Orion Shorty Plus APO barlow, now discontinued (Made in Japan, not to be confused with the Made in China version).
Excellent condition, comes with end caps and original box.
They are the same as the Celestron Ultima barlows (3 elements). Read reviews here
http://www.telescope.com/Orion-Short...ens/p/5121.uts
I would have kept is but I already have an Ultima.
Judging by recent sales, I will let it go for $100 posted.
PM me with queries.
Thanks
Bo
