Caldwell catalogue
Videos
The Caldwell catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled by Patrick Moore as a complement to the Me
Montage of Caldwell Catalogue objects.
Cat's Eye Nebula
Videos
The Cat's Eye Nebula is a planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigate
Caldwell catalogue
…Galaxy 7,000 Draco 9.7 C4 NGC 7023 Iris Nebula Open Cluster and Nebula 1.4 Cepheus 7 C5 IC 342 Hidden Galaxy Spiral Galaxy 10,000 Camelopardalis 9 C6 NGC 6543 Cat's Eye Nebula Planetary Nebula 3 Draco 9 C7 NGC 2403 Spiral Galaxy 14,000 Camelopardalis 8.4 C8 NGC 559 Open Cluster 3.7 Cassiopeia 9.5 C9 Sh2-155…
Hubble Space Telescope image of Cat's Eye Nebula
Cat's Eye Nebula imaged by Euclid and the Hubble Space Telescope
An optical image of the nebula's surrounding halo
Composite image using optical images from the HST and X-ray data from the Chandra X-ray Observatory