[UniPol]

I recall seeing these scopes in the early 1970's at Astro Optical in Crows Nest (then known as Amateur Astronomers Supply Co.) One of their catalogues from 1972 states the following :

12 1/2" CASSEGRAIN - E.F.L. 200"

We have recently developed this superb observatory instrument to meet the need of the advanced amateur both for visual and photographic work, This model represents the ultimate in this field. A Dall Kirkham configuration has been adapted to permit greater accuracy in manufacture. All mirrors are finally null tested on star images.

Special features include : Optics figured better than 1/15 wave accuracy: extensive baffling to reduce stray light; six high quality eyepieces ( 60, 40, 25, 18, 12.5 & 6mm). Useful magnification 80x - 800x; illuminated cross hair 8 x 50 finder; Unitron guidescope 77 x 60; aluminium tube with end band and dust cap; super rotary eyepiece selector; deluxe mount and stand; electric motor drive. Easy terms on $450 deposit - FULL PRICE $1350 Plus freight and packing.

The deluxe stand had 1 1/2" ground DEC and RA shafts supported by ball bearings.


Hope this helps.

Steve B