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Sh2-276 Bucle de Barnard. Es una nebulosa de emisión, parte del Complejo Molecular de la Nube de Orión (OMCC), que también contiene la nebulosa Cabeza de Caballo y la nebulosa de Orión. El lazo toma la forma de un gran arco aproximadamente centrado en la nebulosa de Orión M42. Las estrellas en la nebulosa de Orión se cree que son responsables de la ionización del bucle.
El bucle se extiende aparentemente unos 10º, cubriendo gran parte de Orión. Es visible en fotografías de larga exposición.
Se encuentra a unos 1.400 años luz con unos dimensiones de más de 100 años luz de diámetro. Se cree que se originó en una explosión de supernova hace unos 2 millones de años, que tal vez creó varias estrellas fugitivas conocidas, incluyendo AE Aurigae, Mu Columbae y 53 Arietis,2 que se estima han sido parte de un sistema estelar múltiple en el que una de ellas explotó como supernova.
Aunque esta nebulosa débil fue observada por los astrónomos anteriores, lleva el nombre del pionero astrofotógrafo E.E. Barnard quien la fotografió y publicó una descripción en 1894.
B33 Nebulosa Cabeza de Caballo. Es una nube de gas fría y oscura, situada a unos 1.500 años luz de la Tierra, al sur del extremo izquierdo del cinturón de Orión. Forma parte del Complejo de Nubes Moleculares de Orión, y mide aproximadamente 3,5 años luz de ancho. Esta nebulosa oscura es visible por contraste, ya que aparece por delante de la nebulosa de emisión IC 434.
NGC 2024 Nebulosa de la Flama. Es una nebulosa de emisión que aparenta estar en llamas situada a unos 1.350 años-luz. Se encuentra cerca de la estrella más oriental del cinturón de Orión, Alnitak.
M78 NGC 2068. Es una nebulosa de reflexión en la constelación Orión. Fue descubierta por Pierre Méchain en 1780 e incluida por Charles Messier en su catálogo de objetos ese mismo año.
M78 es la nebulosa de reflexión difusa más brillante de un grupo de nebulosas que incluyen NGC 2064, NGC 2067 y NGC 2071. Este grupo pertenece al Complejo de Nubes Moleculares de Orión y está a unos 1.600 años luz. M78 se encuentra en los pequeños telescopios como un parche nebuloso e implica dos estrellas de la décima magnitud. Estas dos estrellas, HD 38563A y HD 38563B, son responsables de hacer visible la nube de polvo en M78 reflejando su luz. Se conocen en M78 alrededor de 45 estrellas variables del tipo T Tauri, jóvenes estrellas todavía en proceso de formación, así como unos 17 objetos Herbig-Haro.
vdB 62/63. Son nebulosas de reflexión en la constelación de Orión, situadas en la parte centro-oriental de la constelación, en el extremo noreste del Bucle de Barnard. Constituyen una pequeña porción iluminada de una gran nebulosa oscura catalogado como LDN 1622, extremadamente compacto y denso; dentro de esta nube fenómenos tienen lugar intensa formación estelar, como lo demuestra la presencia de numerosas estrellas jóvenes.
Alnitak ( ζ Orionis) es un sistema estelar triple que forma parte del llamado cinturón de Orión junto a Mintaka (δ Orionis) y Alnilam (ε Orionis), conocidas como «las tres Marías». Su nombre proviene del árabe y significa «el cinturón».
La estrella principal del sistema, Alnitak A, es a su vez una estrella binaria. La componente principal, Alnitak Aa, es una supergigante azul de tipo espectral O9.5Ib y magnitud aparente +1,89, la más brillante en el cielo de este tipo espectral. Alnitak Ab, 2 magnitudes más tenue, es igualmente una estrella de tipo O, aunque de secuencia principal.
Alnitak Aa es una estrella muy caliente con una temperatura efectiva de unos 30.000K, 10.000 veces más luminosa que el Sol en el espectro visible, aunque si se considera la importante cantidad de radiación ultravioleta que emite, su luminosidad es 100.000 mayor que la solar. Su masa se estima en 20 masas solares. Alnitak es una fuente de rayos X provenientes del fuerte viento estelar. Se encuentra a unos 700 años luz.
