Help Aldebaran Map the Moon . ... Credit Copyright: F. B. Catala Explanation: Turn on your camcorder, go outside, and become an astronomer. ... This occultation is valuable because disappearance times from different locations can be used to map the height of the lunar terrain at the occultation points. You can help by clicking here , where a site will detail how to tape a familiar cable channel and then take your still-running camcorder outside to tape the occultation of Aldebaran by the Moon. ...