Books by Philip S. Harrington

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Topics covered

Chapter 6 notes

• Page 133.  The parenthetical sentence "(Remember, exit pupil is calculated by dividing the magnification by the telescope's focal ratio, or f/ number)" should read "...by dividing the focal length of the eyepiece by the telescope's focal ratio."  You can also calculate the exit pupil by dividing the telescope's aperture (best converted to millimeters first) by magnification.

Recommended reading

    Books

• Celestial Harvest: 300-Plus Showpieces of the Heavens for Telescope Viewing and Contemplation; Mullaney, J.  Dover, 2002; ISBN 0486425541.

• Celestial Sampler; French, S.; Sky Pub Corp, 2005; ISBN 1931559287.

• The Deep Sky: An Introduction; Harrington, P.; Sky Pub Corp, 1997; ISBN: 0933346808.

• Deep-Sky Wonders; Houston, W. and O'Meara, S.; Sky Publishing, 1998; ISBN 093334693X.

• Night Sky Observer's Guide, volume 1 (Autumn/Winter) and volume 2 (Spring/Summer); Kepple, G. and Sanner, G.; Willmann-Bell, 1998; ISBN 0943396581.

• Star-Hopping : Your Visa to Viewing the Universe; Garfinkle, R.; Cambridge Univ Pr (Trd), 1997; ISBN: 0521598893.

• Touring the Universe Through Binoculars; Harrington, P.; John Wiley & Sons, 1990; ISBN 0471513377.

• Turn Left at Orion; Cosmolmagno, G. & Davis, D.; Cambridge Univ Pr (Trd), 2000; ISBN 0521781906.

• Year-Round Messier Marathon Field Guide; Pennington, H.; Willmann-Bell, 1998; ISBN 0943396549.

    Web sites

• Adventures in Deep Space

  • Some deep-sky observing projects to challenge even the most devout deep-sky observer.

• Clear Sky Clock Home page

  • Interesting site that graphically shows when the skies will be clearest (and cloudiest) over a number of selected locations throughout North America.

• Dark-Sky Site Directory

  • Directory of publicly accessible observing sites throughout the United States and Canada.

• Deep Sky Collections and Catalogs

  • Messier, Herschel, the NGC.  You name it, it's here!

• The Deep-Sky Database

  • An excellent site and tool for deep-sky observers. The site uses a web-based version of the Saguaro Astronomy Club's database, which consists of more than 10,000 records.

• Impressions of the Deep Sky

  • If you want to see what various deep-sky objects actually look like through amateur telescopes, this web site is a gold mine of information.

• International Dark Sky Association

  • The parent organization heading up the effort against excessive, poorly designed lighting.

• Light Pollution Awareness Web Site

  • Great resource for the fight against light pollution.

• National Deep Sky Observers Society

  • A worldwide network of deep-sky observers.

• NetAstroCatalog

• A mailing list and repository for posting deep-sky observations.

• Planetary Nebula Web Site

  • An excellent resource for those who enjoy the challenge of hunting down these often elusive objects.

• Richard Bell's Deep-Sky Page

• Visual Deep Sky

  • Like Impressions of the Deep Sky above, this web site contains some wonderful drawings of deep-sky objects made through the author's (Andreas Domenico) telescope.

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