Alnilam (ε Orionis) es la cuarta estrella más brillante en la constelación de Orión. Forma parte del llamado Cinturón de Orión (o «Las Tres Marías») junto a Mintaka (δ Orionis) y Alnitak (ζ Orionis), siendo la más brillante de las tres, pese a que es la más lejana (1.340 años luz). Su nombre proviene del árabe y significa «collar de perlas».
Alnilam es una supergigante blanco-azulada de tipo espectral B0Iab, muy masiva (unas 40 masas solares), y extraordinariamente luminosa: incluyendo la gran cantidad de radiación ultravioleta emitida por la estrella, su luminosidad equivale a 375.000 veces la luminosidad solar. Un fuerte viento estelar que sopla desde su superficie a 2.000 km/s hace que pierda masa a un ritmo 20 millones de veces mayor que el Sol.
Mintaka (δ Ori Orionis) es la estrella más al norte del Cinturón de Orión y que junto a Alnitak (ζ Orionis) y Alnilam (ε Orionis) forma el grupo conocido como “Las tres Marías”. Su nombre deriva de la palabra en árabe "cinturón".
Mintaka es una estrella múltiple compleja; a un minuto de arco de la estrella principal se puede observar otra estrella de magnitud aparente +6,8. A la distancia de 915 años luz a la que se encuentra Mintaka, la separación real entre ambas es de al menos 0,25 años luz. Entre estas dos componentes existe una tenue estrella de magnitud 14. La estrella de magnitud 6,8 es además una binaria espectroscópica.
M42 Nebulosa de orión. También conocida como NGC 1976, es una nebulosa difusa situada al sur del cinturón de Orión. Es una de las nebulosas más brillantes que existen, y puede ser observada a simple vista sobre el cielo nocturno. Está situada a unos 1.270 años-luz y posee un diámetro de unos 24 años luz. Algunos documentos se refieren a ella como la Gran Nebulosa de Orión, y los textos más antiguos la denominan Ensis, palabra latina que significa "espada", nombre que también recibe la estrella Eta Orionis, que desde la Tierra se observa muy próxima a la nebulosa.
Saiph (κ Orionis). Es la sexta estrella más brillante de la constelación de Orión con magnitud aparente +2,06. Su nombre proviene del árabe y significa «espada del gigante». Se encuentra a unos 720 años luz.
Con una temperatura superficial de 26.000 K, Saiph es una supergigante blanco-azulada de tipo espectral B0.5Ia, cuya luminosidad —incluida una gran parte de su radiación emitida en el ultravioleta— es 65.000 veces mayor que la del Sol. Su diámetro angular ha sido medido y ha permitido obtener directamente el valor de su radio, 11 veces mayor que el radio solar.
Sh2-276 Barnard’s Loop. It is an emission nebula, part of Orion Cloud Molecular Complex (OMCC), which also contains the Horsehead Nebula and Orion Nebula. The loop takes the form of a large arc approximately centered in the Orion M42 nebula. The stars in Orion nebula are believed to be responsible for the ionization of the loop.
The loop apparently extends about 10°, covering much of Orion constellation. It is visible in long exposure photographs.
It is about 1,400 light years old with dimensions of more than 100 light-years in diameter. It is believed to have originated in a supernova explosion about 2 million years ago, which may have created several known fugitive stars, including AE Aurigae, Mu Columbae and 53 Arietis, 2 which are estimated to have been part of a multiple star system in which one of them exploded as a supernova.
Although this faint nebula was observed by previous astronomers, it bears the name of the pioneering astrophotographer E.E. Barnard who photographed it and published a description in 1894.
B33 Horse Head Nebula. It is a cloud of cold and dark gas, located about 1,500 light-years from Earth, south of the far left of the Orion belt. It is part of the Orion Molecular Cloud Complex, and is approximately 3.5 light-years wide. This dark nebula is visible by contrast as it appears in front of the emission nebula IC 434.
NGC 2024 Flame Nebula. It is a nebula of emission that appears to be in flames located about 1,350 light-years. It is located near the easternmost star of Orion belt, Alnitak.
M78 NGC 2068. It is a reflection nebula in the Orion constellation. It was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog of objects that same year.
