Cloud Break Optics

DSI 3.5x24tpi Male Thread To OPTEC-3600 Adapter (19802)

DSI 3.5x24tpi Male Thread To OPTEC-3600 Adapter (19802) - Main image
$70 $100 In stock

Category: Astrophotography Accessories

Description

How do you adapt to your telescope?

Over the years, Optec has developed dozens of adapters and custom fittings for various telescopes and mounts. Our most common telescope adapters are based upon a circular dovetail mount in three different sizes. 

  • OPTEC-2400 mount - our standard 2.4-inch diameter circular dovetail mount
    • Telescope Adapters for the TCF-S and IFW
    • The OPTEC-2400 circular dovetail mount is used for the TCF-S focuser and IFW filter wheel to allow easy connections from most any telescope. If your scope or accessory is not listed, do not hesitate to call.
  • OPTEC-3600 mount - our larger, 3.6-inch diameter circular dovetail mount
    • Telescope Adapters for the TCF-S and IFW
    • The OPTEC-2400 circular dovetail mount is used for the TCF-S focuser and IFW filter wheel to allow easy connections from most any telescope. If your scope or accessory is not listed, do not hesitate to call.
  • OPTEC-4300 mount - our newest, 4.3-inch diameter circular dovetail mount
    • Telescope Adapters for the Gemini Focusing Rotator
    • The OPTEC-4300 circular dovetail mount has been specially made to accommodate certain OEM low-profile versions of the TCF 3-inch series focuser bodies. These flush mount adapters allow the 3-inch drawtube of the TCF-S3 to pass inside the adapter for reduced overall length.  The new Gemini Focusing Rotator also uses this same dovetail standard for both telescope and camera side connections.

Generally, the OPTEC-2400 mount can be used to attach our 2-inch accessories such as the TCF-S and IFW. Likewise, the OPTEC-3600 mount can be used to attach our 3-inch accessories such as the TCF-S3 or Pyxis 3". The OPTEC-4300 mount is reserved for certain OEM TCF-S3 focusers and the Gemini Focusing Rotator.

  • Threaded Telescope Adapters
    • Responding to recent requests for threaded adapters and fittings, Optec has introduced a new line of adapters and extension tubes designed around the Astro-Physics 2.7-inch thread specification and the new, larger Deep Sky Instruments DSI 3.5 thread spec.
      • AP 2.7-inch Telescope Adapters and Extensions
      • DSI 3.5-inch Telescope Adapters and Extensions

OPTEC-3600 Dovetail Mount

Telescope Adapters for the TCF-S3", Pyxis 3" and IFW 3"

Optec 3.6" Dovetail Mount

The OPTEC-3600 circular dovetail mount is used for the large TCF-S3 focuser, Pyxis 3" rotator, the IFW-3" or the Perseus 4-port Instrument Selector. These mounts allow easy connections from most any telescope. One side has a telescope-specific thread or dovetail and the other side presents the 3.6-inch diameter Optec dovetail mount. If your scope or accessory is not listed, do not hesitate to call. We are constantly adding new adapters to our catalog.

#19802 - DSI 3.5x24tpi Male Thread To OPTEC-3600 Adapter

DSI 3.5x24tpi Mount
The #19802 DSI mount allows Optec equipment with an OPTEC-3600 receiver such as the TCF-S3 and IFW-3 to be connected to equipment that presents a DSI 3.5-inch thread connection.

Specifications

  • Outside Diameter:  3.95" (100.3mm)
  • Overall Height: 0.71" (18.0mm)
  • Clear Aperture:  3.25"  (82.6mm)
  • Weight: 2.0 oz (55 g)
  • Back-focus Usage: 0.1" (2.5mm)
  • Telescope Side Connection: 3.5x24tpi Male Thread
  • Camera Side Connection:  OPTEC-3600 Male Dovetail
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          Customer Reviews (5.0 / 5 · 5 reviews)

          Jacob ★★★★★

          The threads on this adapter are cut perfectly smooth - it screwed onto my focuser without any binding or cross-threading. Took less than a minute to get a rock-solid connection to my scope. Exactly what I needed for this setup.

          George ★★★★★

          This adapter threaded onto my OPTEC-3600 perfectly with no wobble, which was a relief after struggling with generic parts. The brass construction feels solid and should hold collimation better than my last aluminum adapter.

          Andrew ★★★★★

          I was worried about fitment on my OPTEC-3600 focuser, but this adapter threaded on smoothly with no wobble at all. The 24tpi male threads are precisely cut, and it holds my camera securely even at a steep angle.