TeleVue 27mm 2" Panoptic Eyepiece

An excellent premium-quality low power wide field 2" eyepiece for the serious deep space explorer. The 27mm Panoptic, for example, will give you a 0.92 degree field at 74x with a big 17.5" f/4.5 Dobsonian. That's almost two lunar diameters and is ideal for observing large emission and reflection nebulas and nebula remnants. While it's particularly well-suited for use with Dobsonians (it provides a huge 6mm exit pupil for rich field observing on an f/4.5 scope), it can provide "picture window onto space" images with any telescope type that can use a 2" eyepiece. With 16mm of usable eye relief, the 27mm Panoptic can be used by eyeglass wearers with almost no vignetting of the field of view. The 27mm Panoptic would be a welcome addition to any serious eyepiece collection. It weighs a substantial 18 ounces, so you may have to do a little scope rebalancing when you use it with some low friction Dobsonians. Tech Details: Barrel Size 2" Eye Relief 16mm Field of view 68 Focal Length 27mm Number of optical elements 6 Weight 18 oz Warranty Limited Lifetime