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More Information  · Recommended Accessories Price $150.00 List Price $180.00 Field of view 50° Eye Relief 18mm Focal Length 32mm Number of optical elements 4 Barrel Size 1.25" Weight 7 oz Warranty 5 years Telescope Eyepiece Formula To calculate the magnification and approximate actual field of view of this eyepiece on your telescope, enter the focal length of your telescope below and press the "Calculate" button. mm

It provides a big 7.1mm exit pupil with an f/4.5 Dobsonian reflector for rich field scanning of the Milky Way star clouds in Sagittarius from a dark sky site. As the eyes of some observers may no longer be able to dilate to a full 7mm, however, this eyepiece could potentially waste some of the light-gathering capability of a fast focal ratio scope. Thought should be given to matching its exit pupil size to your eyesight before purchasing if you have a fast focal ratio scope, unless you are content to give up some light gathering in exchange for a wider view of the universe.

This is an excellent choice to replace the so-so 26mm eyepiece that comes with many moderately-priced scopes, not only to improve the edge-to-edge sharpness, but to give a wider and brighter field of view, as well. Excellent eye relief for unvignetted viewing for eyeglass wearers.