Video images of Moon, Mar 25, 1999

On March 25, 1999, one section of the Solar System Astronomy Lab class (Physics 236-86) went to the Observatory to observe the moon. They looked visually through several different telescopes, and took pictures with the video camera on the Autoscope 16" telescope. They later used these pictures to measure the heights of lunar mountains, and the depth of lunar craters.

The skies were clear, and the seeing fair. The telescope wobbled east-west with a period of about 2 to 4 seconds and an amplitude of -- a guess -- 4 arcseconds.

The moon was nine days old, at elongation 110 degrees from the sun, phase angle 68 degrees. The terminator had just crossed the middle of the lunar disk. We concentrated on areas near the terminator.

Here are the times at which the exposures were made:

I enhanced the pictures a bit with Photoshop's Unsharp Masking, using parameters of


The Montes Appenines.


The crater Eratosthenes.


The crater Tycho.


The walled plain Plato.


The Rupes Recta, or Straight Wall.