Declination and Right Ascention

astroboy17

I have two questions I cannot figure out:

How is declination measured in the celestial sphere, in comparison with how terrestrial latitude is measure on earth

How is RA measured in the celestial sphere, in comparison with how terrestrial longitude is measure on earth.

Thanks!!

mgb_phys

Declination - degrees (+ve=north) from the equator
RA - is measured from the first point of aries ( where the sun crosses the equator in spring )

It's tricky to descibe without pictures so take a look at http://en.wikipedia.org/wiki/Equator...rdinate_system

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astroboy17	Declination and Right Ascention Tweet I have two questions I cannot figure out: How is declination measured in the celestial sphere, in comparison with how terrestrial latitude is measure on earth How is RA measured in the celestial sphere, in comparison with how terrestrial longitude is measure on earth. Thanks!!

mgb_phys Recognitions: Homework Help Science Advisor	Declination - degrees (+ve=north) from the equator RA - is measured from the first point of aries ( where the sun crosses the equator in spring ) It's tricky to descibe without pictures so take a look at http://en.wikipedia.org/wiki/Equator...rdinate_system