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Eliminates over 90% of the distortion inherent in conventional one-sided planispheres
Apparent Field of View (Mfg Specified)
25" Telescope Eyepiece Filter High Contrast Cuts Sky Light Pollution
75 T-mount thread on the other end to connect a suitable CCD camera
Explore Scientific 2x Focal Extender Barlow 1.25" Flattener Eliminates over 90% of theA good Focal Extender adds some real versatility to your telescope accessory line up. First of all, it allows you to increase the magnification of any eyepiece with the same barrel size that you already own. In other words, 3 eyepieces offer 6 magnification choices with the addition of a focal extender. Secondly, most of the time, lower magnification eyepieces have better eye relief than higher power models. When using a focal extender to increase
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