Credit & Copyright: Cenk E. Tezel and  
Tunç Tezel  
(TWAN)   
 
Explanation:
If you went outside at exactly the same time every day and took a  
picture that included the Sun, how would the Sun's position change?    
  
With great planning  
and effort, such a  
series of images can be taken.    
  
The figure-8 path the Sun follows over  
the course of a year  
is called an analemma.    
  
Yesterday, the  
Winter Solstice  
day in Earth's northern hemisphere, the Sun appeared at the bottom of the analemma.  
  
Analemmas created from different latitudes would appear   
at least slightly different, as well as analemmas created at a different time each day.  
  
With even greater planning and effort,  
the series can include a  
total eclipse of the Sun as one of the images.  
  
Pictured is such a total solar eclipse  
analemma or Tutulemma -  
a term coined by the photographers based on the   
Turkish word for eclipse.  
  
The above composite image sequence was recorded from  
Turkey starting  
in 2005.  
  
The base image for the sequence is from the  
total phase of a solar eclipse as viewed  
from Side,  
Turkey on 2006 March 29.  
  
Venus was also visible during totality, toward the lower right.  
  
  
    
 Budget Universe:   
Free APOD 2014 Calendar in PDF format 
  
 Authors & editors: 
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official:  Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
  