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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 M48x0.75 female adapter for ARCO 2"

PrimaLuceLab M48x0.75 female adapter for ARCO 2"

by PrimaLuceLab
SKU PLL-PL3600424
$49.00 - $49.00
$49.00
$49.00 - $49.00
$49.00
Price Match Policy!
  • Connects ARCO 2" Rotator to M48x0.75 Male Threads
  • Adds Only 2mm of Optical Thickness
  • Creates a 22mm Total Path Length with ARCO 2"
  • Enables Integration with Common Correctors and Focusers
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  • Description
  • FAQ
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  • M48x0.75 female adapter for ARCO 2"

    The PrimaLuceLab M48x0.75 female adapter for the ARCO 2" rotator adds just 2mm of optical thickness, enabling a secure, rigid connection to common field flatteners, reducers, and focusers. When installed, the total optical path of the rotator and adapter becomes a minimal 22mm, preserving critical back focus in your imaging train.

    Seamless M48 Integration for Your ARCO 2" Rotator

    This adapter directly threads onto the ARCO 2" rotator, presenting a female M48x0.75 thread to your imaging train. This is the standard connection for many popular coma correctors, field flatteners, and off-axis guiders, allowing you to integrate the high-precision ARCO rotator without custom machining.

    Engineered to be as thin as possible, the adapter contributes only 2mm to the optical path. This brings the total thickness of the ARCO 2" rotator assembly to 22mm, a critical factor for systems with limited back focus, such as those using reducers or fast refractors.

  • What is the total optical thickness when using the M48x0.75 female adapter with the ARCO 2" rotator?

    The adapter itself adds 2mm of thickness. When combined with the 20mm thick ARCO 2" rotator, the total optical path length is 22mm. You must account for this distance in your back focus calculations.

    How does the M48x0.75 female adapter for ARCO 2" help when imaging with a Newtonian and coma corrector?

    Most coma correctors for Newtonian telescopes terminate in a male M48x0.75 thread. This adapter allows you to place the ARCO 2" rotator directly behind the corrector for precise field de-rotation, which is essential for achieving round stars during long exposures on an alt-azimuth mount or for framing objects perfectly on an equatorial mount.

    Can I use this M48x0.75 female adapter for ARCO 2" to connect directly to my camera?

    It depends on your camera's connection. If your camera or filter wheel has a male M48x0.75 thread and the back focus is correct, this adapter will create the physical connection. Always verify your total back focus distance against your corrector's requirements.

    Do I need the M48x0.75 female adapter for ARCO 2" if I am connecting to an ESATTO focuser?

    This depends on the specific ESATTO model and any reducers in your train. Many ESATTO focusers have optional adapters that terminate in M48 male threads, in which case this adapter would be the correct choice to attach the ARCO 2" rotator.

    Will this M48x0.75 adapter work with my full-frame camera and reducer on my Celestron EdgeHD telescope?

    Yes, this is a common application. Reducers for EdgeHD telescopes often require a specific back focus and use M48 threads to connect to the camera. This adapter lets you insert the ARCO 2" rotator into that M48-threaded imaging train, but you must ensure the final 22mm thickness of the rotator and adapter fits within your reducer's back focus budget.

    Is this adapter required to control the ARCO 2" with a SESTO SENSO 2?

    No, this adapter is purely a mechanical connector. The electronic control of the ARCO 2" rotator is managed through its connection to a SESTO SENSO 2 or an EAGLE computer, regardless of which mechanical adapters are used.

  • Adapter Type Female M48x0.75 Adapter
    Compatibility ARCO 2" Rotator
    Optical Thickness (Adapter Only) 2mm
    Optical Thickness (Combined) 22mm (with ARCO 2" Rotator)

    • M48x0.75 female adapter for ARCO 2"

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  • PrimaLuceLab 1-Year Warranty