:focal(512x410:513x411)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/9f/b6/9fb62e19-346a-4b7f-a645-dd4651a195e0/mars_2022-506_final-1024x849.png "James Webb Captures Its First Images of Mars | Smart News| Smithsonian Magazine")
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Bulletin - United States National Museum. Science. Figure 23.—Spectroscope made by Alvan Clark & Sons in 1877 for use with the 9-inch refracting telescope at Princeton University. As shown here, the
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Spectra of Stars with a DSLR or small telescope – Field Tested Systems
