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Hi hbrow05,
This Celestron eyepiece has a 23 mm focal length giving you a slightly lower power view than your 20mm eyepiece. I am guessing your eyepieces are plossls?
However the real benefit of this eyepiece is the Ultra Wide Angle (UWA) 82 degrees field of view. This gives you a feeling of "space walking", or as I like to say "falling into the telescope" as the 82 degrees is so wide that you are immersed in stars.
Cheers
James
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