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Astronomy-Links
bulletAstrotechniek, our sponsor: your best shot for telescopes, ccd-camera's, etc. Excellent service!!
bulletBaader Planetarium,  Everything for astronomy.
bulletRoyal Observatory, Brussels: http://www.astro.oma.be/
bulletDelta Scuti Network: http://www.astro.univie.ac.at/~dsn/
bulletSimulating eclipsing binaries: http://instruct1.cit.cornell.edu/courses/astro101/java/eclipse/eclipse.htm
bulletSetec Observatory: our friend C.W. Robertson in Kansas, USA
bulletCenter for Backyard Astrophysics: a good example of cooperation between professional astronomers and amateurs in variable star research. Fine job these guys are doing: http://cba.phys.columbia.edu/
bulletMember of the Center for Backyard Astrophysics is my good friend Tonny Vanmunster. You MUST have a look at his site: http://www.cbabelgium.com
bulletVereniging Voor Sterrenkunde, Belgium (Astronomical Association, Belgium): http://www.vvs.be
bulletInformation Bulletin on Variable Stars (IBVS): http://www.konkoly.hu/IBVS:
bulletMirametrics (MIRA AP software)
bulletOur Spanish friends from GEA: http://www.astrogea.org/VARIABLE/variables.htm
bulletPhilip Plait's site about BAD ASTRONOMY http://www.badastronomy.com

Double Star Links

Professional organisations and amateurs (or amateur- associations) performing scientific double star observations

bulletSociété Astronomique de France, Commission des Etoiles Doubles
bulletThe Double Star Library, IAU Commission 26 page
bulletRoyal Observatory, Uccle, Belgium, Double Star Page of Patricia Lampens
bulletThe Washington Double Star Catalogue
bulletMesures d'étoiles doubles, site of Sebastien Caille
bulletDouble star site of Florent Losse author of REDUC-software
bulletJournal of Double Star Observations a quarterly journal of amateur astronomy dedicated to the study of double and binary stars
bulletThe Webb Deep-Sky Society Double Star Section
bulletThe Double Star pages of Southern Astronomical Delight, containing a wealth of information and articles: Definition, Terminology, Classification, Star Colours, Discrepancies in Double Star Catalogues, etc.
bulletDouble Star pages of Brayebrook Observatory. Check also the Publications page !

Tools for Double Star observing:

bulletDawes Limit Calculator
bulletDouble Stars Free: a tool to interrogate the WDS and CCDM databases, created by Sebastien Caille
bulletThe Pickering Seeing Scale (website Damian Peach)
bulletAtlas of Double Stars, by Toshimi Taki

Lists for visual observations of Double Stars can be found here:

bulletThe Spirit of 33, an International Network of Double Star Observers
bulletThe Astronomical League Double Star Club
bullet Lookum Observatory, Double Star Section
bulletThe Saguaro Astronomy Club, Best Multiple Stars
bullet Eagle Creek Observatory, Double Star Lists (per constellation )
bulletOrbits of 150 Binaries on The Constellations website by Richard Dibon-Smith

Photography-Links
bulletCornelia & Ramon Doerr: http://www.doerr-naturbilder.de/
bulletHervé Sentucq: http://www.panoram-art.com/
bulletBertrand Clément: http://photospyrenees.com
bulletAstrophotography: check the site of Didier Keus, a Belgian astrophotographer who makes great narrow-band images !!
 

Other interesting links

bulletSwimming website: this site enables you to locate every public indoor swimming pool, all over the world!  http://www.swimmersguide.com

Places we've visited and can recommend:

bulletChateau de Paulignan (fantastic Bed and Breakfast in France, dept Aude, near Carcassonne.)
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Interesting references and readings:
bulletCCD Astronomy (Sky Publishing Corp) All 12 issues (spring 1994 - fall 1997) are worth reading!
bulletAstronomical CCD Observing and Reduction Techniques, Steve Howell, ASP Conference series, Vol 23