Alpine Astronomical Baader OPFA Eyepiece Projection Adapter

BH #ALOPFA • MFR #OPFA
Alpine Astronomical
Alpine Astronomical Baader OPFA Eyepiece Projection Adapter
Key Features
  • For Imaging with DSLRs through Eyepieces
  • Holder Slides over Eyepiece
  • Tubes Provide Back-Focus Distance
The base platform for their "Ocular Projection and Focal Adapter" system, the Baader OPFA Eyepiece Projection Adapter from Alpine Astronomical has standard male T-2 threads on the end so it is compatible with their entire T-2 Astro modular accessory line of products—allowing you to easily adapt DSLR bodies or body/lens combinations for projection astrophotography and digiscoping. The adapter consists of the #24 focuser/eyepiece holder and two #25B 40mm extension tubes from their T-2 Astro modular accessory system.
Special Order
Expected availability: 2-4 weeks
$66.00
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Alpine Astronomical OPFA Overview

The base platform for their "Ocular Projection and Focal Adapter" system, the Baader OPFA Eyepiece Projection Adapter from Alpine Astronomical has standard male T-2 threads on the end so it is compatible with their entire T-2 Astro modular accessory line of products—allowing you to easily adapt DSLR bodies or body/lens combinations for projection astrophotography and digiscoping. The adapter consists of the #24 focuser/eyepiece holder and two #25B 40mm extension tubes from their T-2 Astro modular accessory system.

Alpine Astronomical Baader Sliding T-2 Focuser

An optional part of the modular Astro T-2 system, the Alpine Astronomical Baader Sliding T-2 Focuser is ideal for use with 1.25" eyepieces and off-axis guiders and provides up to 10mm of additional focus travel with locking thumbscrews to set the perfect focus position. It is placed between eyepieces, diagonals, bino-viewers, or other accessories and the telescope focuser drawtube or visual back to provide additional focusing room for sharper images. As with all of the Astro T-2 family of accessories, the focuser has male T-2 threads on one side and female T-2 threads and an eyepiece insertion sleeve on the other for complete compatibility.

Alpine Astronomical Baader T-2 40mm Extension Tube

An optional part of their modular Astro T-2 system, the Alpine Astronomical Baader T-2 40mm Extension Tube can be used throughout the system to add the proper spacing between different components. The extension has internal T-2 threads on one end with external T-2 threads on the other for easy use. You can use the extension tubes anywhere you need to precisely space and couple any of the T-2 components, in configurations of your own design.

Example of Uses

  • Stack this 40mm tube with another of the same size or the two other sizes—15mm and 7.5mm—for precise spacing
  • Use with the Alpine telecompressor to vary the spacing of the lens relative to a camera or eyepiece for precise placement
  • Provide a secure way of varying an eyepiece-to-camera separation (projection ratio)
  • Use with the afocal and ocular projection (OPFA) system
  • Use with the Multi-Purpose Coma Corrector to accurately locate and couple the coma corrector to eyepieces

Alpine Astronomical Baader Sliding T-2 Focuser Specs

Packaging Info
Package Weight0.17 lb
Box Dimensions (LxWxH)2.65 x 2.3 x 1.55"

Alpine Astronomical Baader T-2 40mm Extension Tube Specs

Packaging Info
Package Weight0.13 lb
Box Dimensions (LxWxH)2.35 x 2.1 x 1.95"
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