An excellent and physically-impressive premium-quality low power wide field 2" eyepiece for the serious deep space explorer. The Tele Vue 35mm Panoptic, for example, will give you a 1.19 degree field at 57x with a big 17.5" f/4.5 Dobsonian. That's well over two lunar diameters and is ideal for observing large emission and reflection nebulas and nebula remnants. While it's particularly well-suited for Dobsonian use, it can provide "picture window onto space" images with any telescope type that can use a 2" eyepiece. The 35mm Panoptic provides a huge 7.8mm exit pupil on an f/4.5 scope, which may actually waste some of an f/4.5 scope's light-gathering capacity if your eye can't dilate enough to take in such a large exit pupil. Focal ratios of f/5 (a 7mm exit pupil) and longer may benefit the most from this very big and visually-impressive eyepiece. With a huge 28mm of usable eye relief, the 35mm Panoptic can be used by eyeglass wearers with no vignetting of the field. The 35mm Panoptic would be a welcome addition to any serious eyepiece collection. It weighs a hefty 28 ounces, so you may have to do some scope rebalancing when you use it with some low friction Dobsonians. Tech Details: Barrel Size 2" Eye Relief 28mm Field of view 68 Focal Length 35mm Number of optical elements 6 Weight 28 oz Warranty Limited Lifetime
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