| http://www.w3.org/ns/prov#value | - Suitable for use with mid aperture refracting (4 to 6 inch / 10cm to 15cm), Catadioptric (8 to 10 inch / 20cm to 25cm), or moderate size Newtonian (8 to 10 inch / 20cm to 25cm) telescopes including several of those made by Orion, Celestron, Meade, TeleVue which are offered by Company Seven.
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