Today I’m going to talk to you about reflecting telescopes, or telescopes that use a mirror to focus incoming light rather than a series of lenses, such as the refracting telescopes that we’ve already looked at. The reason for this is that I’m going to be showing you some of the great telescopes of our time in later articles, and the bulk of them are the reflector type. If I give you the basic background on those instruments now, then I won’t have to natter on and on in each article, explaining things over and over again, and forcing you to read, heaven forbid. It will also cut down on the amount of writing I’ll have to do, and that way we’ll all be happy. I will anyway, and that’s the important thing.