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Month: August 2012
Home 2012 August

Month: August 2012

Cleaning the 3.5m mirror of NTT-ESO

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That’s an impressive image of how to clean the main, 3.54m diameter, mirror of the New Technology Telescope (NTT) on La Silla. “This very delicate process is performed using a natural sponge, soft soap and distilled water”, as stated at ESO’s site.  

grigoris August 30, 2012 June 24, 2015 Astronomy
Continue reading"Cleaning the 3.5m mirror of NTT-ESO"

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