Barlow Lens 2.5x 3-element 1.25"

Barlow work best with the superview and extraflat astronz eyepiece, we tried to paired it with standard ng eyepiece, for eye observation, it still consider good E.G: we can clearly see the ring of saturn and the gap to the sphere in a decent size with combination 10mm ng with 25mm extender tube and 2.5x 3 elements Astronz barlow.
Terrestrial seeing with the combination of the above Astronz eyepiece, extender tube and eyepiece can get close magnification and help reducing the achromatic effect of the original colour of the object quite noticeable given conditions during summer. Eg. Aiming to the top cone of 30 m tall kauri tree from 60 m distance, we can see the scale opening pretty obvious. (We did not use any filter). We are also found It does works well with the iphone pro series as we were taking life photos and video with the help of the mobile mount and managed to get the best shoot of the frame in a decent quality.

Bottom point: Astronz product added value to the scope as we can push the scope to its limit, which if we relying its original accessories, pretty much nearly impossible to achieved.