06 May 2010 . Optical Surfaces Ltd. has announced the delivery, to the Niels Bohr Institute, of a pair of ultra high precison counter-rotating doublet prisms for the Atmospheric Dispersion Corrector (ADC) - a key element for the instruments deployed by the SONG project.
Reflecting on their choice of supplier, Per Kjærgaard, SONG project Manager, commented: 'Optical Surfaces Ltd was selected to produce the critical ADC prism doublet because of their impressive track record in preparing high performance optical systems for telescope and space projects'.
Using proprietary techniques, Optical Surfaces'craftsmen produced two identical glass prisms of 45mm diameter with a surface accuracy of lambda/20 p-v and microroughness of better than 1nm rms to provide the diffraction-limited performance required. |
