Matsumoto Erect Image Mirror Diagonal
This is a unique mirror diagonal which
utilizes two mirrors to create a
non-inverted image at the output.
120mm of backfocus is required. The
diagonal interfaces with a 2" sleeve
on the telescope end,
and 1-1/4" eyepieces on the back end.
48mm filters are accomodated under the
black eyepiece holder section of the
diagonal, and a 36.4mm thread allows
an accessory such as a Borg mini
helical focuser to be added at the