Draco constellation
Hubble's Color Toolbox: Cat's Eye Nebula - article showing the image composite process used by scientists to produce an image of the Cat's Eye Nebula.
HubbleSite - Cat's Eye Nebula
Hubble Probes the Complex History of a Dying Star - HubbleSite article about the Cat's Eye Nebula.
HubbleSite - Hubble Probes the Complex History of a Dying Star - 1/11/1995
NASA APOD - October 31, 1999: The Cat's Eye Nebula nasa apod
APOD: October 31, 1999 - The Cat's Eye Nebula
Chandra X-Ray Observatory Photo Album: NGC 6543 (Cat's Eye Nebula) harvard photo
Chandra :: Photo Album :: NGC 6543 (Cat's Eye Nebula) :: 08 Jan 01
The Deep Photographic Guide to the Constellations: Draco constellations draco
Draco - Constellations - Digital Images of the Sky
Sol Station data stars
Sigma Draconis
SEDS Messier pages: NGC 5866 messier
NGC 5866 / Messier 102 ?
SolStation entry stars
Struve 2398 AB
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It uses material from the Wikipedia articles :
Cat's Eye Nebula , Draco (constellation) , Sigma Draconis , Spindle Galaxy in Draco , Struve 2398 , .
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the Froola link list about "Draco constellation".