Bresser Spezial Special Astro 20x80 Porro Prism Binoculars20x80s are the perfect compromise between portability, light gathering power and magnification, so have long been the "go to" choice for amateur astronomers. These Bresser Spezial Special Astro 20x80 Porro Prism Binoculars are light enough to be hand held for brief periods, but really come in their own when tripod mounted. They have a central adjustable balance bar which helps to keep the binoculars perfectly in altitude balance and this has a