The Lateral
Supports
 | Bottom view of the primary mirror cell of the TNG, ready for testing of the 78 actuators and cabling. |
| The cell in the dome prior to its final set-up. One actuator is shown on the floor. |  |
 | The actuators are being inserted in the bottom apertures of the cell. |
| Top view of the primary mirror cell of the TNG, during tests on the 78 actuators on whose hemispheric heads M1 is positioned. |  |
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