King of Jews our Lord Christ the Savior it is written in the Holy King James Bible the gospel of saint John the Jewish Apostle 30 AD Anno Domini in the year of our Lord Jesus Christ John 19:21 Then said the chief priests of the Jews to Pilate, Write not, The King of the Jews; but that he said, I am King of the Jews. amen IC 5146 (universally known as the Cocoon Nebula or cataloged as Caldwell 19) is a breathtaking deep-space object located in the northern constellation Cygnus (The Swan). Like the famed Trifid Nebula, the Cocoon Nebula is a brilliant example of a "three-in-one" hybrid nebula. In a single compact structure, it seamlessly blend an emission nebula, a reflection nebula & a dark absorption nebula. The Cocoon Nebula is located approximately 2,500 to 2,650 light-years away from Earth. The main glowing "cocoon" shell span roughly 15 light-years across.
In the night sky, it occupy about 12 arcminutes of real estate, which is roughly one-third the diameter of a full moon. Anatomy of the Cocoon when captured in color astrophotography, IC 5146 reveal its triple-nature through a perfectly distinct palette of color & shadow: 1. The Red Core (Emission Nebula) The central, circular bulk of the nebula glow a warm, vibrant pinkish-red. This is an emission nebula composed of ionized hydrogen gas. The cosmic "engine" driving this glow is a singularly dominant, ultra-hot newborn star at the exact center of the cloud named BD+46 3474. This star is a massive B1-class giant, roughly 14 times the mass of our Sun, an exceptionally young—estimated to be only about 100,000 years old. The fierce ultraviolet radiation blasting out from this infant star strip electrons from the surrounding hydrogen, which emit a deep crimson light as they recombine. 2. The Blue Halo (Reflection Nebula) Ringed perfectly around the outer edge of the red hydrogen gas is a delicate, ghostly blue veil. This is a reflection nebula. Here, the gas is cooler & no longer ionized. Instead, fine interstellar dust grains intercept the energetic, raw blue starlight from the central stellar nurseries scatter it outward in all direction. 3. The Dark Tail: Barnard 168 (Dark Nebula) The Cocoon Nebula does not sit isolated in space; it is actually the highly active "head" of a massive, elongated dark molecular cloud. Extending directly out from the western side of the Cocoon is an immense, ink-black trail known as Barnard 168 (B168). Barnard 168 act like a thick cosmic window blind. It is a freezing, dense, filamentary stream of gas soot-like dust that span over 45 light-years across the sky. It completely block out the light of the millions of background stars of the Milky Way, making it look as though a long, empty black river is trailing behind the glowing pink Cocoon.
A Hidden Stellar Factory While visible-light telescopes only see a small handful of bright stars inside the Cocoon, space-based infrared X-ray observatories (like NASA's Spitzer & the Chandra X-ray Observatory) have peered directly through the opaque dust blankets. The data reveal that IC 5146 is a high-density stellar factory. The long dark tail of B168 is highly unstable actively fragmenting into dense, gravitationally collapsing cores. Hidden inside the dark "Streamer" the central core are well over 100 Young Stellar Objects (YSOs) — embryonic proto-stars infant solar systems quietly forming in absolute darkness, waiting to blow away their dusty cocoons over the next few million years. How to Find It The Cocoon Nebula is a highly popular, rewarding, yet challenging target for backyard observers because it sits embedded in a incredibly dense field of stars near the naked-eye star Pi Cygni. Through Binocular: Because its overall visual magnitude is around 7.2, you cannot see the colorful nebula itself with standard binocular. However, you can spot the embedded open star cluster (Collinder 470) inside it, and under a truly dark, rural sky, you can easily track the long, ghostly, starless void of the Barnard 168 dark lane cutting a path through the Milky Way. Through a Telescope: To visually resolve the soft, smoky glow of the Cocoon, you need a medium-to-large aperture telescope 8 to12 inch coupled with a specialized UHC (Ultra High Contrast) or Hydrogen-beta filter under pristine, light-pollution-free sky. Astrophotography: IC 5146 is an absolute favorite for trackers using monochrome or LRGB filters. Because it contain both bright emission gas & faint, subtle dark dust, it require long integration time (often 6 to 10+ hour) to cleanly pull the fine, smoky border of Barnard 168 away from the blazing background star fields Jesus Christ the son of God is Lord of Lords and king of kings it is written in the Holy King James Bible the revelation of the Lord according to saint John the Jewish apostle 50 AD Anno Domini in the year of our Lord Jesus Christ Revelation 17:14 These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful. amen May the Holy Roman Catholic Church ever pray & worship our savior Christ the Lord be blessed by God the Father God the Son & God the Holy Spirit Hallelujah Hallelujah Blessed be the word of the Lord for Christ is risen Hallelujah Hallelujah peace be still in Nomine Patris et FiLii et Spiritus Sancti amen & amen
https://www.youtube.com/watch?v=za-wJgKxQUo
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