What is a Nagler eyepiece?
What is a Nagler eyepiece? In the early 1980's, Al Nagler created a small sensation when these eyepieces were introduced. His goal was to create a "spacewalk" feeling when looking through these eyepieces. This is accomplished by sticking a barlow-like lens group inside the barrel of a long focal length eyepiece. What eyepiece is best for moon? For a medium power eyepiece (approximately 150X) a 13mm or 14mm eyepiece would do. For a low power eyepiece (about 75X), which are great for finding and centering or observing very large and close objects like the Moon or Sun, an eyepiece between...