I WAS THRILLED WITH THIS EYEPIECE.
I PUT IT ON MY NEXSTAR 8 GPS AND WAS REALLY IMPRESSED. SOMETIMES WHEN I USE "GO TO" ON MY SCOPE, THE OBJECT IS OUTSIDE MY FIELD OF VIEW OF MY STANDARD 40 MM EYEPIECE. WITH THIS ONE, EVERY OBJECT WAS IN MY SIGHT. EVEN THOUGH THIS IS A HEAVY EYEPIECE, IT DID NOT AFFECT THE BALANCE OF MY SCOPE. I GREAT BARGAIN!!!
This is the 1st eyepiece you should buy if you own a 16" or larger truss tube dobsonian telescope. It is simply the best eyepiece one can buy for such an instrument.