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William Optics Flat4 Draw Tube Adapter for GT102, FLT 132 - Blue for 3" V-power Focuser
This William Optics adapter provides the essential threaded connection between a Flat4 field flattener and the 3" V-Power focuser drawtube. It is specifically engineered for the 2017 models of the William Optics Gran Turismo 102 and FLT 132 refractors, ensuring a perfect mechanical and cosmetic match.
Direct-Thread Connection for the 3" V-Power Focuser
For astrophotography, a rigid imaging train is critical to prevent tilt and flexure. This adapter replaces standard compression fittings, creating a solid, direct-thread attachment from your Flat4 flattener to the telescope's 3" V-Power focuser. This secure link is the foundation for achieving sharp, round stars across your entire image frame.
Anodized Blue Finish for 2017 GT102 & FLT 132 Models
Designed as an original equipment manufacturer (OEM) component, this adapter is purpose-built for specific William Optics telescopes. The anodized blue finish is formulated to exactly match the livery of the 2017 versions of the GT102 and FLT 132 refractors. If you own one of these models, this is the correct adapter to integrate your Flat4 flattener seamlessly.
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Will the Flat4 adapter fit my William Optics GT102 from 2018?
No, this specific adapter (WO-AD4-A006-L00BU03) is designed for the 2017 models of the GT102 and FLT 132 with the 3" V-Power focuser. Later models may use a different thread pitch or focuser design, requiring a different adapter.
Which focuser is this William Optics adapter compatible with?
This adapter is made exclusively for the William Optics 3" V-Power focuser that was supplied with the 2017 GT102 and FLT 132 telescopes.
What field flattener does the WO-AD4-A006-L00BU03 connect to?
This is a draw tube adapter designed to connect a William Optics Flat4 series field flattener or flattener/reducer to the telescope's focuser.
Why do I need this adapter to image with my FLT 132?
To ensure a rigid, flex-free imaging train. Using this threaded adapter eliminates the potential for sag or tilt that can occur with slip-fit or compression ring-style adapters, which is critical for maintaining a flat field and sharp focus during long exposures.
Is this Flat4 adapter compatible with a William Optics GT81?
No, this adapter is not compatible with the GT81. It is designed only for the William Optics GT102 and FLT 132 (2017 models). The GT81 requires a different adapter due to its different focuser and optical design.
Is the color of this adapter a match for current William Optics telescopes?
This adapter features an anodized blue finish intended to match the specific color scheme of the 2017 model year telescopes. It may not be a perfect cosmetic match for newer or older models with different colorways (e.g., red, gold, or space gray).
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| Compatibility |
William Optics GT102 & FLT 132 (2017 Models) |
| Focuser Compatibility |
3" V-Power Focuser |
| Flattener Compatibility |
William Optics Flat4 Series |
| Color |
Blue |
| Part Number |
WO-AD4-A006-L00BU03 |
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William Optics 2-Year Warranty
