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I'm new to astronomy. I bought this Barlow to give me more versatility with the three eyepieces I have. learning to use my Celestron Edge8 HD, which I also bought from OPT.
worked as I had hoped with 11mm Nagler6 on 12” Sky-Watcher dobsonian to keep a crisp, enlarged image in the eyepiece. OPT website provided selection and detailed descriptions and smooth purchase and shipping process. Arrived well packed.
I gave me what I wanted. So I’m very happy...
I have celestron nexstar evolution 8" got the 2x Tele-Vue barlow I've now doubles my EP artillery.