Coronado 60 mm Double Stack Adapter Ring - AP186

Name: Coronado 60 mm Double Stack Adapter Ring - AP186
Brand: Coronado
SKU: CORO-AP186
Price: 19.7 USD
Availability: InStock
Rating: 4.8 (5 reviews)

Coronado 60 mm Double Stack Adapter Ring - AP186 - Main image

$19.7 ~~$26.99~~ In stock

Category: Telescope Accessories

Coronado 60 mm Double Stack Adapter Ring

The 60 mm Double Stack Adapter Ring is designed by Coronado and essential to double stack on an external primary Etalon for SM60.

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Customer Reviews (4.8 / 5 · 5 reviews)

Abigail ★★★★★ Oct 22, 2026

Finally got around to stacking my SM60 and this ring made the whole setup click into place effortlessly. The threads are machined cleanly, so the etalon seated perfectly without any wobble or tilt. Took about two minutes to swap from single to double stack and the sun looked incredible.

Thomas E. ★★★★★ Oct 21, 2026

The threads on this adapter ring are precise and smooth—it screwed right onto my OTA without any fuss. It's solidly machined and holds the etalon perfectly centered, exactly what you need for critical solar observing.

Daniel B. ★★★★★ Oct 20, 2026

Finally got my double stack dialed in and this ring is the missing link. The threads are machined perfectly so the etalon screws on tight with zero play, and I can swap it between scopes in under a minute.