I don't know for sure but I'm pretty sure they are both made by Synta in China so even if they are not exactly the same they are sure going to be optically similar, which is a good thing. I've looked through a few Orion 100EDs and the optics are very good. Bob -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Wednesday, May 12, 2010 9:12 AM To: Utah Astronomy Subject: [Utah-astronomy] ED refractor question Does anyone know if the Orion 100mm ED (old style) and Celestron C100ED (now discontinued) are in fact the same model telescope? TIA _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com