以前的只有行星和一些簡單的星

現在多了星圖

可來此抓

http://palmaddict.typepad.com/palmaddicts/2008/09/astroinfo-by-pr.html

或到 
http://www.freewarepalm.com/astronomy/astroinfobypruss.shtml

現在點solar system　　，　會自己跳到星圖　顯示資料
zoom in　還看到土星　　。。。進步不少




AstroInfo by Pruss is something that is free and looks pretty interesting. "AstroInfo is a full-featured sky chart / planetarium application for amateur astronomers - or just for people who want to check the sunset time or see where Jupiter is.
Here are some key features of "AstroInfo":
Plot planets, the sun, the moon, stars (over 860,000 stars included, with 99% complete coverage up to magnitude 11), deep sky objects (includes Messier, NGC, IC, Bennett, Caldwell, Collinder and sci.astro.amateur catalogs) and constellations.
Zoom in and out, and move around.
Real-time or accelerated display for the present time, or a past or future time.
Rise, set and transit times for sun, moon, planets, stars and deep sky objects.