Optec
12.5mm OPTEC-4300 Extension (19829)
- Regular price
- $ 100.00
- Sale price
- $ 100.00
- Unit price
- per
This item is out of stock but you can place an order now and we’ll ship when it becomes available.
In StockDescription
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.
Specifications
| 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) |
The OPTEC-4300 12.5mm Extension Ring provides approximately 1/2-inch of extension for any OPTEC-4300 telescope adapter.
Compatibility
- Any OPTEC-4300 telescope adapter.
- Gemini Focusing Rotator.
- TCF-Lynx3 3-inch Focuser.
The OPTEC-4300 12.5mm Extension Ring provides approximately 1/2-inch of extension for any OPTEC-4300 telescope adapter.
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