Are explore scientific telescopes any good?
Are explore scientific telescopes any good? Generally we were very impressed by this instrument, although it's let down slightly by the focuser and the supplied 25mm eyepiece, which was fairly average. However, it has great light grasp, excellent optics for the money and is capable of delivering some stunning results. What does APO mean in telescopes? An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses. What is triplet APO? Apochromatic (APO) lenses are designed to bring three wavelengths of light (red,...