Cat's Eye Nebula Diameter. The helix nebula, also known as the helix, ngc 7293, is a large planetary nebula (pn) located in the constellation aquarius.discovered by karl ludwig harding, probably before 1824, this object is one of the closest to the earth of all the bright planetary nebulae. The cat’s eye nebula, gas and dust cast off during a red giant star’s death, in a hubble space telescope photo released in 2008.
Nebula ini merupakan nebula paling terang di malam hari dengan diameter sudut dua kali lebih besar daripada diameter sudut bulan purnama. Namun kenyataannya, nebula orion tetap saja tidak nampak jelas di langit malam, apalagi dengan kondisi langit yang sudah tercemar oleh polusi udara maupun polusi cahaya. The cat's eye nebula (ngc 6543 or of cat eye nebula) with a diameter of 20 seconds of bow, is situated in the north pole of the ecliptic, this very brilliant global nebula, is situated in the constellation of the dragon.
In the center of the cat’s eye (the pupil if you will), there is a bright, hot star approximately 10,000 times as luminous as the sun.
As rough guide, the location is located in the constellation of pisces. The cat eye nebula, ngc 6543, is a mythical object from the deep sky of the northern hemisphere. The cat's eye nebula, also known as ngc 6543, or the pearl's light nebula by the xa'thins, is a planetary nebula it is very prominent in local history, and is even referenced in the terminus system's flag. Kabut mata kucing ditemukan pada 15 februari 1786 oleh william herschel.