M78 is the brightest fuzzy reflection nebula in a group of nebulae including NGC 2064, NGC 2067 and NGC 2071. This group belongs to the Orion Molecular Cloud Complex and is about 1,600 light-years away. M78 is found in small telescopes as a nebulous patch and involves two stars of the tenth magnitude. These two stars, HD 38563A and HD 38563B, are responsible for making visible the cloud of dust in M78 reflecting its light. About 45 variable stars of type T Tauri are known in M78, young stars still in the process of formation, as well as about 17 Herbig-Haro objects.
VdB 62/63. They are reflection nebulae in Orion constellation, located in central-eastern part of the constellation, at the northeastern end of the Barnard’s Loop. They constitute a small illuminated portion of a great dark nebula cataloged as LDN 1622, extremely compact and dense. Within this cloud take place intense star formation, as evidenced by the presence of numerous young stars.
Alnitak (ζ Orionis) is a triple star system that forms part of the so-called Orion belt along with Mintaka (δ Orionis) and Alnilam (ε Orionis), known as "the three Marys." Its name comes from Arabic and means "the belt".
The main star of the system, Alnitak A, is itself a binary star. The main component, Alnitak Aa, is a blue supergiant of spectral type O9.5Ib and apparent magnitude +1.89, the brightest in the sky of this spectral type. Alnitak Ab, 2 dimmer magnitudes, is equally an O-type star, although of main sequence.
Alnitak Aa is a very hot star with an effective temperature of about 30.000K, 10,000 times more luminous than the Sun in visible spectrum, although considering the important amount of ultraviolet radiation that emits, its luminosity is 100,000 greater than the solar one. Its mass is estimated at 20 solar masses. Alnitak is a source of X-rays from the strong stellar wind. It is about 700 light-years away.
Alnilam (ε Orionis) is the fourth brightest star in Orion constellation. It is part of the so-called Orion Belt (or "The Three Marias") along with Mintaka (δ Orionis) and Alnitak (ζ Orionis), being the brightest of the three, although it is the farthest (1,340 light-years). Its name comes from Arabic and means "pearl necklace".
Alnilam is a white-blue supergiant of spectral type B0Iab, very massive (about 40 solar masses), and extremely luminous: including the great amount of ultraviolet radiation emitted by the star, its luminosity is equivalent to 375,000 times the solar luminosity. A strong stellar wind blowing from its surface at 2,000 km/s causes it to lose mass at a rate 20 million times greater than the Sun.
Mintaka (δ Ori Orionis) is the northernmost star of Orion Belt and together with Alnitak (ζ Orionis) and Alnilam (ε Orionis) form the group known as "The Three Marias". Its name derives from the Arabic word, belt.
Mintaka is a complex multiple star; To one minute of arc of the main star can be observed another star of magnitude apparent +6,8. At the distance of 915 light years to Mintaka, the actual separation between the two is at least 0.25 light years. Between these two components there is a tenuous star of magnitude 14. The star of magnitude 6.8 is also a spectroscopic binary.
M42 Orion Nebula. Also known as NGC 1976, it is a diffuse nebula located south of Orion belt. It is one of the brightest nebulae that exist, and can be observed with the naked eye over the night sky. It is located about 1,270 light-years and has a diameter of about 24 light-years. Some documents refer to it as the Great Orion Nebula, and the earliest texts call it Ensis, a Latin word for "sword", a name that also receives the star Eta Orionis, which from Earth is very close to the nebula .
Saiph (κ Orionis). It is the sixth brightest star of Orion constellation with apparent magnitude +2.06. Its name comes from the Arabic and means "sword of the giant". It is about 720 light-years away.
With a surface temperature of 26,000 K, Saiph is a white-blue supergiant of spectral type B0.5Ia, whose luminosity - including a large part of its radiation emitted in the ultraviolet - is 65,000 times greater than the Sun. Its angular diameter has been measured and has made it possible to directly obtain the value of its radius, 11 times greater than the solar one.
re-purposed vinyl LP (the Bar-Kays' "Nightcruising") illustrating a section of the Chicago Perimeter Ride map
This 50-acre natural wetlands adjoins the Ohio River in New Albany, Indiana, and is directly across the river from Louisville, Kentucky.
