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| Herschel Telescope Testing |
| The last two weeks have seen several testing activities around the Herschel telescope flight model in the cleanroom facilities at ESTEC. On 4 and 5 February the M1/M2 distance measurements of the telescope was performed. These M1/M2 measurements are to verify the optomechanical stability of the telescope under ambient conditions before launch. They are performed before and after significant mechanical and environmental testing, transport and handling activities of the telescope. |
| Date: 18 Feb 2008 |
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| Herschel Telescope Flight Model at ESTEC |
| The Herschel telescope's primary mirror is the largest mirror ever built for space. It is made out of 12 silicon carbide (SiC) petals brazed together and coated with a thin aluminium reflective layer. The SiC provides a rigid but lightweight structure with the telescope mass totalling at about 320 kg. |
| Date: 01 Feb 2008 |
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