| 31. | However, the vernal equinox and the full moon are not determined by astronomical observation.
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| 32. | He began maintaining detailed journals of all his astronomical observations.
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| 33. | Rayton's lens design skill did much to advance astronomical observation.
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| 34. | In 1840, M�dler was appointed director of the meteorological as well as astronomical observations.
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| 35. | He has also presented research on ancient astronomical observations to the European Association of Archaeologists
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| 36. | Gro�mugl opened a permanent star walk installation designated for astronomical observations with the unaided eye.
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| 37. | Occasionally there will be public access to astronomical observations made by a local astronomy club.
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| 38. | The photometric function used to interpret astronomical observations and remote sensing data for the Earth.
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| 39. | She made 78, 876 astronomical observations in her lifetime.
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| 40. | The success of the telescope helped demonstrate the value of Mauna Kea for astronomical observations.
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