View Full Version : Discussion: Book Review: Deep Sky Observer's ...

2005-Feb-21, 06:32 PM
SUMMARY: Twinkle, twinkle little star, how I wonder what you are. Or are you a star? Perhaps you're a gargantuan galaxy, capricious globular cluster or a burgeoning supernova. When I'm not sure what's attracting my fancy late at night, then I can use Neil Bone's, Deep Sky Observer's Guide to aid in identifying jewel-like sparkles in the sky so high.

View full article (http://www.universetoday.com/am/publish/book_review_deep_sky_guide.html)

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Dave Mitsky
2005-Feb-24, 02:46 PM
There's at least one obvious error in the review.

"The history of viewing identifies some of the important individuals as well as some of their unique instruments. For example, most subjects come with their Messier's identification. We also learn about de Chesaux's catalogue of 9776 objects. Bode identified 77 nebulous groups while Hershel had his own list of 400."

Sir William Herschel, one of the greatest visual observers of all time and the father of astrophysics, catalogued 2514 deep-sky objects (for a list of them see http://obs.nineplanets.org/herschel/h2500.txt ). These objects, along with ones from the southern hemisphere catalogued by his son John, eventually became the New General Catalogue. The 400 objects that the reviewer mentioned are merely a part of William Herschel's catalogue that were chosen for an observing program sponsored by the Astronomical League, a group of American astronomy clubs. The AL also has an award for observing another 400 of the Herschel objects, which is know as the Herschel II Club.

http://www.astroleague.org/al/obsclubs/her...l/her400cl.html (http://www.astroleague.org/al/obsclubs/herschel/her400cl.html)

More on Herschel can be found at http://www.seds.org/messier/xtra/similar/herschel.html

Dave Mitsky