Butterfly Nebula (IC 1318B)

Name in the directory:IC_1318B
Category:Nebula
Right Ascension:20h 27m 33.36s
Declination:+39° 56′ 0.60″
Total Exposure:1 час 40 минут
Number of Frames:10
Link to FITS files:Download
  • H100 minutes (10 frames)

The Butterfly Nebula (IC 1318B) is part of the emission nebula IC 1318, also known as the Butterfly Nebula, located in the constellation Cygnus. This object is approximately 4,900 light-years from Earth and spans 100 light-years. IC 1318 is divided into three parts: IC 1318A (outside the image, at the top), IC 1318B (upper right of the image), and IC 1318C (lower left of the image). The areas separating IC 1318B and IC 1318C are the dark cloud LDN 88, which is about 20 light-years wide.

Structure and Features

The IC 1318B nebula is part of a larger region that can be seen as two glowing wings separated by a long dark lane of dust. These "wings" give the nebula its popular name, the Butterfly Nebula. At the center of this amazing HII region (hydrogen ionized region) is the supergiant star Gamma Cygni, also known as Sadr, which is the bright source of radiation in this region.

Stars and Gas Clouds

Within the IC 1318B nebula is a complex array of stars, gas clouds, and glowing nebulae located along the plane of the Milky Way. The energy emanating from these stars ionizes the gas, creating the bright regions of radiation that can be seen in this region. The Butterfly Nebula and its surrounding stars form a spectacular image spanning 3 degrees in the sky, or about six full moons.

Location and Size

The star Sadr is at the center of this object and is considered one of the brightest stars in the constellation Cygnus. It is about 1,800 light-years away from Earth, while estimates for the nebula itself, IC 1318, and the star cluster NGC 6910, located in the upper left part of the image, range from 2,000 to 5,000 light-years.

Conclusion

The Butterfly Nebula (IC 1318B) is one of the most beautiful and bright objects in the constellation Cygnus. This region, containing huge stars, gas clouds, and glowing nebulae, is an important object for studying star formation processes. Its bright "wings" and dark central cloud create an incredibly spectacular image that has attracted the attention of astronomers and night sky enthusiasts around the world.

Visibility chart of Butterfly Nebula (IC 1318B) during the day

The height diagram of Butterfly Nebula (IC 1318B) above the horizon during the current day for the observatory observation point in Orenburg (51.7, 55.2). The chart shows when the object is above the horizon and at what maximum height in degrees it rises. The data is relevant for the observation date: Saturday, 26 April 2025.
DateMoon PhaseExposureCCD TemperatureGainOffsetFilter
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