Cloud Break Optics

Optec-DSI 3.5x24tpi to STL 2.156x24tpi (19914)

Optec-DSI 3.5x24tpi to STL 2.156x24tpi (19914) - Main image
$63.65 $95 In stock

Category: Astrophotography Accessories

Description

Optec-DSI 3.5x24tpi male thread adapter to STL 2.156x24tpi thread.

Specifications

  • Outside Diameter:  3.82" (97.0mm)
  • Overall Height: 0.70" (17.8mm)
  • Clear Aperture: 1.88"  (47.8mm)
  • Back-focus Usage: 0.15" (3.8mm)
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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)

Ella S. ★★★★★

The 0.70-inch overall height gave me just enough clearance in my imaging train, and the clear aperture at 47.8mm doesn't vignette with my sensor.

Daniel Y. ★★★★★

I was worried about back focus issues, but the 17.8mm height on this adapter let me reach focus perfectly with my setup. The clear aperture of 47.8mm also didn't vignette my full-frame sensor at all.

Ella H. ★★★★★

Finally got my camera train aligned perfectly with this adapter—the 1.88" clear aperture is generous enough to avoid any vignetting on my full-frame sensor. Machining is precise, threads caught cleanly with no wobble.

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