Alstar 1.25" / 2" Twist-Lock Adapter - Bundle with - Astronomical 2"/M48-extension Tube Kit

You know the situation - you've clamped your precious eyepiece using the locking screw on the focuser. But instead of sitting precisely in place, it is tilted or even worse - the screw marks and damages the barrel. But this doesn't need to happen, there is a solution: the Twist-Lock adapter. Put your 1.25" eyepieces or other accessories one: Turn the lock-ring and your eyepiece now sits firmly anchored in place. Your eyepiece no longer needs its safety groove as the adapter now clamps it over a large area of around 15mm. You can also use the 2 "to 1.25" adapter as a permanent 2" barrel for example. Suppose you are observing with some 2" eyepieces but also have a favourite 1.25" eyepiece you want to use. Instead of constantly having to fiddle around with adapters, you could simply use this adapter together with the eyepiece and use it with a fixed 2" barrel.Save money when buying filters - A 2" filter thread offers the option of using a 2" screwed filter, even when using a 1.25" eyepiece.

• An affordable way to increase the number of eyepieces to use with your 2 inch focuser equipped telescope
• Ideal for using high power; low focal length 1.25 inch eyepieces in a big 2 inch telescope focuser
• This is a very good quality anodized aluminum adapter; self centring 2 inch to 1.25 inch adapter with 2 inch thread
• Eliminate Focusing Problem: The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread; elegantly solves the spacing problems in astrophotography and eliminates a series of focusing problems
• Variable Combination: The required spacing can be achieved by combining several extenders of differing lengths; Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners