Noctua (Latin: owl) was a constellation near the tail of Hydra in the southern celestial hemisphere, but is no longer recognized. [1] . It was introduced by Alexander Jamieson in his 1822 work, A Celestial Atlas, and appeared in a derived collection of illustrated cards, Urania's Mirror. [2] .

2025年3月29日 · The obsolete constellation Noctua the Owl is a southern constellation bordering Libra, Hydra and Centaurus. Noctua was introduced by Alexander Jamieson in 1822, and its stars now belong to Hydra and Libra .

The Southern Owl Nebula (PLN 283+25.1, ESO 378-1) is a planetary nebula located in the constellation Hydra. The nebula lies at a distance of 2,030 light years from Earth. It is named so because of its resemblance to the Owl Nebula in Ursa Major. [2] The nebula is notably symmetric, round, and has a diameter of approximately four light-years ...

2011年5月4日 · The star constellation of Hydra, a giant celestial snake, is slithering into view in our current night sky this spring.

Noctua (Latin: owl) was a constellation near the tail of Hydra in the southern celestial hemisphere, but is no longer recognized. It was introduced by Alexander Jamieson in his 1822 work, A Celestial Atlas, and appeared in a derived collection of illustrated cards, Urania's Mirror.

Striking star chart, marvelously engraved and delicately colored. Shows the featured constellations in color with neighboring stars and constellations without color. Jamieson's work is one of the finest of it's kind in the early 19th century.

Located between: Hydra, Turdus Solitarius. Urania's Mirror (1825) card: Hydra, Crater, Corvus, Sextans, Noctua, Felis, Antla Pneumatica.

2018年5月10日 · This is the story of how a little space in the heavens became a bird and, after hopping across several maps, transformed into Noctua, the night owl. Noctua began life as a space in the heavens,...

Based on Jamieson's designs, this set of star chart cards contained punched holes, enabling the user to hold them up to the light to see the pattern of the stars. Card #32 showed Hydra with an owl sitting on its tail. The owl replaced a thrush, Turdus Solitarius, which had been perched on the water serpent since 1776. Neither bird has survived ...

Hydra the Water Snake is the largest and longest of the constellations, stretching from Cancer to Libra. Several constellations and asterisms ride on its back; from head to tail they are Sextans the Sextant, Crater the Cup, Corvus the Crow, and Noctua the Owl. Hydra's brightest star is Alphard, which has an orangish tint.