Historical information
This collection of 17 photographs of Air Survey Squadron aerotriangulation equipment and personnel was taken at the Army Survey Regiment, Fortuna, Bendigo, circa 1989. The PDP 11/70 minicomputer was the operating system introduced in 1977 as the mainframe system for the control of the APC4, aerial triangulation block adjustments, SORA OP Analytical Orthophoto control, APR Analytical Terrain Profile Recorder computation, graphics, and general computing. The OMI/Nistri AP/C-3 analytical plotter shown in photo .1P to .6P and .9P was introduced in 1972–1973. The Zeiss (Jena) Stecometer analytic stereocomparator for air photography shown in photo .16P was introduced at Air Survey Squadron in 1963. Aerotriangulation production was expedited using computers for analytical photogrammetric processes. The technician accurately measured between pass, tie, and survey control points on aerial photographs. Wild PUG4 point transfer devices as shown in photo .17P, were introduced in c1968 superseding the PUG2 devices. PUG4 devices were used by technicians to stereoscopically view the photography containing the survey control points and the mapping aerial photography. The Control points were transferred from the control photography to the mapping diapositives of aerial photography by drilling their locations into the photographic emulsion. See item 6195.19P for more photos of aerotriangulation equipment and their operation in map production.
Physical description
This is a set of 17 photographs of Air Survey Squadron aerotriangulation equipment and personnel taken at the Army Survey Regiment at Fortuna, Bendigo, circa 1989. The photographs are on 35mm negative film and scanned at 96 dpi. They are part of the Army Survey Regiment’s Collection.
.1) to .7) - Photo, black & white, c1989, OMI/Nistri APC/3-1 analytical stereoplotter.
.8) - Photo, black & white, c1989, miscellaneous aerotriangulation equipment.
.9) to.10) - Photo, black & white, c1989, Digital Equipment Corporation (DEC) 11 VO3-L Superminicomputer, with VT52 DECScope terminal.
.11) to .15) - Photo, black & white, c1989, miscellaneous aerotriangulation equipment.
.16) - Photo, colour, c1989, Zeiss (Jena) Stecometer, unidentified technician.
.17) - Photo, black & white, c1989, Wild PUG4 point transfer device, unidentified technician.
Inscriptions & markings
.1P to .17P – There are no annotations