While still in three volumes, there is not a one-to-one correspondence between the material in the original and new versions of each volume. This article is about the series of books by Albert Graham Ingalls. It also featured numerous drawings by Porter. Articles on pendulum clocks and photoelectric photometry were deleted. For the hobby, see Amateur telescope making. Porter convinced Ingalls to use Scientific American as a platform for "spreading the telescope making virus. The first article appeared in November ; in it, Ingalls wrote that if there was a strong enough response from readers, he would write a follow-up article with instructions for making a mirror and mounting for a simple telescope.
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They are often referred to collectively as the "bible" of amateur telescope making. In the "Preface" to the 3rd edition of Volume 1, Ingalls wrote. Porter convinced Ingalls to use Scientific American as a platform for "spreading the telescope making virus. Views Read Edit View history. Some of the workers -- a very few -- have strongly urged that the amateur's telescopes be standardized on a few definite type specifications, arguing that this would save labor. Most of the changes consisted of new material, but there were also deletions, e.