A Tour of Mars Through the Eyepiece

  • Peter Grego
Part of the Astronomers' Observing Guides book series (OBSERVING)


We have the nineteenth century astronomers Wilhelm Beer and Johann Mädler to thank for establishing the prime meridian of Mars. They defined a permanent reference point on the planet’s surface which was used for determining an accurate value for the planet’s rotation and to construct accurate maps of Mars. This reference point, centered on a small feature we now know as Sinus Meridiani (Meridiani Planum), is still used today as zero longitude.


Southern Edge Dark Patch Small Telescope Bright Patch Prime Meridian 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Peter Grego
    • 1
  1. 1.CornwallUK

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