NSO/GONG

Mercury Transit of 7 May 2003: Images from the Sites

Return to the GONG front page

View an animation of the transit.

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

Last view from El Teide Full composite image from El Teide
Udaipur, India
Total viewing time: 0516 UT to 1030 UT

Last image taken at 1017 (UT), May 7th, 2003

Last view from Udaipur Full composite image from Udaipur
Learmonth, Australia
Total viewing time: 0517 UT to 0906 UT (local sunset)

Last image taken at 0729 (UT), May 7th, 2003

Last view from Learmonth Full composite image from Learmonth

About the Images

Orientation for Mercury transit images 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
National Solar Observatory