Night Observer - www page
http://www.astrojawil.pl/no.htm
AstroJaWil - english software
http://www.astrojawil.pl/astrojawil_english.htm
Janusz Wiland - www page
http://www.astrojawil.pl
HEAVENS - ABOVE
http://www.heavens-above.com
Google MAPS
http://www.maps.google.com
Moon high resolution
http://wms.lroc.asu.edu/lroc_browse/view/wac_nearside
Astronomy Picture of the Day
http://apod.nasa.gov/apod/astropix.html
NASA - Eclispes
http://eclipse.gsfc.nasa.gov/eclipse.html
SKY and Telescope
http://www.skyandtelescope.com/
IOTA
http://www.occultations.org/