 TeleVue Ethos EyepiecesTeleVue lead the way once again with the superb Ethos range of eyepieces. Each has an enormous 100-degree apparent field of view enabling you to operate at a higher magnification and still see as large a patch of sky. Apart from giving you the feeling of 'being there' the higher magnification improves contrast in star fields so your favourite objects stand out whilst still fitting in the field. TeleVue introduced the 13mm Ethos first and it caused a great deal of excitement and interest. They followed it with the 8mm which was equally well received. The 6mm and 17mm then joined the family, and now the 10mm completes a very impressive lineup. These eyepieces are designed to give that 'space-walk' feel when used with a quality telescope. The image on the right shows the same true field of the Double Cluster as seen through a 13mm Ethos (left) and a 26mm Plossl (right). The Ethos has double the power so the background is significantly darker and contrast is greatly improved. In fact, the background light is spread over four times the area it would be in a 26mm Plossl which improves contrast by a factor of four. When the improved contrast is combines with the extra magnification it provides what Al Nagler calls a 'majesty factor of 8' - an attempt to quantify the awesome experience these eyepieces offer compared to a standard eyepiece. |