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Summary

Description Method of making observation instruments
Date Qing Dynasty of China
Source YiXiangKaoCheng（《儀象考成》）
Author Mainly based on 徐光啟's 《崇禎曆書》 (late Ming Dynasty)
Permission
(Reusing this file)		 Public Domain

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exposure time

0.04 second

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8.22 millimetre

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Date/TimeThumbnailDimensionsUserComment
current11:01, 13 April 2019Thumbnail for version as of 11:01, 13 April 20192,048 × 1,536 (2.02 MB)Alonso de Mendozacolor
11:07, 11 July 2006Thumbnail for version as of 11:07, 11 July 20062,048 × 1,536 (1.86 MB)Gsklee~commonswiki{{Information |Description=Method of making observing instruments. |Source=YiXiangKaoCheng（《儀象考成》） |Date=Qing Dynasty of China |Author=Mainly based on 徐光啟's 《崇禎曆書》 (late Ming Dynasty) |Permission=Public Domain |other_vers

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