Stargazing Is it a true explanation of an aberration of starlight?

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In 1727, J. Bradley discovered stellar aberration, a phenomenon where stars appear to shift position due to Earth's orbital motion at 29.8 km/sec. This causes stars to trace elliptical paths on the celestial sphere, requiring telescopes to be tilted forward to accurately observe them. The effect is similar to aiming ahead of a moving target to ensure a hit. The discussion highlights the need for adjustments in telescope alignment based on Earth's seasonal position. Understanding this aberration is crucial for accurate astronomical observations.
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In 1727, astronomer J. Bradley discovered the phenomenon of stellar aberration. All stars throughout the year on the celestial sphere pass ellipses with an semimajor axis observed from the Earth at an angle of 20.5. Aberration is caused by the movement of the Earth in its orbit around the sun at a speed of 29.8 km / sec. To watch a star from moving Earth you need to tilt а telescope tube forward motion because as long as the light passes a tube. eyepiece with the Earth will move forward.
 
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daggab said:
To watch a moving earth star

a what ?

where did you quote this text from ?
 
davenn said:
a what ?

Oh, sorry. It's a misprint.

To watch a star from moving Earth...

 
The English in that explanation is not very clear, but the basic idea is there-- as the Earth moves in its orbit, it changes the direction from which starlight appears to arrive. So to find a star in Winter that you saw in Summer, you have to point the telescope slightly differently. It's the reverse effect of the reason why you have to aim in front of a moving target in order to hit it.
 
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