 |
First Quarter
Moon The dark circular area in the upper right is Mare Crisium (Sea of Crises), which is just to the right of Mare Tranquillitatis (Sea of Tranquility), site of the Apollo 11 landing in 1969. The apparent diameter of the moon is about 30 arc-minutes, or half a degree. |
| This image was
taken from our back yard in Kenmore around 9:00 pm on September 23, 2001.
530 mm focal length, f/5, area of the aperture reduced by a factor of 100 using a mask with a small hole in the center to prevent saturation of the CCD camera. Minimum exposure time for the ST-7E camera is 0.11 seconds. Separate exposures taken with red, green and blue filters. |