Second Mark on the value of the 8-24mm zooms. The
Vixen/Celestron/older Televue ones don't have the click stop, but are
excellent in contrast and sharpness. Particularly useful for finding
the right mag for planetary observations given the seeing conditions. I
use mine all the time instead of my ortho, plossls, Konig, etc. for
planets. Narrow fov in the longer focal length, but quite serviceable
at the lower.

Larry Stedman
Vestal