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Given the right techniques, urban astronomers can routinely observe deep-sky objects night after night – something most of us would never do if it involved driving miles into the country to find a dark site. Rod Mollise has observed the entire Messier list from his urban backyard, without high-tech equipment, using only commercially-made telescopes and simple accessories.This is a guide to good deep-sky astronomy under bad skies.There are literally hundreds of spectacular objects to be seen from the average urban site.