hmmm...  ... talking about astronomy maybe this is the best option to look the stars in details... in reality this is a big project called "stellarium"  in the beggining stellarium work only in gnu/linux but since a time ago is avaible in windows and mac... with stellarium you can watch the stars in a almost perfect simulation.. since the grass in a phoetic scene or since a virtual telecospe, is almost exact and powerful... perfect to the astronomy hobbie days...

   ... this is a nice program... maybe the best in datas to novices..stellarium works as  in a planetarium projectors. do you need send the coordinates and "presto". 

please enjoy the power of this open source tool...  the basic catalogue have 600.000 stars and the extra catalogues  210 millons of stars    , a powerful zoom and realistic 3d images, pictures and a lot of info... 

http://www.stellarium.org/

check this video.. is beatiful...
http://www.youtube.com/watch?v=mO-JolBTouU&feature=related

and this is a moon eclipse of 28 August 2007 in Stellairum (virtual location singapore) : http://www.youtube.com/watch?v=Nksu2MnFRX4&feature=related






Lisa M.Simpson and mr Andreas... enjoy please ,  this is the spirit of a freeware (in this example of a open source software)...the correct word is "libre"! 

see ya laters...

hey sounds nice! Thanks by the info Mr. Andreas

*downloading, this is perfect to my collegue of science...