|Description||You have studied the heavens extensively and can navigate by the stars.|
Under a starry sky, you can spend a full-round action to determine your location and direction. Make a TN 15 Sea-craft or Profession: Sailor test, adding your Wits bonus. (If you have an instrument to help you measure the position of the stars, add +2 to your test result.) Your estimate of your location is off by ten miles for every point by which your test result falls short of the TN. When estimating the optimal course to your destination, the distance you travel to reach your destination is increased by 5% for every point by which your test result falls short of the TN.
If you also have 2 or more ranks in a Lore skill that involves knowledge of the great powers of the world, you can call on the Lady of the Stars (Varda or Elbereth, though you may not know her by those names) to part a cloud cover just enough to let you briefly see a few stars you can use to navigate by. You can do this only once per night.
Additionally, this ability reduces your penalty for seeing in conditions of darkness by 2 points.