T-Thread To SCT Thread Adapter (19850)

Name: T-Thread To SCT Thread Adapter (19850)
Brand: Optec
SKU: 19850
Price: 28.8 USD
Availability: InStock
Rating: 4.8 (5 reviews)

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$28.8 ~~$45~~ In stock

Category: Astrophotography Accessories

Description

The #19850 T-to-SCT adapter allows equipment presenting an SCT-Thread to be attached to a T-Threaded telescope.

Specifications

Outside Diameter: 1.99" (50.7mm)
Overall Height: 0.4" (10.2mm)
Clear Aperture: 1.6" (41.3mm)
Weight: 0.64 oz (18.1 g)
Back-focus Usage: 0.4" (10.2mm)
Telescope Side Connection: Female T-Thread
Camera Side Connection:: 2" SCT Male Thread

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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)

Aurora ★★★★★ Oct 21, 2026

It threaded onto my SCT without any wobble, and the 10mm height is just enough to clear the focuser knobs. Solid machining for the price, though I wish it came with a set screw to lock it in place.

Scarlett I. ★★★★★ Oct 20, 2026

This little adapter fits perfectly between my SCT and T-thread gear, no wobble at all. The threads are clean and smooth, making setup quick even in the dark. Exactly what I needed to connect my camera properly.

Lucy ★★★★★ Oct 18, 2026

The threads on this adapter are machined cleanly, so my SCT equipment screws on smoothly without any wobble. At just 0.4 inches tall, it adds almost no extra length to the optical train. Perfect fit for connecting my camera directly to the telescope.