41. Refracting life's absurd reasonings through a prism of the bizarre is a specialty of this young author.42. The refractive quality of spectacles, contact lenses, microscopes and refracting telescopes are all examples of this manipulation. 43. However many of the lighthouses have both refracting and reflecting elements, as shown in the photographs and diagram. 44. The derivation of this equation is fairly straightforward and the result is the same for reflecting or refracting telescopes. 45. Furthermore, chromatic aberrations can be corrected by using two or more refracting materials over the full visible range. 46. All appearances and phenomena are a dream or thoughtform, inter-and intra-reflecting and refracting terma. 47. It was furnished with a refracting telescope to precisely measure the Earth s place in the Milky Way galaxy. 48. The first person who succeeded in making a practical achromatic refracting telescope was Chester Moore Hall from Essex, England. 49. The camera was originally hand-guided through one of two refracting telescopes mounted on either side of the camera. 50. The main telescope under the dome is a 175 / 1400 mm TMB APO refracting telescope installed in September 2007.