Celestial Atlas: Obsolete Constellations
Solarium: The Sundial
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     Solarium is an obsolete constellation created by Alexander Jamieson in his Celestial Atlas of 1822 as a replacement for Reticulum. It was included in Elijah Burritt's 1835 Atlas of the Heavens (an eight-page supplement to his 1833 Geography of the Heavens), and as a result of the popularity of Burritt's atlas (it was one of the most successful atlases ever published in America, pored over by nearly two generations of Americans) is sometimes attributed to him. Astronomers rejected the constellation, preferring to continue to use Reticulum for the region, and once later editions of Burritt's Geography abandoned any reference to Solarium, it became merely a historical oddity.

Historical Map of Solarium
From Burritt's 1835 Atlas of the Heavens (Image Credits: University of Michigan Digital Library)
Solarium, as shown in Elijah Burritt's 1835 Atlas of the Heavens
Celestial Atlas: Obsolete Constellations
Solarium: The Sundial