OPTEC-3600 to OPTEC-4300 Expansion Ring

$55.00

Quantity

#17870 - OPTEC-3600 to OPTEC-4300 Expansion Ring

The 3600 to 4300 Expansion Ring allows owners of any OPTEC-3600 telescope adapter to easily expand the male dovetail out to 4.3-inches matching the OPTEC-4300 spec.  

Inside Diameter: 3.6" (91mm)
Outside Diameter: 4.95" (126mm)

Overall Height:

0.42" (10.7mm)
Clear Aperture: 3.6" (91mm)
Weight: 3.4 oz (100 g)
Back-Focus Usage: 0.1" (2.5mm)

  • Any OPTEC-3600 telescope adapter.
  • Gemini Focusing Rotator.
  • TCF-Lynx 3 3-inch Focuser.

    The 3600 to 4300 Expansion Ring allows owners of any OPTEC-3600 telescope adapter to easily expand the male dovetail out to 4.3-inches matching the OPTEC-4300 spec.  

  • Package Details