Author Keith Baker, Adam Bank, Chris Jones, Scott Reeves, and Elton Robb
Publish date 2002
Source Advanced Race Guide
Star charts include large maps cross-referenced with thick almanacs filled with tables detailing every documented star’s position relative to the earth, to each other, and to interstices of the celestial planes. Because the science of measuring the movements of the stars is imperfect, even the very best charts quickly become obsolete. A standard star chart costs 75gp.
Many half-elves live in large cities or communities where they find it difficult to commune with nature. While some go on long sojourns to the wilderness, others spend their evenings on high, lonely rooftops, gazing at the stars. These lonely souls use star charts to track the movement of the stars and other celestial bodies. Anyone referencing one of these charts on a clear night can attempt a DC 20 Knowledge (geography) check to determine her approximate location and the month. In addition, these charts grant a +2 circumstance bonus on Survival checks made to avoid getting lost at night with a clear sky.
A masterwork star chart costs 200gp and consists of at least 6 maps and a dozen thick tomes of data. For one stellar season after its creation (the next solstice or equinox, whichever comes first), a masterwork star chart grants a +2 circumstance bonus to all Astrology checks. When the season ends, the circumstance bonus expires, although the chart is still useful in the observatory.