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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 M110 to M68 with Stop Ring for ESATTO 4"

PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4"

by PrimaLuceLab
SKU PLL-PL3600312
$195.00 - $195.00
$195.00
$195.00 - $195.00
$195.00
Price Match Policy!
  • Connects M68x1 threaded accessories to the ESATTO 4" focuser
  • Features an independent stop ring for precise rotational framing
  • Threads directly onto the M110 drawtube of the ESATTO 4"
  • Low-profile design minimizes consumption of backfocus
  • Machined from aluminum and black anodized for durability
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4"

    The PrimaLuceLab Adapter from M110 to M68 with Stop Ring for ESATTO 4" creates a secure connection between the large M110 drawtube of the ESATTO 4" robotic focuser and accessories using the common M68 thread. This adapter's integrated stop ring allows you to precisely orient your camera for perfect framing of any celestial target, solving a common frustration in complex imaging trains.

    M68 Connection and Rotational Framing for ESATTO 4" Focusers

    This adapter is the essential link for attaching cameras, field flatteners, or reducers with an M68x1 female thread to the observatory-grade ESATTO 4" focuser. Its primary function is mechanical adaptation, but its most critical feature is the independent stop ring. This allows you to achieve perfect framing by threading your camera on, rotating it to the ideal angle, and then locking it securely in place by tightening the stop ring against the focuser body. This eliminates the need to settle for a slightly off-axis composition just because that's where the threads tightened.

  • What is the primary use for the PrimaLuceLab M110 to M68 adapter?

    Its primary use is to connect imaging accessories that have a female M68x1 thread to the male M110x1 thread on the drawtube of the PrimaLuceLab ESATTO 4" robotic focuser. This is common for full-frame cameras and large correctors.

    How does the stop ring on the M110 to M68 adapter work?

    The stop ring provides 360-degree rotational control. You first thread the main adapter body onto the ESATTO 4" focuser. Then, you can slightly loosen it to rotate your attached camera to the exact angle you need for framing. Finally, you tighten the separate stop ring against the focuser body, which locks your chosen orientation securely.

    Does the PrimaLuceLab M110 to M68 adapter add significant length to the optical path?

    No, it is designed to be a low-profile adapter. It consumes a minimal amount of backfocus, making it easier to integrate into imaging trains that have tight spacing requirements between the corrector and camera sensor.

    Is this adapter compatible with the ESATTO 2" or 3" focusers?

    No. This adapter is designed exclusively for the ESATTO 4" focuser, which uses a large M110x1 drawtube thread. It will not fit the smaller threads on the ESATTO 2" or 3" models.

    How can I use this adapter to frame the Horsehead Nebula (Barnard 33) vertically with my camera?

    To frame a target like the Horsehead Nebula vertically, you would attach your camera to the adapter and then thread the adapter onto your ESATTO 4" focuser. Before fully tightening, rotate the entire camera assembly until the nebula is oriented correctly in your live view feed. Once you have the perfect composition, simply tighten the adapter's stop ring to lock it in place for your imaging session.

    I need to connect an M68 reducer to my ESATTO 4" on a large astrograph. Is this the correct adapter?

    Yes, this is the exact application this adapter is designed for. It allows you to rigidly couple accessories with M68 threads, such as reducers or flatteners, to the large-aperture ESATTO 4" focuser often used on astrographs like the Takahashi FSQ-106.

  • PrimaLuceLab 1-Year Warranty