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Starlight Instruments 3.0" Adapter for William Optics FLT98 Telescopes
This Starlight Instruments 3.0" Adapter provides a dedicated, precision-machined mounting solution for attaching a 3.0" Feather Touch focuser to the specific William Optics FLT98 refractor model that features a white tube and gold stock tube adapter ring. It replaces the stock focuser mounting hardware, creating a solid, direct-threaded connection that eliminates flexure and ensures perfect alignment for demanding imaging applications.
A Custom 3.0" Interface for the William Optics FLT98
Upgrading to a Starlight Instruments Feather Touch focuser requires a robust mechanical link to your telescope tube. This adapter is not a universal part; it is engineered specifically for the thread pattern and dimensions of the William Optics FLT98 (white tube version with gold trim). This precise fit is critical for supporting the weight of a heavy imaging train without introducing tilt or sag, preserving the exceptional optical quality of your FLT98 refractor.
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Will this Starlight adapter fit any William Optics FLT98?
No. This adapter is specifically made for the William Optics FLT98 model that has a white optical tube and a gold stock tube adapter ring. William Optics has produced different versions of their telescopes over the years with varying mechanical specifications. You must verify your telescope version before purchasing to ensure compatibility.
Which Starlight Instruments focuser is this adapter for?
This adapter is designed to connect a Starlight Instruments 3.0" Feather Touch focuser to the specified William Optics FLT98 telescope. It will not work with 2.0", 2.5", or 3.5" Feather Touch models.
Why do I need a specific adapter for my FLT98 telescope?
Telescopes like the William Optics FLT98 use proprietary thread sizes on the rear of the optical tube. A custom adapter is required to create a rigid, perfectly centered, and tilt-free connection between the optical tube and a high-payload aftermarket focuser like the 3.0" Feather Touch. This is essential for astrophotography, where any mechanical flexure can ruin an exposure.
Is installing this FLT98 adapter difficult?
Installation is typically straightforward for users comfortable with basic telescope hardware. It involves carefully unthreading the stock focuser from the telescope's tube adapter ring and then threading this custom adapter in its place. The 3.0" Feather Touch focuser then attaches to this adapter. Always refer to the Starlight Instruments focuser manual for detailed installation instructions.
I have an FLT98 with a red tube. Can I use this adapter?
No, this adapter is confirmed only for the white tube version with the gold trim ring. Different color schemes or production runs of the FLT98 may have different mechanical threads or dimensions, meaning this adapter would not fit. You would need to contact Starlight Instruments or a dealer to find the correct adapter for a different FLT98 model.
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| Compatibility |
William Optics FLT98 Telescopes (White Tube with Gold Stock Tube Adapter Ring models only) |
| Focuser Interface |
Starlight Instruments 3.0" Feather Touch Focuser FTF3035B-A |
| Kind |
Scope-specific tube adapter |
| Telescope-side connection |
104.75x1 thread |
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3.0" Adapter for William Optics FLT98 Telescopes
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- Starlight Instruments 2-Year Warranty
