Abstract
THE first edition of this admirable little volume appeared in the year 1891, and since that time its fame has spread abroad, and both German and Italian translations have been made. In this short interval of time a very notable advance has been made in the construction of objectives. The new triple photo-visual objective is the outcome of experiments made by Messrs. Cooke's optical manager, Mr. H. Dennis Taylor, in the direction of improving the so-called achromatic telescope. The success with which he has been rewarded, has given astronomers an objective which is not only free from colour aberrations, but which can be used for celestial photography without the necessity of any further adjustment.
On the Adjustment and Testing of Telescopic Objectives.
By T. Cooke and Sons. Second edition. Pp. 96. (York: Delittle and Sons, 1896.)
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L., W. On the Adjustment and Testing of Telescopic Objectives. Nature 55, 221–222 (1897). https://doi.org/10.1038/055221b0
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DOI: https://doi.org/10.1038/055221b0
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