CSIRO PUBLISHING | Australian Journal of Physics

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Phys."> <meta name="citation_publisher" content="CSIRO PUBLISHING"> <meta name="citation_author" content="WH Steel"> <meta name="citation_title" content="On the Choice of Glasses for Cemented Achromatic Aplanatic Doublets"> <meta name="citation_online_date" content="1954"> <meta name="citation_publication_date" content="1954"> <meta name="citation_volume" content="7"> <meta name="citation_issue" content="2"> <meta name="citation_firstpage" content="244"> <meta name="citation_lastpage" content="253"> <meta name="citation_doi" content="10.1071/ph540244"> <meta name="citation_fulltext_world_readable" content=""> <meta name="citation_pdf_url" content="https://www.publish.csiro.au/ph/pdf/ph540244"> <meta name="citation_issn" content="1446-5582"> <meta name="citation_language" content="en"> <meta name="citation_article_type" content="RESEARCH ARTICLE"> <meta name="citation_abstract" content="It is shown that the types of glass given by tables for thin, low aperture telescope objectives of the "crown leading" doublet form are also those most suitable for thick, high aperture systems. 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The maximum focal lengths and the tolerances permissible in glass properties are given for each aperture, and the variation of these properties is considered when the thickness or wavelength of correction is changed, or the objective used with prisms. </div> <p>https://doi.org/10.1071/PH540244</p> <p> © CSIRO 1954 </p> </section> <section id="second-sidebar" class="region-second-sidebar small-12 large-3 medium-6 no-pad columns"> <div class="gray-highlight-box article-action" tabindex=0> <a class="article-pdf" href="/ph/pdf/PH540244">PDF (2.8 MB)</a> <a class="article-export" href="/PH/ExportCitation/PH540244">Export Citation</a> </div> <div class="gray-highlight-box" tabindex=1> <p>Share</p> <a href="/linkout/facebook/u=www.publish.csiro.au/ph/PH540244" target="_blank" rel="nofollow noopener noreferrer"><img src="/images/facebook.png" alt="Share on Facebook" data-rjs="2" width="28" height="28"></a> <a href="/linkout/twitter/url=www.publish.csiro.au/ph/PH540244&text=On the Choice of 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