A Conversation for Star Constellations: The Bootes
coordinates
shagbark Started conversation Jan 29, 2003
coordinates line should include a declination
coordinates
Cefpret Posted Jan 30, 2003
There is a declination. Rectascension is given in hours, minutes, and seconds (however in this case only hours). Declination is given in degrees.
coordinates
shagbark Posted Feb 2, 2003
...
It is given in degrees N or S not just degrees.
This consellation is at 30 degrees N +/- 20 degrees.
coordinates
Cefpret Posted Feb 2, 2003
I don't know this S/N notation (at least not on the *celestial* sphere) and the current notation is unambiguous. However the extent of the constellation is indeed helpful in order to know from where on Earth the constellation is visible. I'll include that in all entries.
coordinates
shagbark Posted Feb 3, 2003
It appears that the current IAU guidelines use a + for northern constellations and a minus for southern ones.
see http://cdsweb.u-strasbg.fr/iau-spec.html paragraph 3.5 for proper and improper designations.
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