- Paperback: 200 pages
- Publisher: Cambridge University Press; 3 edition (March 31, 1988)
- Language: English
- ISBN-10: 0521356997
- ISBN-13: 978-0521356992
- Product Dimensions: 6 x 0.6 x 9 inches
- Shipping Weight: 12 ounces
- Average Customer Review: 31 customer reviews
- Amazon Best Sellers Rank: #1,071,891 in Books (See Top 100 in Books)
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Practical Astronomy with your Calculator 3rd Edition
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About the Author
Peter Duffett-Smith is a physicist by training, and a radio astronomer by trade. He is a Reader in Experimental Radio Physics at the Cavendish Laboratory, University of Cambridge, and is a fellow of Downing College and the Royal Astronomical Society. --This text refers to an out of print or unavailable edition of this title.
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Top customer reviews
1. Key in the month number.
Why key-in a number which will either be incremented or decremented after testing? Key-in the adjusted number.
2. If the month number is greater than 2, skip to Step 8.
3. Subtract 1 from month number.
This branch is taken when the month number is 1 or 2; therefore, the following steps will operate on either 0 or 1.
4. Multiply by 63 (or 62 in a leap year).
5. Divide by 2.
6. Take the integer part.
Clearly, for 0, the result is 0. But for 1, the result is always 31! So this branch determines that there are 31 days in January. Ha! Ha! It is much simpler just to add 31 to the day in February. I will omit the remaining six steps. A somewhat simpler procedure can be found at Wikipedia.org.
I have not used the later chapters which cover objects in our local system, but I imagine they would be very useful to the amateur astronomer. Unfortunately, the book does not explicitly cover objects outside the local system, but gives you all the formula's you need: simply find the object's right ascension and declination in some online catalog somewhere (there are hundreds of extensive catalogs available for free) and, using the provided formulas, convert into coordinates you can use with your telescope.
Overall, *very* useful for the experimentalist or amateur astronomer.
I worked through it with my trusty HP15C. Good fun.