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

$65.00

Quantity
In Stock: 20

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.

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