What is the purpose of this Starlight Instruments 3.0" adapter?
This adapter is designed to allow you to upgrade the stock focuser on your William Optics FLT110 (with TEC F6.5 lens) to a high-precision Starlight Instruments 3.0" Feather Touch focuser. It provides the correct threads and spacing for a secure, rigid installation.
Which focusers are compatible with this FLT110 adapter?
This adapter is compatible with the Starlight Instruments family of 3.0" focusers, such as the FTF3015B-A, FTF3025B-A, and other models in the FTF30xx series. It ensures a direct fit to the telescope's optical tube.
Is this adapter required to use a Feather Touch focuser on my William Optics FLT110?
Yes. To ensure proper optical alignment and a secure mechanical connection without flexure, this custom-machined adapter is necessary. It bridges the specific thread pattern of the FLT110 optical tube to the standard mounting pattern of the 3.0" Feather Touch focuser.
How do I install this adapter on my William Optics FLT110 telescope?
Installation typically involves unthreading the stock focuser assembly from the rear of the optical tube. This adapter then threads directly onto the telescope tube, after which the 3.0" Feather Touch focuser is attached to the adapter. This creates a single, rigid imaging column.
Will this adapter introduce any vignetting with a full-frame camera on my FLT110?
No, this adapter is designed to maintain the full 3.0" clear aperture of the focuser it connects to. It will not act as a bottleneck or introduce any additional vignetting into the optical path, preserving the telescope's illuminated field.
What material is the Starlight Instruments 3.0" adapter made from?
Starlight Instruments machines its adapters from high-grade, anodized aluminum. This provides a strong, lightweight, and corrosion-resistant component that will hold heavy camera loads securely without shifting.