William Optics
William Optics SPL eyepiece£69.00 - £199.00 These new SPL (Super Planetary Long eye-relief) eyepieces feature edge-blackened, multi-coated optics for bright, high contrast views. Long 20mm eye-relief for comfortable viewing when wearing eyeglasses. |  | | William Optics SWAN eyepiece£59.00 - £89.00 William Optics Swan eyepieces are super-wide-angle designs with 72° apparent field of view. They use simple but sophisticated five-lens optical systems for generally higher contrast than the more complicated optical designs used in some other SWA eyepieces that use up to eight lenses. | | | |
