OPTEC-4300 Extension Adapter, 12.5mm Length
Starting Price: $100.00
Price as Configured: $100.00
Price as Configured: $100.00
Brand: Optec / SKU: OP-19829
The OPTEC-4300 12.5mm Extension Ring provides approximately 1/2-inch of extension for any OPTEC-4300 telescope adapter. Ideal for telescopes where the Gemini Focusing Rotator may need to pushed out and away from the OTA to provide clearance for cooling fans or when a little extension is required to reach optimal focus.
Compatible with:
- Any OPTEC-4300 telescope adapter.
- Gemini Focusing Rotator.
- TCF-Lynx3 3-inch Focuser.
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| Inside Diameter: | 3.9" (99mm) |
| Outside Diameter: | 4.95" (126mm) |
| Overall Height: | 0.81" (20.6mm) |
| Clear Aperture: | 3.9" (99mm) |
| Weight: | 5.0 oz (145 g) |
| Back-Focus Usage: | 0.492" (12.5mm) |
