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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.
PrimaLuceLab Adapter from M56 to M54 with Stop Ring for ESATTO 2"

PrimaLuceLab Adapter from M56 to M54 with Stop Ring for ESATTO 2"

by PrimaLuceLab
SKU PLL-PL3600242
$95.00 - $95.00
$95.00
$95.00 - $95.00
$95.00
Price Match Policy!
  • Connects accessories with M54x0.75 female threads to the ESATTO 2" focuser
  • Threads directly onto the ESATTO 2" M56 draw tube
  • Integrated stop ring allows for precise 360° rotational framing
  • Consumes only 4mm of optical path length
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • PrimaLuceLab Adapter from M56 to M54 with Stop Ring for ESATTO 2"

    The PrimaLuceLab Adapter from M56 to M54 with Stop Ring for ESATTO 2" provides a rigid, threaded connection for your M54-threaded accessories, consuming a minimal 4mm of optical path. This adapter is specifically designed to integrate your camera, off-axis guider, or filter wheel seamlessly with the ESATTO 2" robotic focuser's M56 draw tube.

    Secure M54 Connection with Just 4mm of Back Focus

    This adapter converts the M56 female thread on the ESATTO 2" draw tube to a standard M54x0.75 female thread, opening up compatibility with a wide range of imaging equipment. Its design prioritizes a minimal profile, adding only 4mm of total thickness (1.5mm for the adapter and 2.5mm for the stop ring) to your imaging train, preserving critical back focus for complex setups.

    Precision Framing with the Integrated M54 Stop Ring

    The key feature of this adapter is the independent stop ring. This mechanism allows you to thread your camera on fully, then slightly loosen the stop ring to rotate your entire imaging train to the perfect orientation. Once you have framed your target, like aligning your sensor with the long axis of the Andromeda Galaxy (M31), you simply tighten the stop ring to lock the camera's angle securely without losing rigidity.

  • What is the purpose of the PrimaLuceLab M56 to M54 adapter for the ESATTO 2"?

    Its primary purpose is to connect astrophotography accessories that use a female M54x0.75 thread—such as many cameras, filter wheels, and off-axis guiders—to the M56 female thread found on the draw tube of the PrimaLuceLab ESATTO 2" robotic focuser.

    How does the stop ring on the PrimaLuceLab M56 to M54 adapter improve my astrophotography?

    The stop ring allows you to precisely set the rotational angle of your camera sensor. This is crucial for composition, letting you frame celestial objects exactly as you wish. You can loosen the ring, rotate the camera for the perfect shot, and then lock it in place without having to unthread your entire imaging train.

    What is the optical length of the PrimaLuceLab M56 to M54 adapter?

    The adapter adds a total of 4mm to your optical path. This is comprised of the 1.5mm thick adapter body and the 2.5mm thick stop ring. This minimal length helps conserve precious back focus, which is essential when using reducers or other accessories with strict spacing requirements.

    Can I use this PrimaLuceLab adapter to better frame the Orion Nebula (M42) with my rectangular sensor?

    Yes, this is an ideal use case. The stop ring allows you to orient your camera's sensor to best fit the sprawling nebulosity of M42. You can align the long axis of your sensor with the nebula's most interesting features, ensuring you capture the entire complex in a single, well-composed frame.

    Will this adapter work with any focuser, or just the ESATTO 2"?

    This adapter is specifically designed for the PrimaLuceLab ESATTO 2" focuser, which features an M56 female thread on its draw tube. While it might physically thread onto other focusers with an M56 male thread, it is optimized for use within the PrimaLuceLab ecosystem.

    When connecting my camera to an ESATTO 2" focuser on my refractor, is this the adapter I need?

    If your camera or the next accessory in your imaging train (like a filter wheel) has a female M54x0.75 thread, then this is the correct adapter to connect it to the ESATTO 2". It provides a secure, rotatable, and low-profile connection.

  • Focuser Side Thread M56 x 1 Male
    Camera Side Thread M54 x 0.75 Female
    Compatibility PrimaLuceLab ESATTO 2" Focuser
    Optical Length 4mm (1.5mm adapter + 2.5mm stop ring)
    Special Feature Integrated stop ring for camera rotation

    • Adapter from M56 to M54 with Stop Ring

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  • PrimaLuceLab 1-Year Warranty