146 
The projector has "RUSSAR—84—300"objectives 
which are designed specially for this device and have 
small distortion. 
Also the image holders can move in a position 
suitable for mounting spectral positives, image 
holding carriages can move in the positives 
plane,along optical axis of objectives and rotate 
round them. 
Four objectives can move in focusing, light 
filters can be changed and also the light flux can be 
covered by a mechanical shield. 
The command system of the device provides for 
th e selection of illuminating and projecting 
channels, automatic preservation of the images 
sharpness if its scale changes on a translucent 
table, automatic change of light filters, 
displacement and rotation of image holders, 
photorecording both on cuted and roll materials. 
The compositing device PC—4 ( picture 2) is 
designed for compositing colour images by parts with 
simultaneous 5—times enlargement by initial spectral 
large—format positives. The device can be used both 
for mass production of colour composite images and 
for individual interpretat ion and photorecording of 
separate images. 
Picture 2. Compositing device PC—4.