question: What German-Dutch spectacle-maker associated with Jacob Metius is associated with the invention of the telescope?
answer: Hans Lippershey
context: Title: Orchard Hill Observatory
  Passage: The Orchard Hill Observatory is an astronomical observatory located at the highest point on the University of Massachusetts Amherst campus.  Constructed in 1965, the observatory is a red brick building with a 16 inch Cassegrain reflector optical telescope.  It is used for several community events and is regularly open for public viewing on Thursday nights.  Originally the observatory was home to a 20” telescope, given to the department by an avid amateur who lived in central Massachusetts.  It was a 1/10 scale model (loosely) of a larger 200” scope.  Eventually, a crack was spotted during one of the re-aluminizings of the 20” mirror and the scope was no more.  In the meantime, the department had been granted money associated with its move from Hasbrouck to the Grad Research Tower to buy a small telescope and put in on top of the GRC.  The GRC had a small "isolation" pad built on its roof, which was supposed to be a mount for the scope, which could be accessed via a small open elevator.  However, the GRC had terrible noise and gross vibration problems.  The isolation pad never worked and there were too many safety concerns about using the roof of the building for observing.  A 16" telescope was later bought from Competition Associates (a racing car company).  That scope arrived in1976 but because of the problems with using the top of the GRC, the scope was never mounted there.  In fact, it sat in the basement of Hasbrouck for perhaps 10 years, becoming known as the "Subterranean Telescope.”  This situation finally led to the 20" being dissembled and the 16" scope being moved to Orchard Hill and installed in the dome there.  The 16" was a major improvement in usability.  As to what happened to the 20", the mirror may have been stored in the Astronomy Research Facility but the drive was most likely not kept.
  Title: Hans Lippershey
  Passage: Hans Lippershey (1570 – buried 29 September 1619), also known as Johann Lippershey or Lipperhey, was a German-Dutch spectacle-maker.  He is commonly associated with the invention of the telescope, because he was the first one who tried to obtain a patent for it.  It is however unclear if he was the first one to build a telescope.
  Title: Jacob Metius
  Passage: Jacob (Jacobus; sometimes James) Metius (after 1571–1624/1631) was a Dutch instrument-maker and a specialist in grinding lenses.  He was born and died in Alkmaar and was the brother of Adriaan Adriaanszoon (simply called Metius).  He is one of three people associated with the invention of the telescope, the other two being Hans Lippershey and Zacharias Janssen.  Not much of him is known besides his 1608 patent application for the invention.  He died in Alkmaar between 1624 and 1631.  Metius may have made many inventions but kept them secret.  Before his death he destroyed them all to prevent anyone else from claiming them.
citations: Hans Lippershey Jacob Metius