Credit & Copyright: M. Colleen Gino   
   
Explanation:
Why would the dome of a telescopic observatory appear translucent red?     
   
As one of the telescopes of the    
Etscorn Observatory of    
New Mexico Tech    
waited to inspect small portions of the night sky, playful observers    
decided to make this unusual image.     
   
Tricks needed to create this    
seemingly impossible shot included    
opening the observatory dome slightly,    
using a red light to illuminate the inside of the dome,    
spinning the dome, and using a    
long exposure.     
   
The open slit in the dome then allowed the camera to incrementally    
image the inside of the observatory, including the telescope.     
   
A fortuitous break in the clouds allowed the stars of the    
Big Dipper    
asterism    
to shine through.   
   
   
   
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