These were taken with eyepiece optics from Siebert Optics. The 40mm Observatory eyepiece lenses were ordered ummounted and a custom adapter was made that attaches to the exterior lugs of the D-7 lens. The 6 element Erfle type eyepiece has greatly improved flatness of field and sharpness. There is only slight vignetting with the top element very close mounted to the D-7 lens. See my "tinkering" gallery for a description of the adapter. The Fixer series was shot with the Spencer microscope with homemade polarazing attachments.