Mounted image 022: VLT Unit Telescope 1, Antu, venting before start-up

A wide-angle view inside the telescope enclosure. The telescope is Antu, Unit Telescope 1, with the ISAAC instrument at the Nasmyth A focus. Each night around sunset, technicians open the enclosure and prepare the telescope and its instruments for the night’s observation run.


ESO/G.Hüdepohl (

About the Mounted Image

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Release date:15 March 2011, 17:13
Dimensions:50 cm (W) x 37.13 cm (H) x 1 cm (D)
Related archive image:eso-paranal-16

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