Sky watcher explorer 190mn 190mm 75 f1000 ds pro maksutov newtonian reflector optical tube assembly the exciting new maksutov newtonian from sky watcher is just what astrophotographers and serious visual observers have been looking for the maksutov newtonian design combines the best features from the newtonian reflector and the maksutov cassegrain to create a telescope design that provides truly stunning image quality providing high contrast perfectly flat images free from false colou