[PAR] [TLE] Zacharias Janssen [SEP] Zacharias Janssen (also Zacharias Jansen or Sacharias Jansen) (1585 – pre-1632) was a Dutch spectacle-maker from Middelburg associated with the invention of the first optical telescope.  Janssen is sometimes also credited for inventing the first truly compound microscope.  However, the origin of the microscope, just like the origin of the telescope, is a matter of debate. [PAR] [TLE] Jansen (crater) [SEP] Jansen is a lunar crater in the north part of the Mare Tranquillitatis, named after Zacharias Janssen.  It is located to the east-southeast of the crater Plinius.  The rim of Jansen is low and narrow, with a notch along the western edge.  The interior is relatively level, which may indicate it has been covered by lava.  To the south-southwest a small but prominent crater lies on the crater floor, halfway between the center and the rim, further southeast is a small but prominent crater named Sinas.
[PAR] [TLE] Zacharias Janssen [ SEP ] Zacharias Janssen ( also Zacharias Jansen or Sacharias Jansen ) ( 1585 – pre-1632 ) was a Dutch spectacle - maker from Middelburg associated with the invention of the first optical telescope . Janssen is sometimes also credited for inventing the first truly compound microscope . However , the origin of the microscope , just like the origin of the telescope , is a matter of debate . [PAR] [TLE] Jansen ( crater ) [ SEP ] Jansen is a lunar crater in the north part of the Mare Tranquillitatis , named after Zacharias Janssen . It is located to the east - southeast of the crater Plinius . The rim of Jansen is low and narrow , with a notch along the western edge . The interior is relatively level , which may indicate it has been covered by lava . To the south - southwest a small but prominent crater lies on the crater floor , halfway between the center and the rim , further southeast is a small but prominent crater named Sinas .
Jansen is a lunar crater that was named after what Dutch spectacle-maker from Middleburg?
Jansen is a lunar crater that was named after what Dutch spectacle - maker from Middleburg ?
Zacharias Janssen
Zacharias Janssen