What is the purpose of this Starlight Instruments 3.0" adapter?
This adapter's sole purpose is to allow you to securely attach a Starlight Instruments 3.0" Feather Touch focuser to a United Optics 115mm or Orion EON 115mm telescope. It bridges the mechanical connection between the telescope tube and the upgraded focuser.
Which Starlight Instruments focusers is this 3.0" adapter compatible with?
This adapter is designed for Starlight Instruments focusers with a 3.0" body, such as the FTF30xx series. It provides the necessary threading to mount these larger, more robust focusers onto the specified telescopes.
Why should I upgrade the stock focuser on my Orion EON 115mm telescope?
Upgrading to a Feather Touch focuser using this adapter provides significant benefits for astrophotography. A Starlight Instruments focuser eliminates image shift, provides ultra-fine focus control, and can support heavy imaging trains (camera, filter wheel, off-axis guider) without flexure, leading to sharper stars across your images.
How will this adapter improve my deep-sky imaging with a heavy camera on a United Optics 115mm refractor?
When imaging an object like the Andromeda Galaxy (M31) with a heavy camera, the stock focuser can sag, causing tilted stars in the corners of your frame. This adapter creates a rigid, non-flexing connection for a Feather Touch focuser, ensuring your camera sensor remains perfectly perpendicular to the light path, even when the telescope is pointed near the zenith.
Is the installation of this 115mm telescope adapter difficult?
Installation is straightforward for users comfortable with basic telescope maintenance. It typically involves unthreading the stock focuser from the optical tube and threading this adapter in its place. The 3.0" Feather Touch focuser then attaches to the adapter. Always ensure the telescope is positioned securely and horizontally during the process.
Will this adapter work with any other telescopes besides the United Optics and Orion EON 115mm models?
No. This adapter is machined with a specific thread size and pitch to match only the United Optics 115mm and Orion EON 115mm refractors. Attempting to use it on other telescopes will likely result in damage to the threads on both the adapter and the optical tube.
