| 11. | It also has important implications for photometric stereo, etc.
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| 12. | Several rotational light-curve were obtained from photometric observations.
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| 13. | An identical period was modeled from the Lowell Photometric Database ( ).
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| 14. | Several rotational light-curves were obtained from photometric observations.
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| 15. | Spectroscopic observations of the Sun and photometric observations of stars were initiated.
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| 16. | Shows significant photometric variability with the lightcurve amplitude of 0.21.
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| 17. | Astronomers have developed other photometric zeropoint systems as alternatives to the Vega system.
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| 18. | The 60-inch telescope is a reflector telescope built for photometric photography.
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| 19. | The lumen is the photometric unit of light output.
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| 20. | More complex forms of photometric measurement are used frequently within the lighting industry.
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