Current Price: $32.45
Buy It Now Price: $32.45
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Astromania 1.25" / 2" Twist-Lock Adapter - Firmly and Gently Holds and centres Your eyepieces

  • 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.
  • Use Twist Lock adapter as a high-end reduction ring. It is gentle with the accessories and yet clamps them in place with incredible force.
  • This is a very high quality anodized aluminum adapter, self-centring 2" to 1.25" adapter with 2" thread.
  • Ideal for using high-power, low focal length 1.25" eyepieces in a big 2" telescope focuser.
  • An affordable way to increase the number of eyepieces to use with your 2" focuser-equipped telescope.

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.


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  • We ship within Three business days of payment, usually sooner.
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  • We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed.
  • Local pickups and combined shipping options are not provided at this time.


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Filed under: Eyepieces & Accessories