Telescopes

Monthly Archives: May 2019


How to Collimate an RC – the Williamson Method

Many of you, Ritchey-Chretien owners would confirm that aligning an RC is not always the biggest fun. One of our customers. Peter Williamson provided a great and comparatively simple method to align an RC. He used it on an 8″ RC, but read on and you will see that he also added few notes for larger RCs… “Hi Lads, As you have all pointed out, collimating the cheaper RCs, with the focuser attached to the Primary mirror cell, ain`t easy.… Read more »