Cloud Break Optics

OPTEC-4300 to Female Optec/DSI 3.5"Adapter (19830)

OPTEC-4300 to Female Optec/DSI 3.5"Adapter (19830) - Main image
$91.8 $135 In stock

Category: Astrophotography Accessories

Description

The #19830 OPTEC-4300 to female Optec/DSI 3.5" threaded receiver allows any combination of our DSI 3.5-inch spacers to be easily installed on the camera side of the Gemini Focusing Rotator.

Specifications

Inside Diameter: 3.5" DSI Thread
Outside Diameter: 4.95" (125.7mm)

Overall Height:

0.42" (10.7mm)
Clear Aperture: 3.46" (88mm)
Weight: 3.8 oz (110 g)
Back-Focus Usage: 0.1" (2.5mm)

The #19830 OPTEC-4300 to Optec/DSI 3.5" adapter converts the camera side receiver of the Gemini Focusing Rotator to a 3.5" x 24tpi receiver for the Optec/DSI 3.5" spacers.  

Compatibility

  • Optec/DSI 3.5" Threaded Spacers.
  • Gemini Focusing Rotator (included with standard package).
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Customer Reviews (4.8 / 5 · 5 reviews)

Christopher Y. ★★★★★

This adapter threaded onto my Gemini rotator perfectly, no wobble or fuss. Now I can swap in different 3.5-inch spacers without hunting for separate threads. Really solid machining for the price.

Owen H. ★★★★★

Finally a clean way to attach all my 3.5-inch spacers to the camera side without any thread mismatch. The adapter threads on smoothly and holds everything securely, exactly what I needed for my imaging train.

Daniel P. ★★★★★

Was a bit worried about thread compatibility but this adapter screwed on perfectly to my Gemini rotator. The aluminum threading feels solid and precise, no wobble at all when attaching the DSI spacers.