TelescopeBinoculars.org

When buying a telescope, use the focal length and focal ratio to determine the magnification of a telescope. Choose a focal ratio for a telescopes based on the tips in this free video on home astronomy from www.BuyTelescopes.com

Saturday night Campfire vlog

The awkward truth about the effectiveness of setting circles fitted to small telescopes. Erratum: The scale of the AA road map referred to is in fact 1:500000 and not 1:500. So what’s another 499500 between friends? RJD Presented by Robert J Dalby Produced by ARB Media Productions for The Astronomy and Nature Centre