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