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Little help? Unit Vector to Ascension and Declination

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scott-zelenak
(@scott-zelenak)
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OK, I'm really rusty on this.

I need to convert a unit vector to right ascension and declination.
I believe I recall the formulae correctly, as I seem to have gotten 1 as my radius.
So, that's good.

In the pic I have my unit vector (P2), my actual answer below, my expected answer in red and the formulae I (believe) I need in blue shaded cells.

Anybody help me out here, before I go to the physics forum and give them a good giggle....


 
Posted : February 20, 2013 7:54 pm
scott-zelenak
(@scott-zelenak)
Posts: 601
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Ah, gotta love the Physics Forums guys...

They pointed me away from the incorrect formulae...


 
Posted : February 20, 2013 9:57 pm