All About Telescopes - Information on refracting, reflecting and radio telescopes, details on amateur telescopes, eyepieces, mounts, lenses and software..
Amateur Telescope Optics - Presents information on aberrations, obstruction effects, and reflecting, refracting, and catadioptric objectives, and the eyepiece and eye..
AstroDesigns by Ed Stewart - Accessory designs and information to enhance the SSE of Meade LX200s, Dobsonian reflectors, and other telescopes plus star charts for computerized telescopes..
Choosing your Telescope's Magnification - Selection depends on eyesight, telescope's aperture and optical design, atmospheric conditions, and type and size of the object being viewed..
Collimating Newtonian Optics - Consists of two steps: aiming the eyepiece axis at the center of the primary, and aiming the primary at the center of the eyepiece..
Meade Advanced Products Users Group - The resource website for the LX200, LX90, LX50, LXD55, Starfinder, and ETX telescopes, and Pictor CCD cameras and imaging software..