Figure 1 (a) Structure of the mesoscopic objective, (b) Aberration distribution of the mesoscopic objective, (c) Wide-field imaging system built with the mesoscopic objective, (d) Laser point-scanning ...

You’ll struggle to find a more affordable pair of roof prism binoculars for viewing the night sky with the Celestron UpClose G2 10x50’s 10x magnification and 50mm objective lenses. They’re the perfect ...

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IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. John A. Brashear made this long-focus ...