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GlennLeDrew
professor emeritus
Reged: 06/18/08
Posts: 633
Loc: Ottawa, Ontario, Canada
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Re: Backyard Astronomers Guide 3rd Edition
06/27/08 07:40 PM
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The first edition had a rather limited atlas of selected regions, based on photographs. This was deleted in the second edition. The desire for some kind of atlas in the third edition resulted in the new and unique Milky Way atlas, created by yours truly.
There are 10 charts covering the entire band of the Milky Way, and all are oriented with the galactic equator running horizontally. Each chart covers 45 degrees wide by 56 degrees tall, with about 9 degrees of overlap at each edge. There are two charts for each region; a un-labeled colour positive, and facing it a B&W negative with labeling.
The base of the charts is an intricately detailed and realistic milky way, revealing billowing star clouds and hundreds of dark nebulae.
Stars are shown to mag. 9, and all are colored based on their B-V index. Open clusters are a bluish color and globulars are yellowish. Emission nebulae are red and reflection nebulae are bluish. Planetaries are colored a bright greenish cyan. In other words, the effect striven for was one reminiscent of photographs, which allows to discern immediately the kind and nature of all objects. But unlike any photo deep enough to show nebulae and milky way structure, and hence a dense profusion of stars, with these charts it's a snap to relate an object's location with readily-observable "guide" stars to point the way.
I hope you find this Milky Way atlas useful!
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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Mediocre minds discuss people. Good minds discuss events. Great minds discuss ideas.
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