Webum > Science > Astronomy > Amateur > Telescope Owner Resources > Chats and Forums Meade 4504 Telescopes Group Web Page Shares information, tips, and resources for owners and users of Meade 4504 (4.5" reflector) telescopes. Yahoo! Groups : MakScopes An online email group for all owners of Maksutov telescopes (like the Meade EXT-90 and the newer Russian telescopes). Yahoo! Groups : Portaball Yahoo mail group for owners of the Mag 1 Instruments PortaBall telescope. Help build the biggest human edited directory on the internet Add your website - Open Directory Project - Become an editor