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Based upon this information, the constellations were catalogued at 125 ± 55 BC. This evidence indicates that the star catalogue of the 2nd-century BC Greek astronomer Hipparchus was used. [12] A Roman era example of a graphical representation of the night sky is the Ptolemaic Egyptian Dendera zodiac, dating from 50 BC.
Paranal Observatory nights. [3] The concept of noctcaelador tackles the aesthetic perception of the night sky. [4]Depending on local sky cloud cover, pollution, humidity, and light pollution levels, the stars visible to the unaided naked eye appear as hundreds, thousands or tens of thousands of white pinpoints of light in an otherwise near black sky together with some faint nebulae or clouds ...
Stargazing apps are brilliant for spotting constellations in the night sky, looking at the planets, identifying stars, and learning about astronomy.
The International Astronomical Union (IAU) designates 88 constellations. [1] In the table below, they are listed by geographical visibility according to latitude as seen from Earth, as well as the best months for viewing the constellations at 21:00 (9 p.m.).
Falling diamond dust (Inari, Finland) Diamond dust is similar to fog in that it is a cloud based at the surface; however, it differs from fog in two main ways. Generally fog refers to a cloud composed of liquid water (the term ice fog usually refers to a fog that formed as liquid water and then froze, and frequently seems to occur in valleys with airborne pollution such as Fairbanks, Alaska ...
Covering 545.4 square degrees and 1.322% of the night sky, it ranks 28th of the 88 constellations in size, [3] surpassing better known constellations such as Gemini. [4] The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Lyn". [ 5 ]
IAU designated constellations in equirectangular projection (epoch B1875.0) In contemporary astronomy, 88 constellations are recognized by the International Astronomical Union (IAU). [1] Each constellation is a region of the sky bordered by arcs of right ascension and declination, together covering the entire celestial sphere. Their boundaries ...
There are four bright stars in Chamaeleon that form a compact diamond-shape approximately 10 degrees from the south celestial pole and about 15 degrees south of Acrux, along the axis formed by Acrux and Gamma Crucis. Alpha Chamaeleontis is a white-hued star of magnitude 4.1, 63 light-years from Earth.
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