Spirograph Nebula

==Overview==
The Spirograph Nebula is an emission planetary nebula located in the constellation Lepus. It is estimated that the distance of the Spirograph Nebula from Earth is 2938.02 light-years, although this is rather uncertain. The nebula has a diameter of about 1.96 light-years and an apparent magnitude of about 9ᵐ60. 
It got its name from its complicated patterns, which resemble those made by the similarly named geometric drawing tool called a spirograph. It is incomprehensible how these complex patterns formed, and researchers have spent more than a decade attempting to explain why we are still not able to understand this formation to this day.
The nebulae have been revealed to be composed of a total of three centered rings, rays, or radial filaments, two bigger detached haloes, and a shell-like structure. The main nebula is slightly off-centered when compared to the outer elliptical halo.https://arxiv.org/abs/1204.5816 The Spirograph Nebula was discovered by Scottish-American astronomer Williamina Fleming on March 26, 1891. She worked for Edward Pickering, which John L. E. Dreyer erroneously credited as the discovery in his 1895 "Index Catalogue."https://ui.adsabs.harvard.edu/abs/1895MmRAS..51..185D/abstract
==Gallery==
File:Spirograph Nebula-001.png
File:Spirograph Nebula-002.png
File:Spirograph Nebula-003.png
File:Spirograph Nebula-004.png
File:Spirograph Nebula-005.png
File:Spirograph Nebula-006.png
File:Spirograph Nebula-007.png
File:Spirograph Nebula-008.png
Category:Real objects
Category:Objects
Category:Nebulae