#19839 - OPTEC-4300 Extension Adapter, 25mm length.
The OPTEC-4300 25mm Extension Ring provides approximately 1-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.
- Any OPTEC-4300 telescope adapter.
- Gemini Focusing Rotator.
- TCF-Lynx3 3-inch Focuser.
- Inside Diameter: 3.9" (99mm)
- Outside Diameter: 4.95" (126mm)
- Overall Height: 1.30" (33.2mm)
- Clear Aperture: 3.9" (99mm)
- Weight: 8.8 oz (250 g)
- Back-Focus Usage: 0.984" (25mm)
-
Shipping Details
- Variant: Default Title
- SKU: 19839
- Weight: 0.63 lb
- Package Dimensions :
- Harmonized Code: 9005.80
- Product Type: Adapter
- Brand: Optec, Inc.