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Authors: Jingshown Wu 1 ; Yen-Ru Huang 1 ; Shenq-Tsong Chang 2 ; Hen-Wai Tsao 1 ; San-Liang Lee 3 and Wei-Cheng Lin 2

Affiliations: 1 National Taiwan University, Taiwan ; 2 Instrument Technology Research Center, Taiwan ; 3 National Taiwan University of Science and Technology, Taiwan

ISBN: 978-989-758-008-6

ISSN: 2184-4364

Keyword(s): Light Speed, Optics, Astrophysics.

Related Ontology Subjects/Areas/Topics: Optics ; Optics in Astronomy and Astrophysics ; Photonics, Optics and Laser Technology

Abstract: We proposed a novel method and implemented an optical system accordingly to measure the speed of starlight by using the well-known speed of light from a terrestrial source, c, as a metric basis. This system consists of a transmitter and a receiver. The transmitter modulated starlight, terrestrial red and infrared lights into pulses simultaneously. These pulses were detected by the distant receiver. A high speed oscilloscope is used to record the pulses arrival times, where the terrestrial infrared pulse and the red pulse are used as the trigger and the reference signals. During the measurement, we employed a terrestrial white light travelling along the exact path of the starlight to calibrate the system. We found that the starlight pulses arrived at the receiver with various degrees of delays, compared with that of the terrestrial white light pulse. The values of the delays are likely related to the relative radial velocities of the stars. The result implies that the measured apparent speed of starlight is not constant. (More)

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Paper citation in several formats:
Wu, J.; Huang, Y.; Chang, S.; Tsao, H.; Lee, S. and Lin, W. (2014). The Novel Optical System of Measuring the Speed of Starlight.In Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-008-6, ISSN 2184-4364, pages 39-44. DOI: 10.5220/0004874100390044

@conference{photoptics14,
author={Jingshown Wu. and Yen{-}Ru Huang. and Shenq{-}Tsong Chang. and Hen{-}Wai Tsao. and San{-}Liang Lee. and Wei{-}Cheng Lin.},
title={The Novel Optical System of Measuring the Speed of Starlight},
booktitle={Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2014},
pages={39-44},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004874100390044},
isbn={978-989-758-008-6},
}

TY - CONF

JO - Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - The Novel Optical System of Measuring the Speed of Starlight
SN - 978-989-758-008-6
AU - Wu, J.
AU - Huang, Y.
AU - Chang, S.
AU - Tsao, H.
AU - Lee, S.
AU - Lin, W.
PY - 2014
SP - 39
EP - 44
DO - 10.5220/0004874100390044

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