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STScI will be down completely for electrical work from 2:00 PM Friday, 2 December – 6:00 AM Monday, 5 December, 2016. Mail will be queued and delivered after the work is completed, but there may be a delay. DADS and data processing won't be up until some time Monday morning. Our apologies for the inconvenience.

Please take a very short 6 question survey found on the front page of the MAST Discovery Portal.


  MAST made extensive use of the TUES pages from the Institute for Astronomy and Astrophysics Tübingen (IAAT) at the University of Tübingen in Tübingen, Germany. Special thanks go to Jürgen Barnstedt from the TUES project for providing software, data, numerous documents and answers to our almost infinite number of questions.