Pentax SMC XL Zoom 8-24mm eyepiece, The eyepiece is used by Pentax mainly in the spotting scope, therefore also the spotting scope-like labeling Focal length 8 mm - 24 mm Apparent field of view 60° - 38° Pupil distance 20 mm plug-in diameter 1.25" (31.75 mm)
Item condition: new, but not original packed
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Baader Mark IV Hyperion Zoom & Hyperion Zoom Barlow Lens 2.25x The set consisting of the MARK IV Hyperion 8-24 mm Universal wide angle Zoom eyepiece (#2454826) and the Hyperion zoom Barlow 2.25x (#2454654) results in combination in a zoom eyepiece with a large focal length range. The set covers all eyepiece focal length from 3.6-24 mm. This set can only be used on astronomical telescopes; use with tripods is only possible without the Barlow lens. The advantages of a zoom eyepiece for highest magnifications are obvious: ♦ Usually, you need at least 2 good fixed focal length eyepieces for high magnifications to adapt to the changing conditions like seeing, object brigthness etc. The Hyperion Zoom with the especially for this eyepiece designed Barlow lens allows an optimal gradation of magnifications, you can perfectly adapt to object, seeing and, of course, the limit of the telescope. At the same time, the matched Barlow lens provides high image quality in the respective area of focal lengths - normally a weak point of the combination of zoom eyepiece and Barlow. ♦ With the Hyperion Zoom, you have an eyepiece with best viewing comfort at hand. Only few fixed focal length eyepieces have comparable comfort at similar magnification. ♦ Large apparent field of view even at maximal focal length - no "tunnel vision" like with other zoom eyepieces ♦ The Hyperion Zoom is optimally suitable for planetary photography, you can perfectly adapt to the object photographically, too.