Spiral Galaxy IC 342

Name in the directory:IC_342
Category:Galaxy
Right Ascension:3h 46m 53.38s
Declination:+68° 9′ 32.76″
Total Exposure:1 час 50 минут
Number of Frames:22
Link to FITS files:Download
  • L45 minutes (9 frames)
  • R35 minutes (7 frames)
  • G15 minutes (3 frames)
  • B15 minutes (3 frames)

The spiral galaxy IC 342 is one of the most studied objects in the constellation Giraffe. It is located at a distance of about 10 million light-years from Earth and has a diameter of about 75,000 light-years.

Characteristics and structure

IC 342 is a typical spiral galaxy, which consists of spiral arms in which stars and gas rotate around a central core. The galaxy also contains many nebula regions in which new stars are born. These processes make the galaxy an interesting object for astronomical study.

Observation problems

Because of its location in an area hidden by thick interstellar dust, observations of IC 342 are difficult, which led to its nickname "The Hidden Galaxy". Despite this, the galaxy can be easily detected even with binoculars, and in ideal conditions it would be visible to the naked eye.

Astronomical research

IC 342 is an object of study for many astronomers, as it is one of the closest galaxies to us, but remains poorly studied due to dust. However, studying this galaxy helps to deepen our knowledge of the structure of galaxies and the processes occurring in their depths. The galaxy attracts the attention of astronomers with its large number of supernovae and star clusters, which makes it an interesting object for studying star formation and stellar evolution.

Discovery and features

The galaxy IC 342 was discovered by William Frederick Denning in 1892 and was initially considered part of the Local Group of galaxies, but it was later found that it is not a member. In 1935, Harlow Shapley discovered that the galaxy was larger than the full Moon, making it one of the largest spiral galaxies at the time. Modern estimates suggest that its apparent size is between half and two-thirds the diameter of the full Moon.

Satellites and New Discoveries

In 2020, the first known satellite of IC 342 was discovered — KKH 32, a dwarf spheroidal galaxy. This galaxy is located at a distance of 10.2 million light years and has a diameter of about 4,300 light years.

Conclusion

The galaxy IC 342 is an interesting object for astronomical observations due to its unique structure and important role in the study of galaxy evolution and star formation. Studying its hidden regions and studying interactions with its satellites helps astronomers better understand the processes occurring in such distant and mysterious corners of the Universe.

Visibility chart of Spiral Galaxy IC 342 during the day

The height diagram of Spiral Galaxy IC 342 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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