Meade 90mm (3.5") ETX Maksutov-Cassegrain

Specifications and Features of the 90mm Meade ETX Optical Design: Maksutov-Cassegrain Aperture: 90mm (3.5") Focal Length: 1250mm Focal Ratio: f/13.8 Resolving Power (arc secs.): 1.3 Optical Coatings: MgF2; standard aluminum/SiO Limiting Visual Magnitude: 11.7 Maximum Practical Visual Power: 325X Secondary Mirror Obstruction (dia.; %): 1.1" (27.9mm); 9.6% Telescope Mounting: fork type; double tine Primary Mirror Correcting Lens: Pyrex ® glass, BK7 optical glass, Grade-A Finder Scope: 8 x 20mm right-angle viewfinder Tripod: Deluxe field tripod Total Net Telescope Weight: 19 lbs.

The 90mm Meade ETX is a wonderful little telescope that I use for eclipses and spur of the moment observing sessions in my backyard. It has an electric motor drive for tracking objects that really comes in handy and it's easy to set up and operate. I have the older version of this scope that doesn't have the goto function or object database but that's ok because the hunt is half the fun.