Tuatara: Volume 30, Issue 1, December 1988
Fig. 1.(from Lindstrom and Meyer-Rochow 1987) Filter characteristics as supplied by the manufacturer: the solid line and the top abscissa refer to Kodak Wratten filter 87 while the broken line and bottom abscissa describe the transmittance of the O'Hara RT-2 filter used in the “Find-R-Scope” infra-red viewer/emitter
Fig. 1.(from Lindstrom and Meyer-Rochow 1987) Filter characteristics as supplied by the manufacturer: the solid line and the top abscissa refer to Kodak Wratten filter 87 while the broken line and bottom abscissa describe the transmittance of the O'Hara RT-2 filter used in the “Find-R-Scope” infra-red viewer/emitter.