Items Opening a new window at OSO , a receiver covering 70 - 87 GHz

The Onsala national facility's mission in astronomy is to support Swedish astronomers' access to telescopes operating between sub-millmetre and decametre wavelengths (a range of 100 000). This broad mission is illustrated in the articles in this newsletter, which feature plans for the deployment of a new sub-millimetre (Band 9) receiver for APEX, together with a report on the first SKA key science meeting held in Stockholm. The SKA meeting discussed the future breakthrough science to be done at centimetre and metre wavelengths. OSO accomplishes its mission both by contributing to specialised instruments (APEX, 20 m, VLBI, LOFAR), and also to the largest internat ional projects (ALMA and SKA). The technology needed for these large international projects the Band 5 receivers delivered from OSO to ALMA are one example and much of their user support needs are provided by national radio observatories around the world. OSO is proud to provide the Swedish contribution to designing, constructing and operating these international telescopes.