Please visit these other sites of interest to the amateur astronomer: Plettstone Custom Telescopes   Large-aperture telescopes for the discriminating observer. 1stBase Collapsible Dobsonian Bases   Custom-made, lightweight and stable bases for Dobsonian telescopes. Compact Precision Telescopes   Custom-made, aluminum-framed Newtonians that collapse to half their operating length for ease of transport.  Astronomy-Mall.com   Links to over 70 companies, plus classified ads and much more. MWT Associates  24 years in astronomical tours, taking you to the very best astronomical sites with the highest potential of clear skies, best weather conditions, while you enjoy a first-class vacation. Astronomy Vacations by Mayhugh Travel  We specialize in vacations of an Astronomy Nature - this is all we do. TravelQuest International  Official tour company of SKY & TELESCOPE magazine, TravelQuest offers escorted astronomy tours to destinations around the world. Clear Sky Clocks   Observing conditions forecasts for the U.S. and Canada specifically intended for amateur astronomers. StarPartyGuy.com  Solar Lunches & Star Parties -- information on solar observing sessions and star parties in the San Francisco Bay Area. International Dark Sky Association "To preserve and protect the nighttime environment and our heritage of dark skies through quality outdoor lighting." QuasarChile - providing awesome astronomy adventures in the Atacama desert with the darkest and clearest skies on Earth.