Each element has been treated with FMC anti-reflective polymers, for maximum contrast and image definition. Even with the use of barlow lenses, exceptional levels of contrast modulation are guaranteed, so it will be possible to use the eyepiece with satisfaction even on short refractors. The apparent field of the eyepiece is 40 ° at the minimum focal length and 60 ° at the maximum focal length. The eye relief is 15mm. Equipped with a comfortable twist-cup lens hood and fine mechanics made with CNC machines, the Auriga zoom eyepiece will guarantee you incredible observations and thanks to its incredible versatility it will be the eyepiece that you will no longer be able to do without.