Tele Vue 41mm Panoptic - Manual

Tele Vue Optics, Inc., 32 Elkay Drive, Chester, N.Y. 10918 (845) 469-4551
55&41.DOC 11/17/2008
55mm PLÖSSL and 41mm PANOPTIC
EYEPIECES with ADJUSTABLE
HEIGHT EYEGUARD ADAPTER
Thank you for purchasing either the Tele Vue 55mm Plössl eyepiece or the 41mm Panoptic
eyepiece. Our patented designs, multi-coatings, and blackened lens edges contribute to
making them the sharpest available. Their true field is also the largest possible in a 2-inch
barrel eyepiece.
The unique Adjustable Height Eyeguard Adapter aids in properly positioning your eye in the
exit pupil, minimizing "pupil shadowing" and reducing stray light to maximize contrast. Its
soft rubber eyeguard may be used fully extended or rolled back, whichever is more
comfortable; it can also be removed completely. You can even extend one portion of the
rubber eyeguard to shield external light.
To set the eyeguard position, unscrew the upper part of the black metal eyeguard housing
until the desired height is reached. Note the position of the bottom edge of the eyeguard
housing. Then, raise or remove the eyeguard housing until you can bring the concealed lock
ring up to the approximate position you noted. Screw the eyeguard housing down onto the
lock ring and your position is set.
If you must clean the eyelens, unscrew the eyeguard housing completely. First blow off any
dust with a bulb-type puffer. Then moisten (but do not soak) a Q-Tip with Windex and clean
the lens surface with a gentle circular motion. Never pour any liquid directly on the lens
surface, since capillary action will cause the fluid to leak down into the eyepiece, possibly
dissolving the lens edge blackening.
Both models accept DIOPTRX, the accessory to correct eyesight astigmatism, which is likely
to be visible with long focal length eyepieces that naturally produce large exit pupils. For
example, a 55mm Plössl with an f/10 telescope produces a 5.5mm exit pupil.
Note for eyeglass wearers using the 41mm Panoptic eyepiece
To achieve maximum eye relief, eyeglass wearers can completely unscrew and remove the
eyeguard housing.
Note on focusing the 55mm Plössl eyepiece
Because the field stop is located near the bottom of the chrome eyepiece barrel, you will
need to rack your focuser out further, relative to most other eyepieces. If you find that you
cannot rack your focuser out enough to achieve focus, we strongly recommend you
purchase our 2" Eyepiece Barrel Extender (product code EBX-2120), available at all Tele
Vue dealers. The Eyepiece Barrel Extender will make Tele Vue’s 55mm Plössl eyepiece
approximately parfocal with our 27mm Panoptic eyepiece.