T2 Ring (11mm)

Name: T2 Ring (11mm)
Brand: ZWO
SKU: ZWO-T2-T2-11
Price: 12.96 USD
Availability: InStock
Rating: 5.0 (5 reviews)

$12.96 ~~$18~~ In stock

Category: Astrophotography Accessories

Description

This is a T2 ring that provides 11mm of spacing to help reach correct back distance with corrective optics. This has M42 thread x 0.75" depth. Specifically for use with the ASI 1600 series cameras.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

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

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

View policy

If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy

Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy

Returning an item

Check the return conditions before sending anything back.

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

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Abigail ★★★★★ Oct 21, 2026

The M42 threads threaded on smoothly to my filter drawer without any wobble. It’s a simple aluminum ring, but the precise 11mm spacing let me dial in the back focus on my rig in minutes.

Andrew R. ★★★★★ Oct 20, 2026

Exactly the 11mm spacing I needed for my ASI1600 setup, threading on both sides is clean and it screws on without any binding. Cured my back focus issue on the first try.

Ella ★★★★★ Oct 19, 2026

The threading is precise and smooth—no wobble when attaching my camera. The 11mm spacing got my back focus dialed in perfectly on the first try, which never happens for me.