Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
September 11, 1998
You can help map
Early tomorrow morning
(Saturday, September 12) the Moon will occult, or pass in front of,
the bright star
Aldebaran as viewed from some Southern and Eastern areas
of the U.S. as well as regions in the Caribbean Sea,
Nova Scotia, Newfoundland, Mexico, and Central America.
disappear behind the bright edge of the third quarter
reappear behind the darkened edge.
Accurately timed home video camera recordings
from different locations
can be used to make improved maps of the height of the lunar terrain
at these occultation points.
the instructions on the
International Occultation Timing Association HomePage
which detail how to tape a familiar TV channel,
take your running camcorder outside to record the occultation,
and then return to tape a few more minutes of the TV channel.
(First, determine if the occultation will be visible from your location!)
You can then donate your tape by mailing it to the address given.
Leave yourself plenty of time
for a practice run and be sure to check the weather
before going to a lot of trouble!
This mosaic mapping the North polar region of the lunar surface was constructed from images recorded by the Galileo spacecraft in 1992.
Authors & editors:
NASA Technical Rep.: Jay Norris. Specific rights apply.
A service of: LHEA at NASA/ GSFC
&: Michigan Tech. U.