IRF90 Visual Adapter 2″

Name: IRF90 Visual Adapter 2″
Brand: Planewave
SKU: 600352
Price: 116.8 USD
Availability: InStock
Rating: 4.8 (5 reviews)

$116.8 ~~$160~~ In stock

Category: Observing Aids

Description

The IRF90 to 2" Visual Accessory Adapter allows you to attach a 2" mirror diagonal and eyepiece to your IRF90 rotating focuser. Used in conjunction with other PlaneWave adapters to space your eyepiece at the optimal position for your CDK model.

See adapter diagram (under Downloads tab on the Planewave website) for more information on the adapters needed for your CDK.

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

David O. ★★★★★ Oct 21, 2026

Finally, a solid way to use my 2" eyepieces with the IRF90 focuser—the threads cut cleanly and lock tight without any wobble. Paired with the right PlaneWave adapters, it’s a seamless setup for critical observing sessions.

James ★★★★★ Oct 20, 2026

The adapter threads on smoothly and feels solid—no wobble at all. It lets me use my 2" eyepieces with the rotating focuser exactly as needed. A straightforward upgrade that works perfectly.

Benjamin F. ★★★★★ Oct 19, 2026

Finally, I can use my 2" mirror diagonal with the IRF90 focuser without any wobble or slop. The aluminum threads engaged perfectly right out of the box. This adapter made the upgrade to larger eyepieces seamless.