Excerpt from A New Star Atlas for the Library, the School, and the Observatory: In Twelve Circular Maps (With Two Index Plates), Intended as a Companion to “Webb’s Celestial Objects for Common Telescopes,” With a Letterpress Introduction on the Study of the Stars, Illustrated by Several Woodcuts
No pains have been spared to clear the maps of all which could cause confusion to the beginner; but this has been done in such a way that the more advanced student may find nothing wanting. For example, the meridians and parallels are drawn in to every fifteenth, instead of every fifth degree (as usual) but, since all the intersections of these lines to every fifth degree are marked in the maps (with a small cross), the places of stars can be determined, from catalogues or the like, as readily as though the lines themselves were marked in. In like manner all the longitude and latitude lines, except the ecliptic and the solstitial colures, are omitted; but their intersections to every fifteenth degree are marked (with a small dotted cross), and any student who is sufficiently advanced to require these lines will be able to recognise very readily where they lie, or to pencil them in if need be. I consider their omission, and the omission of all but every third of the me ridians and parallels usually introduced, to be abso lutely essential for the convenience of the majority of those who will use these maps; though the maps would, undoubtedly, be imperfect if the position of these lines were not indicated.
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