The images below show the final individual frame from each location on the left side, and the final composite image from that site on the right. Mercury is at the top of the image; the dark spot in the middle of the solar disk is a sunspot (which is slightly smeared in the composite images from the compositing process).
|GONG Images of Mercury Transit occurring May 7, 2003|
|Site Location||Last Image *||Composite Image *|
El Teide, Canary Islands, Spain|
Total viewing time: 0713 UT (local sunrise) to 1031 UT
Last image taken at 1046 (UT), May 7th, 2003
Total viewing time: 0516 UT to 1030 UT
Last image taken at 1017 (UT), May 7th, 2003
Total viewing time: 0517 UT to 0906 UT (local sunset)
Last image taken at 0729 (UT), May 7th, 2003
Observations begin when the Sun reaches 10 degrees above the local horizon (morning) and end when the Sun goes below 10 degrees above the local horizon (evening).
Orientation of the images is as shown; please note that these are solar directions, not terrestrial (i.e., they are rotated counter-clockwise by 23° compared to the terrestrial viewpoint).
The composite image is a super-position of all of the images. The path of Mercury across the solar disk is seen as a series of small dark circles. Active regions get smeared as the Sun's rotation carries them from east to west across the visible solar disk.
Ruth A. Kneale | May 13, 2003