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Baader Planetarium Expanding Ring T-2i/2


Price: $29.00


  • Manufacturer: Baader Planetarium
  • UPC: T228A
  • MPN: T2-28A
  • SKU: T2-28A
  • Availability: In Stock

For use with all of the Baader Astro T-2 components, the T2-28a Expanding Ring is used to convert the 2" threading of the T2-17 holder into internal T-2 threads.  You may find additional uses in other  T-2 system assemblies of your own making. 

New Version, 1mm Optical Path Length






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