The 32mm Vernonscope Brandon eyepiece is designed for nigh-perfect low power deep sky observing with any telescope type, at focal ratios f/7 and above. Emission and reflection nebulas, planetary nebulas, globular clusters, open clusters - all look superb against the dark sky background of the tack-sharp, high contrast, 32mm Brandon. With shorter focal length scopes, down to f/4, it is still exceptionally sharp at the center of the field (although somewhat less so at the edges). Eye relief at 15mm allows relatively unvignetted use with eyeglasses. Brandon 32 mm EFL Vernonscope 1.25" eyepiece The Brandon is the sharpest design currently available for eyepiece projection photography. The body of the 32mm is considerably narrower than most similar focal length Plössl eyepieces, allowing its use in an eyepiece projection adapter much more readily than a wider Plössl. Its rolldown rubber eyecup can be removed, should the eyepiece/eyecup combination be too wide to fit easily into your eyepiece projection adapter. Be sure that its 2.25" body length is not too long for your adapter, however. Effective focal length (EFL): 32mm, Apparent field of view (AFOV): 45 degrees, as calculated from the focal length and field stop diameter, Eye relief: about 32mm, Field stop diameter: 25mm, as measured with a caliper, Weight: 3.1 oz

Item condition: used Item with possible small cosmetic deffect, but every function works perfect