Male thread - M48X0.75; Female thread - M48X0.75; eliminates a range of focusing problems
The extension tube has a M48X0.75 interior thread and a M48X0.75 exterior thread for elegantly solving spacing problems in astrophotography
Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
This is a very high quality anodized aluminum adapter; self-centring 2" to 1.25" adapter with 2" thread
Allows you to use 1.25" eyepieces in any 2" telescopes focuser; star diagonal; or holder.One twist; and your accessories sit firmly in place; gentle clamping over a large area