Takahashi FSQ85 2" Visual Adapter

Product Overview

This is Takahashi's FSQ85 2" Visual Adapter, part TKT37110 — a 2-inch ocular adapter built for use within the Extender-QE 1.6x 2" field flattener system on the FSQ-106EDX. Takahashi's own listing describes it as the ocular adapter for that system, not as a direct focuser-drawtube fitting.

It's easy to confuse with the 2" Adapter for FSQ85-ED (TKP27110S) sold alongside it, but the two serve different points in the train: that one slides directly into the bare focuser drawtube, while this one is the visual-side adapter for the Extender-QE system.

Who It's For

This is a good match if you're running the Extender-QE 1.6x 2" field flattener on an FSQ-106EDX and need the matching 2-inch ocular adapter for visual use through that system.

If you're using the FSQ-85EDX or FSQ-106EDX4 directly, without the Extender-QE, the separate 2" Adapter for FSQ85-ED (TKP27110S) is the part you want instead.

Key Features & Design

• 2-inch (50.8 mm) tube: accepts standard 2-inch eyepieces and diagonals.
• Built for the Extender-QE 2 system: Takahashi pairs it specifically with the FSQ-106EDX field-flattener setup.
• Purely mechanical: no optical element of its own.

Recommended Uses

• Visual observing through the Extender-QE system on an FSQ-106EDX.
• Fitting a 2-inch diagonal or eyepiece where the Extender-QE's own visual path is being used.

Compatibility and Accessory Notes

• Built for the Extender-QE 1.6x 2" field flattener on the FSQ-106EDX. It isn't the same fitting used on a bare FSQ-85EDX or FSQ-106EDX4 focuser — see the separate 2" Adapter for FSQ85-ED for that use.
• Purely mechanical — no correction, no change to focal length or focal ratio.

Good to Know Before You Order

• It isn't interchangeable with the 2" Adapter for FSQ85-ED (TKP27110S). Both are 2-inch, 50.8 mm adapters at a similar price, but they fit different points in the train — tell us whether you're running the Extender-QE and we'll confirm which one you need.

Frequently Asked Questions

Is it difficult to set up?

No — it fits into the Extender-QE's visual section the same way any 2-inch adapter installs, with nothing to align.

Is this the same as the 2" Adapter for FSQ85-ED?

No. That part fits the bare FSQ-85EDX or FSQ-106EDX4 focuser drawtube directly. This one is built for the Extender-QE 1.6x 2" field flattener system.

Does it include any optics?

No, it's a mechanical adapter only.

Bottom Line

In short: Takahashi's 2-inch ocular adapter for the Extender-QE 1.6x 2" field flattener system on the FSQ-106EDX — a different part from the FSQ85-ED focuser adapter it's often confused with, built for a different point in the train.