IGES Filter and DXF filter locations misplaced by .7 mm, about 20-25% of thickness.
I remember using 4.0 for index of germanium before. It won't make any difference in this rendering, but is the index for ambient or cryogenic temperature?
P120FB00: With filter & beamsplitter added, EFL 120 mm. 4:1 views green part of target, moved to focal plane. Filter Housing appears to vignette the optical path near top (orange).