Well known and highly regarded planetary eyepiece made by Thomas Back TMB in Germany. This 4mm is from the later "Supermonocentric" series (which superceded the original "Supermono" production run. These eyepieces are no longer in production and consequently can only be obtained on the second hand market.
This one is in MINT condition and comes with box. Only selling because it is now surplus to my needs.
SOLD
Last edited by pgc hunter; 24-05-2011 at 08:47 PM.
