Telescopes for Adults Astronomy, 70mm Aperture and 700mm Focal Length Professional Refractor Telescope for Kids and Beginners with Phone Adapter, AZ Mount and Tripod to Viewing Planets and Stars - Walmart.com
National Geographic SKY VIEW 70 - 70mm Refractor Telescope with Panhan — Explore Scientific
Triplet refractor collimation and lens centering - ATM, Optics and DIY Forum - Cloudy Nights