Match Policy!
  • Converts female M54x0.75 threads to male M54x0.75 threads
  • Enables connection between two components with female M54 ports
  • Part of the Baader Planetarium M54 adapter ecosystem
  • Low-profile design minimizes added optical path length
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader M54x0.75 Inverter Ring

    The Baader M54x0.75 Inverter Ring is a specialized adapter designed to solve a common but critical problem in astrophotography imaging trains: connecting two components that both feature female M54x0.75 threads. This ring provides the necessary male M54x0.75 thread to bridge the gap, ensuring a secure, light-tight connection where one would otherwise be impossible.

    Convert Female M54x0.75 Threads to Male

    The sole function of this inverter ring is to act as a thread gender changer for the M54x0.75 standard. If your focuser drawtube, off-axis guider, or filter wheel terminates in a female M54x0.75 thread and the next accessory in your train also has a female M54x0.75 input, this ring is the essential component that allows them to be joined together.

    A Key Component in the Baader M54 Adapter System

    While simple, the M54x0.75 Inverter Ring is a crucial part of the comprehensive Baader Planetarium adapter system. It's engineered to integrate seamlessly with other Baader M54 components, like their protective T-rings and UFC filter systems, maintaining precise spacing and optical alignment. Its low-profile construction is designed to add minimal back focus, preserving critical distance in complex imaging setups.

  • What is the primary purpose of the Baader M54x0.75 Inverter Ring?

    Its primary purpose is to solve a thread mismatch. The Baader M54x0.75 Inverter Ring converts a female (internal) M54x0.75 thread into a male (external) M54x0.75 thread. This allows you to connect two pieces of equipment that both have female M54 threads, such as connecting some focusers directly to certain camera adapters or filter wheels.

    How do I know if I need this M54x0.75 Inverter Ring for my setup?

    You need this ring if you have two accessories you want to connect, and upon inspection, you see that both connection ports have internal M54x0.75 threads. If you try to screw them together and find there are no external threads on either piece to engage, the inverter ring provides the necessary male thread to join them.

    Will the Baader M54x0.75 Inverter Ring add significant length to my optical train?

    No. While any adapter adds some length, this inverter ring is designed to be as "thin" or low-profile as possible. Its function is to change the thread gender while consuming a minimal amount of precious back focus, a critical consideration for setups involving reducers or flatteners with strict spacing requirements.

    Can I use the Baader M54x0.75 Inverter Ring to connect a ZWO camera to my Baader SteelTrack focuser?

    This is a common scenario where this ring is needed. Some configurations of the Baader SteelTrack focuser present a female M54 thread, and many ZWO imaging trains (especially when using their M54 filter drawers) also rely on female M54 ports. The inverter ring would be the correct adapter to join these specific components securely.

    Is this Baader M54x0.75 ring compatible with accessories from other brands?

    Yes. M54x0.75 is a common standard in astrophotography. As long as the accessories from another manufacturer adhere strictly to the M54x0.75mm thread specification, this Baader inverter ring will be fully compatible.

    How does the M54x0.75 Inverter Ring differ from an M54 extension tube?

    An extension tube is designed to add a specific length to the optical path and typically has one male and one female thread. The Baader M54x0.75 Inverter Ring has two male threads (one on each face, effectively) and is designed to add as little length as possible. Its purpose is not spacing, but simply to change a female port into a male one.

  • Thread Type M54 x 0.75 Male (converts female port to male)
    Net weight (kg) 0.01
    Compatible Brands Baader Planetarium, Skywatcher, TS-Optics
    Inner Diameter / Clear Aperture (mm) 51
    Outer Diameter 54
    Type of Adapter Same-Thread Adapter
    Optical length (mm) 8
    Adapters Family M54 System

    • Baader M54x0.75 Inverter Ring

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  • Baader Planetarium Warranty