Where will this be viewable?
The Bahamas.. per the article. :-)
It’s blasting off from a Cape Canaveral pad..
http://www.nasa.gov/mission_pages/dawn/launch/index.html
Spacecraft: Dawn
Launch Vehicle: Delta II
Launch Location: Cape Canaveral Air Force Station, Florida
Launch Pad: Space Launch Complex 17-B
Launch Date: September 27
Launch Window: 7:20 a.m. 7:49 a.m. EDT