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  2. Bortle scale - Wikipedia

    en.wikipedia.org/wiki/Bortle_scale

    The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution .

  3. Boötes - Wikipedia

    en.wikipedia.org/wiki/Boötes

    Boötes is a constellation bordered by Virgo to the south, Coma Berenices and Canes Venatici to the west, Ursa Major to the northwest, Draco to the northeast, and Hercules, Corona Borealis and Serpens Caput to the east. The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Boo". [18]

  4. Psi Crateris - Wikipedia

    en.wikipedia.org/wiki/Psi_Crateris

    Psi Crateris, Latinized from ψ Crateris, is the Bayer designation for a visual binary [8] star system in the southern constellation of Crater. It is faintly visible to the naked eye with an apparent visual magnitude of 6.13. [2] According to the Bortle scale, it requires dark suburban or rural skies to view

  5. John E. Bortle - Wikipedia

    en.wikipedia.org/wiki/John_E._Bortle

    John E. Bortle is an American amateur astronomer. He is best known for creating the Bortle scale to quantify the darkness of the night sky. Bortle has made a special study of comets. He has recorded thousands of observations relating to more than 300 comets. From 1977 until 1994 he authored the monthly '"Comet Digest" in Sky and Telescope magazine.

  6. 65 Arietis - Wikipedia

    en.wikipedia.org/wiki/65_Arietis

    65 Arietis is a star in the northern constellation of Aries, located near Tau Arietis. 65 Arietis, abbreviated '65 Ari', is the Flamsteed designation.It has an apparent visual magnitude of 6.07, [7] which, according to the Bortle Dark-Sky Scale, means it is faintly visible to the naked eye when viewed from dark suburban skies.

  7. HD 194244 - Wikipedia

    en.wikipedia.org/wiki/HD_194244

    HD 194244 is a variable Be star [7] in the equatorial constellation of Aquila. With an apparent magnitude of 6.14, according to the Bortle scale it is faintly visible to the naked eye from rural skies on a dark night.

  8. Spectacular events are happening right above your head. Here ...

    www.aol.com/spectacular-events-happening-above...

    The most prominent meteor showers, occurring on approximately the same dates every year, are the Perseids, named for the constellation Perseus and peaking on the night of August 12-13; the ...

  9. Theta Apodis - Wikipedia

    en.wikipedia.org/wiki/Theta_Apodis

    Theta Apodis (θ Apodis, θ Aps) is a variable star in the southern circumpolar constellation of Apus.It is a variable star with an apparent visual magnitude range of 4.65 to 6.20, [3] which, according to the Bortle Dark-Sky Scale, means it is a faint star but visible to the naked eye from dark suburban skies.