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Message: <blockquote data-quote="jring" data-source="post: 3303687" data-attributes="member: 133897">Hi Ron,yes, the Baader Hyperion zoom is an Astro EP with one of the standard astro sizes - 1.25". These just slide into a receiver of the given diameter and are secured with a screw.The Kowa bodies have a proprietary bayonet mount plus some male and female threads around it for accessories. Either the bayonet mount or one of the threads can be used to fit an adapter to use other eyepieces - for example 1.25" astro ones.Here is a thread from some bf members who built their own adapters:<a href="http://www.birdforum.net/showthread.php?t=105037" target="_blank">http://www.birdforum.net/showthread.php?t=105037</a><a href="http://www.birdforum.net/showthread.php?t=290855" target="_blank">http://www.birdforum.net/showthread.php?t=290855</a>And I found one available commercially from a website in spain:<a href="http://www.digiscopingadapters.es/tienda/adaptador-ocular-astronomico-kowa-1-25/" target="_blank">http://www.digiscopingadapters.es/tienda/adaptador-ocular-astronomico-kowa-1-25/</a>But please note, that even with an adapter to mechanically fit an astro EP to your scope it does not mean that you will be able to get the combination to focus from a usable minimum range to infinity - so for experimenting either try to borrow the desired EP first or order from a store with a good return policy.Joachim</blockquote>