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The National Geographic 50mm Portable Refractor Telescope (RF360MM) is the ideal grab-and-go optical tool for travelers
With its combination of large aperture
All 100° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast
Project Pluto
764in / 121mm Width
2" 2X Focal Extender Accessory Type_Viewfinder The National Geographic 50mm PortableThe Explore Scientific 2X Focal Extender (2. 0 inch O. D.), accepts both 1. 25 inch O. D. and 2. 0 inch O. D. format eyepieces and camera adapters. Fully EMD Coated on all air to air lens surfaces, with all lens elements edge blackened to produce superior contrast, this 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
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