... Deriving the sine or cosine of an arbitrary angle takes a bit more math than is covered here. ... Note first of all that a right-angled triangle contains two angles. ... Because the side opposite to A is the one adjacent to (90њ- A), it follows that the sine of one angle is the cosine of the other, and vice versa: . ... Consider the triangle PQR (drawing) with all three angles equal to 60њ. ... If we want the angle A to grow in equal steps of 15 o , we still need the sine and cosine of 15њ and 75њ. ...

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• Listing of Contents
• The Great Magnet, the Earth" -- Site Map

Hipparchus (and possibly Aristarchus before him) also derived the Moon's distance from the duration of a lunar eclipse . Because the Earth casts a much larger shadow than the Moon, such an eclipse usually darkens the entire Moon, for several hours. ... If the Sun is assumed to be very distant, and if the Moon crosses the middle of the shadow (if not, corrections must be made), the width of the shadow is expected to be about 2r , twice the Earth's radius r . ... Last updated 4 February 1999 Moon. ...

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• Lagrangian Points

... Posts tagged ?signal processing? ... Posted by hlee . ... Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Fitting , Imaging , Methods , Quotes , Spectral , Stat , Uncertainty | ... ArXiv] 2nd week, Mar. ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray ....

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• The AstroStat Slog Blog Archive Another exciting news (with no use)
• Another webcam from Tom
• Comments on: Another exciting news (with no use)

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . Exoplanets . ... Space Flight . ... Posted on February 3, 2011 | No Comments Kepler-11 is an amazing, newly-discovered system of exoplanets. ... Continue Reading.. ... No Comments Don Pollacco, a research astronomer at Queens University Belfast, came to Armagh Planetarium to give a fascinating talk on exoplanets in January 2011. ... Posted on November 29, 2010 | ... Posted on September 22, 2010 | ...

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• ESO finds weird doomed planet from another galaxy | Astronotes
• Science Fiction | Astronotes
• Another Earth: science of the movie | Astronotes

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• Insert the contents of another file
• Switching to another account
• Continuing a command onto another line

General Forum Message . Forums: . ... Post . ... Here Is Another Link To M13 . ... Post Message | ... I have put the image of M13 on my home Web site - along with another image of M13 (not sure where it's from, I think SEDs). http://mysite.verizon.net/respud62/id7.html . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Nothing? Beyond Numbers... - an Astronomy Net God Science Forum Message
• Another Option - an Astronomy Net Eyepieces Forum Message
• No There's Another Mistake - an Astronomy Net Blackholes Forum Message

... The Amateur Telescope Makers of Boston, Inc. ATMoB) is an amateur astronomy club devoted to telescope making, observing, and studying the heavens. ... In 1973, the Bond Astronomical Society, another long-standing club, merged with the ATMoB making the club one of the oldest and largest general interest astronomy clubs in the country. ... The Amateur Telescope Makers of Boston, Inc. is an IRS designated 501(c)3 public charity organization. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... Date: Thu Sep 13 2001 - 12:17:52 EST . Next message: Tony Wong: "invitation to workshop" . Previous message: Tony Wong: "Re: invite" . In reply to: Tony Wong: "suggestions from J. Whiteoak" . Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] . ... This archive was generated by hypermail 2b29 : Thu Sep 13 2001 - 12:17:55 EST ...

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• casacore: casa::LCBox Class Reference
• casacore: casa::LCEllipsoid Class Reference
• Research Interests

Appendix B: Annotated Bibliography There are a wide variety of texts available for those who are interested in learning more about assembly language or other topics this text covers. ... Microprocessor Programming for Computer Hobbyists Neill Graham TAB books ISBN 0-8306-6952-3 1977 This book provides a gentle introduction to data structures for computer hobbyists. ... IBM Assembler Language and Programming Peter Able Prentice-Hall ISBN 0-13-448143-7 1987 A college text book on assembly language. ...

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• NEO precovery work on the UK Schmidt archive
• How can the kernel copy directly data from one process to another process?
• Another kernel debugging tool

... redirect an entire server or directory to a single URL . ... stop/restrict robots . proxy SSL requests through your non-SSL server . There are two chief ways to redirect all requests for an entire server to a single location: one which requires the use of mod_rewrite , and another which uses a CGI script. First: if all you need to do is migrate a server from one name to another, simply use the Redirect directive, as supplied by mod_alias : Redirect / http://www.apache.org/ . ...

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... Another piece of asteroid discovery news, from Terry Moseley: "Dave Grennan from Dublin has just discovered a Main Belt asteroid from his observatory in Raheny. ... Dave's discovery comes just after Dave McDonald's find of 2008 TM9 a few weeks ago. ... This is only the third asteroid ever discovered in Ireland. ... This has been an amazing year for astronomy in Ireland, and is a superb lead-in to IYA 2009!" ... International Year of Astronomy, Ireland National Node . ...

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• Coronal Bright Points: Another Oscillating Environment
• Terry Mosely's Bulletins
• Armagh Observatory

... Another Nearby Supernova in the Whirlpool Galaxy . ... Credit Copyright: Stephane Lamotte Bailey, Marc Deldem , Jean-Luc Dauvergne Explanation: One of the brightest supernovas in recent years has just been recorded in the nearby Whirlpool galaxy (M51). ... Pictured above are two images of M51 taken with a small telescope: one taken on May 30 that does not show the supernova, and one taken on June 2 which does. The June 2 image is one of the first images reported to contain the supernova. ...

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