Astronomy

Astronomy(Priest, 2)
Ability: Intelligence
Modifier: ‐1
This proficiency gives the character an understanding of celestial mechanics for both standard and non‐standard systems. Inany system, the character may be able to determine the relative placement and future courses of celestial bodies (even variableorbits of comets and asteroids) by studying the overall system pattern. The smaller celestial body, the more difficult the taskbecomes. Phases of heavenly bodies are also easily determined.Characters with this proficiency may also oversee the construction and use all of the instruments related to this field, such asastrolabes, sextants, and even simple telescopes. Time and materials are required, and an unmodified proficiency check with a ‐5 penalty is required for success. Failure indicates that the object is flawed in some way and is useless.The character can also use this proficiency to determine which planets have intelligent creatures, civilizations, etc. This use ofthe proficiency may require preparation by the DM, since information regarding a new crystal sphere might be discoveredwhen the characters first enter it. Characters with this proficiency and the navigation (Land or Sea) proficiency gain a +1 bonusto all above ground navigation proficiency checks, as well as a +1 bonus to all astrology proficiency checks.