http://www.amateurastronomy.com/

www.anoa.pt

http://www1.tecs.com/oldscope/

www.apaa.online.pt

http://www.ultranet.com/~assne/

http://sweet.ua.pt/~fisua

Association of Amateur Variable Stars Observers

http://www.aavso.org/

www.Astrolista.net

www.CA2000pt.com

www.grupopolaris.hpg.ig.com.br

www.proxima-centauri.pt.vu

http://www.darksky.org/ida/ida_2/index.html

http://www.evansville.net/~slk/lunascan.html

NGC - IC Project Home Page

http://www.ngcic.org/

www.planeta.clix.pt/nastab/

www.scopereviews.com

sct-user Mailing List Home Page!

http://members.aol.com/RMOLLISE/index4.html

http://www.aac.uc.pt/~sac/

http://www.egroups.com/group/setiathomept

Students for the Exploration and Development of Space (SEDS)

http://www.seds.org/

http://www.tass-survey.org/

http://www.observers.org/

http://www.astropage.homepage.com/

http://7mares.terravista.pt/tps_portugal/

http://www.robosky.com/

http://www.shallowsky.com/shallow-sky.html

http://www.sno.phy.queensu.ca/