APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

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APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

Post by APOD Robot » Sat Feb 02, 2019 5:18 am

Image LDN 1622: Dark Nebula in Orion

Explanation: The silhouette of an intriguing dark nebula inhabits this cosmic scene. Lynds' Dark Nebula (LDN) 1622 appears against a faint background of glowing hydrogen gas only easily seen in long telescopic exposures of the region. LDN 1622 lies near the plane of our Milky Way Galaxy, close on the sky to Barnard's Loop, a large cloud surrounding the rich complex of emission nebulae found in the Belt and Sword of Orion. But the obscuring dust of LDN 1622 is thought to be much closer than Orion's more famous nebulae, perhaps only 500 light-years away. At that distance, this 1 degree wide field of view would span less than 10 light-years. Its foreboding appearance lends this dark expanse a popular name, the Boogeyman Nebula.

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Re: APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

Post by Boomer12k » Sat Feb 02, 2019 7:03 am

Intriguing image...but don't worry, the "boogeyman" won't getchyou...he has a "swordfish" in his chest...

It is interesting that it is so far removed from things.

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Re: APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

Post by Ann » Sat Feb 02, 2019 10:53 am

Here is a humongous (13 MB) widefield image of Orion. Open it at your own risk!

The good thing about the picture is that it gives you a good idea of where the Bogeyman Nebula is located. Start from the yellowish Flame Nebula near the Horsehead Nebula, move down and to the left until you can see blue-white reflection nebula M78 next to a beige nebula. Move down and to the left in the same direction, cross red Barnard's Loop, and below it you can see the Bogeyman.

It is clear from the widefield image that LDN 1622 is not a part of Barnard's Nebula. It is easy to think of it as a foreground object.

The Bogeyman looks like a pretty typical low mass star formation site to me. There is an elongated dust lane, and at one end of it (the "head") a star is about to peak out.

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Re: APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

Post by orin stepanek » Sat Feb 02, 2019 12:24 pm

Mommy told me to go to sleep or the boogie man will get you :lol2:


Smile today; tomorrow's another day!

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Re: APOD: LDN 1622: Dark Nebula in Orion (2019 Feb 02)

Post by neufer » Sat Feb 02, 2019 10:13 pm

https://en.wikipedia.org/wiki/Bogeyman wrote:
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<<The Bogeyman (also spelled boogeyman, bogyman, bogieman or boogie man) is a mythical creature used by adults to frighten children into good behaviour. The Bogeyman has no specific appearance and conceptions vary drastically by household and culture, but is commonly depicted as a masculine or androgynous monster that punishes children for misbehavior. Bogeymen may target a specific act or general misbehaviour, depending on what purpose needs serving, often based on a warning from the child's authority figure.

The word bogey is believed to be derived from the Middle English bogge / bugge ("something frightening", "scarecrow"). Theories on its origin include a root meaning "goat", or a cognate of the German bögge, böggel-mann ("goblin"). It could be influenced in meaning by Old English -budda used in compounds for "beetle". A related word, bugbear, from bug, meaning goblin or scarecrow, and bear, was imagined as a demon in the form of a bear that eats small children, and was also used to mean a general object of dread. The word bugaboo, with a similar pair of meanings, may have arisen as an alteration of bugbear.

The word could also be linked to many similar words in other Indo-European: bogle (Scots), boeman (Dutch), Butzemann (German), busemann (Norwegian), bøhmand / bussemand (Danish), bòcan, púca, pooka or pookha (Irish), pwca, bwga or bwgan (Welsh), puki (Old Norse), pixie or piskie (Cornish), puck (English), bogu (Slavonic), buka (Russian, бука), bauk (Serbian), bubulis (Latvian), baubas (Lithuanian), bobo (Polish), bubák (Czech), bubák (Slovak), bebok (Silesian), papão (Portuguese), торбалан (Bulgarian), Μπαμπούλας (Greek), ბუა), babau (Italian), бабай (Ukrainian), baubau (Romanian), and papu (Catalan).>>
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