Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B85  ·  HD164294  ·  HD164384  ·  HD164402  ·  HD164492  ·  HD164514  ·  HD164534  ·  HD164704  ·  HD164739  ·  HD313595  ·  HD313596  ·  HD313597  ·  HD313598  ·  HD313606  ·  HD313710  ·  HD313713  ·  HD313714  ·  HD313715  ·  HD313716  ·  HD313718  ·  HD313731  ·  HD313732  ·  HD313734  ·  HD313735  ·  HD313736  ·  HD313737  ·  HD313739  ·  HD313740  ·  LBN 27  ·  M 20  ·  And 3 more.
Getting plate-solving status, please wait...
The Trifid Nebula HaLRGB, Christopher Stobie
Powered byPixInsight

The Trifid Nebula HaLRGB

Getting plate-solving status, please wait...
The Trifid Nebula HaLRGB, Christopher Stobie
Powered byPixInsight

The Trifid Nebula HaLRGB

Equipment

Loading...

Acquisition details

Loading...

Description

Finally was able to gather some data on this target after years of clouds, smoke, or some other issue. 

The Trifid Nebula, also known as Messier 20 or NGC 6514, found in the constellation Sagittarius. Discovered by Charles Messier in 1764, this nebula exhibits a rich amalgamation of different types of astronomical phenomena: it is an emission nebula, a reflection nebula, a dark nebula, and a star-forming region.

Location and Structure:
The Trifid Nebula is located approximately 5,200 light years from Earth. It spans about 40 light years across, which means it's relatively small when compared to other nebulae. However, what it lacks in size it more than makes up for in visual complexity.The nebula is bisected into three sections, or lobes, by dark lanes of interstellar dust, hence the name "Trifid" which means "divided into three lobes." Each of these lobes is a distinct area of active star formation. The dark lanes of dust and gas are regions of gravitational collapse, where new stars are currently forming.

Emission, Reflection and Dark Nebulae:
The red portion of the nebula is an emission nebula, where the most prevalent gas, hydrogen, is ionized by ultraviolet light from nearby hot stars and emits a characteristic red light as it recombines.The blue portion of the Trifid Nebula is a reflection nebula. Unlike emission nebulae, reflection nebulae do not emit their own light, but instead reflect the light of nearby stars. This reflected light is scattered more at shorter (bluer) wavelengths, hence the blue color.The dark lanes that crisscross the nebula, giving it the 'trifid' appearance, are dark nebulae. Dark nebulae are so dense with dust that they obscure the light from the emission and reflection nebulae behind them, appearing as dark lanes against the brighter backgrounds.

Star Formation:
Trifid Nebula is also known for its intense star-forming activity. At its center lies a massive young star (HD 164492A), which drives much of the nebula's luminescence and helps to ionize a vast sphere within the nebula, causing the visible glow. This star, estimated to be approximately 100,000 years old, belongs to the spectral class O5. Its powerful stellar winds and ultraviolet radiation shape and illuminate the surrounding nebula.

Comments