Background Photo: Anonymous, Separated from rest of ad on the inside cover of the August 1999 issue of "Astronomy" magazine. A Meade ETX-90EC Maksutov Cassegrain; Aperture = 90mm, focal length = 1250mm, and F: = 13.8, equipped with a series 4000 Super Plossl 26mm eyepiece! While it fails the test of a good telescope, re the degree of magnification obtained with a 5mm eyepiece,- it breaks the rule, as it is not marketed as a high power telescope. Not shown is its built in motor mount and "goto" electronics. The max. useful magnification is 180X, giving a 0.5mm exit pupil when a 6.9mm eyepiece is used.