Features:
1. Fits 2" telescope focalizer and accepts 2" eyepieces or accessories. Threaded for use with standard 2-inch astrophotography filters.
2. Has two locking wing screws to secure any inserted astronomical fittings, with brass compression inserts to prevent damage to your telescope fittings.
3. Extension tubes provide an additional "backhaul" of the focalizer, which is typically required for short-range ground-based observations through telescopes, or for astrophotography applications.
4. With this simple and practical device, you can extend the focal length of your telescope by 35mm or a little more.
Parameter:
Product name:2" Telescope Eyepiece Extension Tube Adapter
Optical Length:35mm 50mm 80mm
Fits in: 2" telescope focusers
Connection (to the Telescope):2"
Ring Clamp:yes
Colour:black
MMaterial:aluminium
Type:adapter
Type of Build:Extension tube
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Origin : Mainland China
Certification : None
Name : 2-Inch Telescope Eyepiece Extension Tube Adapter
Material : Metal
Optical Length : 35mm/50mm/80mm