The Nebula, Formally Cataloged Ngc 6543, Is Every Bit As Inscrutable As The J.r.r.
The diameter of the cats eye nebula is about 1,000 light years across. Each 'ring' is actually the edge of a spherical bubble seen. Hubble space telescope image taken in 2004.
A Cat's Eyes Are Specifically Designed To Register The Slightest Movement.
How big is the cats eye nebula? Its central pnn is a hot dying star with a temperature of 80,000 kelvin. A cat's pupil is elliptical (vertical) when it's bright, or large and round when it's dark.
The Cat's Eye Nebula (Ngc 6543) Is A Planetary Nebula In The Constellation Of Draco.
This image reveals new details of the cat’s eye nebula (catalogued as ngc 6543), one of the most complex planetary nebulae ever seen. The cat's eye nebula, also known as ngc 6543, is a visual fossil record of the dynamics and late evolution of a dying star. The star in the white dwarf stage is clearly visible in the center of the nebula, the central part of which has a diameter of only 20 arc seconds, which is tiny, one of the reasons why it is relatively little imagined.
This Halo Extends Over A Diameter Of About 300 Arcseconds (5.
Declination +66° 37′ 59.52″ constellation: 17 h 58 m 33.4 s: Apparent magnitude (v) +8.9 :
Image Taken By The Hubble Space Telescope, 2002, 1.2 H Exposure Time [ 247 ]
The pupil is very sensitive, and expands or retracts dramatically, depending on the environment. Ngc 6543 is located almost at the north pole of earth's orbit and is therefore also known by the older name of the ecliptic north pole nebula. Tt was discovered by william herschel in 1786.
