Deep Sky Colors - Astrophotography by Rogelio Bernal Andreo
Astronomical photography, Digital Astrophotography tips and techniques
http://blog.deepskycolors.com/tools.html - Details

New Jersey Stargazer
Personal adventure into the field of Astrophotography using webcams
http://njstargazer.org/ - Details

Stargazers Lounge - Astronomy Forum
Astronomy forum - For all astronomers, young and old.
http://stargazerslounge.com/ - Details

MILWAUKEE ASTRONOMICAL SOCIETY
The Milwaukee Astronomical Society has a respectable antiquity, dating back to 1932. Among its early members were none other than Walter Scott Houston and Ed Halbach. MAS members are loyal, many retain their membership even when they move out of state. We even have members living in Colorado and Arizona!
http://www.milwaukeeastro.org/ - Details

Astronomical software clock MAXCLOCK
The high-precision astronomical (software) clock displays various sidereal and solar time signals (for Greenwich and other selectable site), equation of equinoxes, Julian dates in UT1 and ET, Delta-T, Sun and Moon in aequatorial and ecliptic coordinates (milliarcsec-accuracy), and issues announcements for solstices, equinoxes, and Moon phases.
http://www.umark.de - Details

cio of universal concepts
free vertual telescope
http://www.stellarium.org - Details

MicroObservatory
• Optimize an image's brightness/contrast automatically, by either linear or logarithmic scaling. • Colorize images using several false color tables. • Invert an image's color table. • Increase image contrast and detail using "sharpen" filter. • Reduce the noise in an image. • Manipulate full screen magnification. • Show image information for individual pixels by cursor placement.
http://mo-www.harvard.edu/MicroObservatoryImage/ - Details

Observation Manager
Observation Manager is a free and open logbook for (amateur-) astronomical observations. It's written in pure Java and runs on every plattform supporting Java 1.4 or higher. All logbook entries made in Observation Manager are stored in the free and open COMAST XML Schema.
http://observation.sourceforge.net/en/ - Details

Little Windows Helpers
Yes, it is possible to write small Windows programs - but who cares? If you do, have a look at these programs written in PureBasic. They do not come with an installation program, and they do not make any entries in the Windows Registry. Just unzip the files to a program folder, and make a shortcut.
http://home.mnet-online.de/horst.muc/win.htm - Details

Amateur Astronomy
1369 manually selected sites about Amateur Astronomy
http://www.cbel.com/amateur_astronomy/ - Details

Gary Kronk's Comet Page

http://cometography.com/ - Details

Tsunami Hazard from Sub-Kilometer Impacts

http://www.nai.arc.nasa.gov/impact/news_detail.cfm?ID=123 - Details

Tsunami Risks From Asteroid Impacts - New Scientist
Simulations reveal the global risks of the killer waves created when asteroids smash into Earth's oceans – size matters, but impact location is crucial
http://space.newscientist.com/article/dn9160-tsunami-risk-of-asteroid-strikes-revealed.html - Details

Impact Geology, Chemistry & Physics

http://palaeo.gly.bris.ac.uk/Communication/Brana/impact.html - Details

SL-9 The Impact - NASA

http://nssdc.gsfc.nasa.gov/planetary/impact.html - Details

Shoemaker - Levy 9 Post Impact Q&A

http://www.isc.tamu.edu/~astro/sl9/cometfaq2.html - Details

Comet Shoemaker - Levy 9 Impact Homepage (JPL)

http://www2.jpl.nasa.gov/sl9/ - Details

Shoemaker - Levy 9 Jupiter Impact
Fragments of comet P/Shoemaker-Levy 9 collided with Jupiter on July 16-22, 1994. The results were spectacular.
http://www.solarviews.com/eng/impact.htm - Details

Simulation Of Comet Impact With Earth
Real (not reel) deep impacts: Sandia scientists predict what an asteroid strike would look like, really.
http://www.sandia.gov/media/comethit.htm - Details

Catastrophism
Catastrophism: Pib's interest in astronomical catastrophism, especially during the Holocene
http://www.pibburns.com/catastro.htm - Details