CEM40G (integrated iGuider)The GEM45G and CEM40G are upgraded versions of the standard GEM45 and CEM40 that include a new Dual Saddle with integrated iGuider guide scope. The iGuider is a 30mm f 4 lens with a 1 4" CCD with 3. 75 um pixels and a built in windows driver compatible with PHD auto guide software. The CEM40G also uses the wider diameter counterweight bar common to the GEM45 and CEM70. Features Unique design, Center Balanced equatorial mount (CEM) for maximum payload