Skip to content
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.
PrimaLuceLab Adapter ESATTO 2" for Sky-Watcher/Orion Newton 250 f4 and f5

PrimaLuceLab Adapter ESATTO 2" for Sky-Watcher/Orion Newton 250 f4 and f5

by PrimaLuceLab
SKU PLL-PL3600237
$165.00 - $165.00
$165.00
$165.00 - $165.00
$165.00
Price Match Policy!
  • Enables installation of the ESATTO 2" motorized focuser
  • Designed specifically for Sky-Watcher/Orion Newton 250 f/4 and f/5 telescopes
  • Maintains the original back focus distance to ensure prime focus for imaging
  • Uses existing mounting holes on the optical tube—no drilling required
  • Features orthogonality adjustment screws for precise focuser collimation
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • PrimaLuceLab Adapter for ESATTO 2" on Sky-Watcher/Orion Newton 250 f/4 & f/5

    This PrimaLuceLab adapter provides the essential mechanical link to upgrade your Sky-Watcher or Orion 250mm f/4 or f/5 Newtonian reflector with the precision of an ESATTO 2" robotic focuser. Engineered for a perfect fit, it replaces the telescope's original focuser using the existing mounting holes, allowing you to achieve automated, repeatable focusing for serious astrophotography without permanently modifying your optical tube.

    Custom-Fit for Sky-Watcher/Orion 250mm OTAs

    This adapter is not a universal part; it is purpose-built for the tube curvature and mounting pattern of the Sky-Watcher and Orion 250mm f/4 and f/5 Newtonian telescopes. This dedicated design ensures a rigid, stable connection between your heavy imaging train and the telescope body. Because it aligns perfectly with the factory-drilled holes, installation is a straightforward bolt-on process that requires no new drilling into your OTA.

    Prime Focus and Orthogonality Control for Astrophotography

    Two critical challenges in imaging are addressed by this adapter's design. It is machined to match the thickness of the original stock focuser, ensuring that you can reach prime focus with your astronomy camera. Furthermore, it incorporates orthogonality adjustment screws, allowing you to precisely collimate the focuser's drawtube so it is perfectly perpendicular to the telescope's optical axis. This capability is vital for achieving sharp, pinpoint stars across the entire field of view, especially in fast f/4 and f/5 optical systems.

  • Why do I need this specific PrimaLuceLab adapter for my Sky-Watcher 250mm Newtonian and the ESATTO 2"?

    This adapter is engineered for the specific mounting hole pattern and tube curvature of the Sky-Watcher/Orion 250mm f/4 and f/5 models. It ensures you can reach prime focus with your camera and provides critical orthogonality (tilt) adjustments for sharp, round stars across your imaging sensor.

    Will I have to drill new holes in my telescope tube to install this ESATTO 2" adapter?

    No. A key feature of this adapter is that it uses the existing, factory-drilled holes from the original focuser. This allows for a direct, bolt-on installation without any permanent modification to your telescope's optical tube.

    Can I still reach prime focus with my DSLR or dedicated astronomy camera using the ESATTO 2" and this adapter?

    Yes. The adapter is designed to maintain the same optical path length as the original focuser it replaces. This ensures you have the correct spacing to achieve sharp prime focus with your imaging camera without needing unusual extenders or modifications.

    How do I ensure sharp stars across the field when imaging the Veil Nebula (NGC 6960) with my f/4 Newtonian and this adapter?

    The adapter includes orthogonality adjustment screws. For a wide target like the Veil Nebula (NGC 6960) in a fast f/4 system, you must ensure your camera sensor is perfectly perpendicular to the light path. These screws allow you to fine-tune the tilt of the ESATTO 2" focuser, eliminating elongated stars in the corners of your image.

    When imaging the Andromeda Galaxy (M31) with my 250mm f/5 Newtonian, what is the main benefit of this adapter?

    The main benefit is that it enables the use of the ESATTO 2" focuser for precise, automated focusing. For a large target like the Andromeda Galaxy (M31), maintaining critical focus throughout an imaging session is key to resolving fine detail in its dust lanes and star-forming regions. This adapter provides the rigid, collimatable foundation needed for that level of automation.

    Does the PrimaLuceLab ESATTO 2" adapter come with the focuser itself?

    No, this product is the adapter only. The ESATTO 2" robotic focuser must be purchased separately. This adapter provides the custom mechanical interface between that focuser and your specific telescope model.

  • PrimaLuceLab 1-Year Warranty