|
+---------------------+------------+-------------+---------------------+

TABLE V.

LIST OF GREAT TELESCOPES.

1. Reflectors--A. Metallic Specula.
+--------------+-----------+------------+-------------+------------------+
| Locality. |Aperture in|Focal Length| Constructor.| Remarks. |
| | Inches. | in Feet. | | |
+--------------+-----------+------------+-------------+------------------+
|Birr Castle, | | | Third Earl | |
|Parsonstown, | 72 | 54 | of Rosse, |Newtonian. |
|Ireland | | | 1845 | |
+--------------+-----------+------------+-------------+------------------+
|Melbourne | 48 | 28 | T. Grubb, |Cassegrain. |
|Observatory | | | 1870 | |
+--------------+-----------+------------+-------------+------------------+
| | | | Third Earl |Newtonian. |
|Birr Castle | 36 | -- | of Rosse, |Remounted |
| | | | 1839 |equatoreally 1876.|
+--------------+-----------+------------+-------------+------------------+
| | | | William |Newtonian. |
|Royal | | | Lassell, |Presented |
|Observatory | 24 | 20 | 1846 |by the Missess |
|Greenwich | | | |Lassell to the |
| | | | |Royal Observatory |
+--------------+-----------+------------+-------------+------------------+
| B. Silvered Glass Mirrors. |
+--------------+-----------+------------+-------------+------------------+
|Ealing, near | 60 | 27 |A. A. Common,|Newtonian. |
|London | | | 1891 | |
+--------------+-----------+------------+-------------+------------------+
| | | |G. W. Richey,|Can be employed |
|Yerkes | 60 | 25 | 1902 |at choice as a |
|Observatory | | | |Coude