Freightliner 59001 'YEOMAN ENDEAVOUR' departs from Westbury with 6C31, the 10:14 from Theale Hanson to Whatley Quarry.
Included in the consist is 66567 that had been working 6C52, the 10:04 from West Drayton Frays Siding to East Usk Yard when it hit a person on the track at Thatcham.
6C52 was stopped at the next signal with the Driver unable to continue and the 66 deemed undrivable.
59201 was removed from 6C31 after arriving at Westbury and returned light engine as 1Z99 to recover 6C52.
After being at a stand for just over three hours, 59201 led 6C52 as far as Woodborough Down Loop where the wagons were left and the 66 was brought to Westbury.
59201 backed 66567 onto the wagons of 6C31, which then departed through to Whatley Quarry as booked, arriving 223 minutes late.
Lambridge overbridge, Penleigh.
28-05-2024
Froot Loops Kids Cereal, Disney Parks free Character Spoon Inside! 1/2015 by Mike Mozart of TheToyChannel and JeepersMedia on YouTube
The 3rd and 4th Inversion of the ride, just before the second lift hill
To see more American Adventure Photo's, click this link www.flickr.com/photos/coastermadmatt/sets/72157623890734458/
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1,000 Views on 14th January 2014
There is one small consolation for putting in a long day at the office.. the loop really lights up in so many ways once the sun has hit that right spot after 7:00 or so.. If we could just pause time at dusk for a few hours, I'd be a happy snapper. That didn't sound right, but you get it. :)
Construction continues at the site of San Antonio's newest attraction . . . Traders Village Marketplace. Concrete slabs are prepped prior to the erection of steel vendor sales buildings. Traders Village - SA is scheduled to open in late 2010 at the intersection of SW Loop 410 and Old Pearsall Road.
May 27, 2013 - Buttermilk Falls State Park - Ithaca, NY - Nikon 35mm f/1.8G AF-S DX - f/8 1/100s, ISO 200
Some photos taken while the "we Love Yo-Yo Meet 2015" (WLYYM 2015) in Weimar @ JGH Ettersberg. Organized by Dave from www.yo-shop.de
Ventral view of White Looper moth in Cairns, thanks to Dianne for ID. This is from inside looking out through a window.
Where else can you show your style than the Delmar Loop... impromptu style snaps. Taken with Nikon D90 and Nikkor 105 f2.0.
Froot Loops Bloopers, Kellogg's Kids Cereal, 1/2015, by Mike Mozart of TheToyChannel and JeepersMedia on YouTube
Pilots at the Chicago Air and Water Show are doing a loop-de-loop. Similar to the experiences of roller coaster riders doing a clothoid loop, the pilots will experience varying G-forces during the loop. They will feel light at the top and heavy at the bottom. Further information about these experiences can be found at The Physics Classroom.
This is a looper caterpillar, so called because of the loop formed when it moves. Chomping its way through the tomatoes, a Chrysodeixis - either Chrysodeixis eriosoma or Chrysodeixis subsidens, family Noctuidae. Como NSW Australia, December 2011.
Chrysodeixis have 2 pairs of abdominal prolegs. When disturbed, the caterpillars move the front portion of their body about in wide sweeping arcs. GJ Goodyear, NSW Department of Agriculture Pest Bulletin 58, 1977.
Note that the looping action of this noctuid is different to the 'true' looping action of a geometrid caterpillar, which inches its way along by repeatedly stretching out the front of its body and grabbing on, followed by a loop of the body which brings up the rear end.
See E H Zeck's wonderful watercolour of a Green Looper.
Looking south from the Green Line at Wells. It wasn't until I saw this photo on the computer that I realized the contrast between the colors of the buildings on the east and west sides of the tracks.
Explored #500 April 24, 2009.
255/366 (4,306)
And another for the 366 treasure hunt, number 45 Loop.
I'd finished hoovering and was coiling up the cable, and as it was in a right muddle, I thought, better get the camera and cross another one of the treasure hunt :))
The Soho Loop turns right off the Birmingham Mainline Canal. I take it regularly on my way to and from the city centre to home in Handsworth. The towpaths are good cycle tracks, improved by the Canal & River Trust. Oscar often runs beside me, safely off the road.