Abstract
It is generally accepted that stellar annual or secular aberration is attributed to the changes in velocity of the detector. We can say it in a slightly different way. By means of the all known experiments, stellar aberration is directly or indirectly detectable and measurable, only if a detector changes its velocity. Our presumption is that stellar aberration is not caused by the changes in the velocity of the detector. It exists due to the movement of the detector regarding to an absolute inertial frame. Therefore it is just the question of how to choose such a frame. In this paper it is proposed a method to detect and measure instantaneous stellar aberration due to absolute velocity. We can call it an “absolute” stellar aberration. Combining an “annual” and an “absolute” we can define a “total” stellar aberration.
Highlights
It is commonly assumed that due to the aberration the observed position of a star is displaced of about 150” toward the direction of the instantaneous velocity of the observer with respect to an inertial reference frame at rest
An annual stellar aberration is related to the orbital revolution of the Earth about the sun
It is already known that a secular or galactic aberration is related to the changes in the movement of the solar system inside the Galaxy [3]
Summary
It is commonly assumed that due to the aberration the observed position of a star is displaced of about 150” toward the direction of the instantaneous velocity of the observer with respect to an inertial reference frame at rest. In the sun’s reference frame median lines AB and A'B' are represented by two different positions. Δθ—an angle at which a telescope should be tilted in the direction of motion in order for the photons move along the median line of the telescope. This angle is obtained by the two measurements at six months intervals. The problems related to the stellar aberration that are being treated in this paper, had been already defined and mentioned in the numerous works for example [4]
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