|
+--------------+-----------+------------+-------------+------------------+
| 2. Refractors. |
+--------------+-----------+------------+-------------+------------------+
|Palais de | | | Gautier, |Mounted as a |
|l'Optique, | 49.2 | 197 | 1900 |siderostat in |
|Paris | | | |connection with |
| | | | |a plane mirror 79 |
| | | | |inches across. |
+--------------+-----------+------------+-------------+------------------+
|Yerkes | 40 | 62 | Alvan G. | |
|Observatory | | | Clark, 1897 | |
+--------------+-----------+------------+-------------+------------------+
| | | | |For photographic |
|Lick | | | A. Clark and|purposes a |
|Observatory | 36 | 57.8 | Sons, 1888 |correcting lens is|
| | | | |available, of 33 |
| | | | |inches aperture, |
| | | | |47.8 feet focus. |
+--------------+-----------+------------+-------------+------------------+
| | | | |Mounted with a |
|Meudon | 32.5 | 55.2 | Henrys and |photographic |
|Observatory | | |Gautier, 1891|refractor of 24.4 |
| | | | |inches aperture. |
+--------------+-----------+------------+-------------+------------------+
| | | | |Photographic. |
|Astrophysical | | |Steinheil and|Mounted with a |
|Observatory, | 31.5 | 39.4 |Repsold, 1899|visual refractor |
|Potsdam | | | |20 inches in |
| | | | |aperture. |
+--------------+-----------+------------+-------------+------------------+
|Bischoffsheim | | | |Visual. Mounted |
|Observatory, | 30.3 | 52.6 | Henrys and |on Mont Gros,