Telescopes and Equipment How does one determine magnification? I have an Edmund Scientific Astroscan, 4-1/8-inch aperture, F/4.2 reflecting telescope, used with a 2.5x Barlow lens and a 28mm Plossl eyepiece.
Telescopes and Equipment I am struggling to find a system for telescopic observations of the planets and their major moons worthy of photographing. One wrinkle: I am in a wheelchair and almost blind.
Telescopes and Equipment When amateur astronomers grow old and wish to donate their telescope and observatory to their local club, who assesses the value?
