11. He was an early pioneer of stellar photoelectric photometry . 12. He was active in the fields of photometry , astrometry and spectral classification. 13. This typically is the goal of technical photometry software. 14. The type M1.3 is assigned by a numerical calculation from photometry . 15. Detecting binaries with these methods requires accurate photometry . 16. This telescope is used exclusively for CCD photometry . 17. When Robert Baker arrived he continued a photoelectric photometry program focusing on variable stars. 18. It was listed as one of the least variable stars based on Hipparcos photometry . 19. A SBIG ST8300M camera is used for Astrometry and Photometry in several observation programs. 20. He was an expert on the photometry and polarimetry of small Solar System bodies.
