Andro
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Initial determination of RA for an object
Andro replied to Andro's topic in Physics, Space Science and Theories
Yes @robin_astro I believe Stellarium takes this effect into account very precisely, does it not? -
Excuse me if this question is too elementary for this forum, or in the wrong forum - I'm a newbie here. How do astronomers initially determine the RA of a star, for star catalogues and nautical almanacs for example? While I believe I understand RA, I don't know how it is figured to begin with. I was surprised that I can't find the specific answer to this anywhere using google. Is it done with transit telescopes and measuring meridian crossing times? And if so, as a secondary question, how can astronomers catalogue so many millions of stars with their accurate RA and Dec? It would appear to be almost impossible to do this manually.