Available from f/4 to f/10, or if you cannot decide, at three or four focal lengths in the one mirror, these optics are unconditionally guaranteed to show all the colours of the moon, as well as normally obscure comets around many of the brighter stars.
For mirrors from 10" to 50", write or call Copro Lite & Co., Slaughteryard Road, Gulgong NSW.
When ordering, please specify your choice of wave measurement: radio wave or Bondi wave. Optical wave tested mirrors incur an additional fee of approx $400 per inch of aperture.