Posts Tagged Aperture

• The Dobsonian Telescope: A Practical Manual for Building Large Aperture Telescopes - September 12th, 2010
• Celestron NexStar SLT Reflector Telescope – 90mm Aperture - July 12th, 2010
• Celestron AstroMaster Series Telescopes w/ Altazimuth Mount – 70mm Aperture - May 22nd, 2010