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El Ministerio de Transportes y Comunicaciones suscribió con las empresas América Móvil Perú S.A.C (Claro), Entel Perú S.A. y Telefónica del Perú S.A.A, los contratos de concesión de cada uno de los tres bloques de la Banda 698-806 MHz – conocida como Banda 700 MHz, adjudicados.
“La Banda 700 MHz tiene ventajas para prestar servicios 4G, en especial Internet de alta velocidad en áreas rurales o zonas de baja densidad poblacional; además permitirá atender la demanda en zonas urbanas con gran densidad de edificios y construcciones, donde se concentra más del 70% del tráfico”, declaró el Ministro José Gallardo.
Agregó que para asegurar la expansión de Internet móvil de banda ancha en áreas rurales, los adjudicatarios de la licitación deberán dar cobertura de servicios a más de 190 centros poblados en todo el país.
El evento, presidido por el titular del MTC, se desarrolló en la sede del MTC y contó con la presencia del Viceministro de Comunicaciones, Javier Coronado Saleh; el Director Ejecutivo de ProInversión, Carlos Herrera Perret; el Jefe de Proyectos de Telecomunicaciones de ProInversión, Jesús Guillén Marroquín; y el Director General de Concesiones en Comunicaciones, Juan Carlos Mejía Cornejo, entre otras autoridades y representantes de las empresas adjudicatarias.
La Banda 700
La Banda 700 MHz permitirá a cada una de las empresas de telecomunicaciones brindar o ampliar el servicio de internet móvil en banda ancha con tecnología Long Term Evolution (LTE), o superior, para dar servicios comerciales de 4G (cuarta generación).
Por tratarse de una banda de cobertura, tiene ventajas para la prestación de servicios 4G, en especial Internet de Banda Ancha o alta velocidad en áreas rurales o de baja densidad poblacional; además, por su buena penetración en edificaciones, hará posible atender la demanda de zonas urbanas, particularmente las que cuentan con gran densidad de construcciones y edificios, donde se concentra más del 70% del tráfico.
Estas cualidades facilitan la implementación de soluciones de voz y datos utilizando tecnologías de cuarta generación. Asimismo, la concesión de la Banda 700 MHz ampliará la disponibilidad de la tecnología 4G a nivel nacional.
Beneficios a los usuarios
Velocidad
Se garantizará a los usuarios contar con velocidades mínimas de acceso a Internet de banda ancha. Cabe señalar que los operadores podrán ofrecer velocidades mayores a la exigidas en el contrato.
Tecnología
Si bien las operadoras emplearán la tecnología 4G, también podrá usar tecnologías con eficiencia superior a ella. Aunque el servicio estará enfocado a la transmisión de datos, a futuro podría usarse también para servicios de voz, el denomina Voz sobre LTE o VoLTE.
Acceso
La mayor parte de celulares inteligentes o smartphones 3G son multibandas, por lo que sus usuarios no tendrán dificultades en utilizarlos y acceder a los servicios que se puedan ofrecer utilizando la Banda 700 MHz.
El último 26 de mayo, cada una de las tres operadoras se adjudicó un bloque de la Banda 700 Mhz, en un proceso de promoción y concesión desarrollado por ProInversión, por encargo del Ministerio de Transportes y Comunicaciones.
La empresa América Móvil Perú S.A.C., se adjudicó el bloque B al ofrecer US$ 306’000,001; Entel Perú S.A., el bloque A al ofertar US$ 290’206,123; y Telefónica del Perú S.A.A. el bloque C al ofrecer US$ 315’007,700.
Lima, 20 de julio de 2016
This infrared image from NASA's Spitzer Space Telescope shows the Helix nebula, a cosmic starlet often photographed by amateur astronomers for its vivid colors and eerie resemblance to a giant eye. .
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The nebula, located about 700 light-years away in the constellation Aquarius, belongs to a class of objects called planetary nebulae. Discovered in the 18th century, these cosmic butterflies were named for their resemblance to gas-giant planets. .
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Planetary nebulae are actually the remains of stars that once looked a lot like our sun. .
When sun-like stars die, they puff out their outer gaseous layers. These layers are heated by the hot core of the dead star, called a white dwarf, and shine with infrared and visible-light colors. Our own sun will blossom into a planetary nebula when it dies in about five billion years. .
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In Spitzer's infrared view of the Helix nebula, the eye looks more like that of a green monster's. Infrared light from the outer gaseous layers is represented in blues and greens. The white dwarf is visible as a tiny white dot in the center of the picture. The red color in the middle of the eye denotes the final layers of gas blown out when the star died. .
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The brighter red circle in the very center is the glow of a dusty disk circling the white dwarf (the disk itself is too small to be resolved). This dust, discovered by Spitzer's infrared heat-seeking vision, was most likely kicked up by comets that survived the death of their star. Before the star died, its comets and possibly planets would have orbited the star in an orderly fashion. But when the star blew off its outer layers, the icy bodies and outer planets would have been tossed about and into each other, resulting in an ongoing cosmic dust storm. Any inner planets in the system would have burned up or been swallowed as their dying star expanded. .
.
The Helix nebula is one of only a few dead-star systems in which evidence for comet survivors has been found. .
.
This image is made up of data from Spitzer's infrared array camera and multiband imaging photometer. Blue shows infrared light of 3.6 to 4.5 microns; green shows infrared light of 5.8 to 8 microns; and red shows infrared light of 24 microns. .
El Ministerio de Transportes y Comunicaciones suscribió con las empresas América Móvil Perú S.A.C (Claro), Entel Perú S.A. y Telefónica del Perú S.A.A, los contratos de concesión de cada uno de los tres bloques de la Banda 698-806 MHz – conocida como Banda 700 MHz, adjudicados.
“La Banda 700 MHz tiene ventajas para prestar servicios 4G, en especial Internet de alta velocidad en áreas rurales o zonas de baja densidad poblacional; además permitirá atender la demanda en zonas urbanas con gran densidad de edificios y construcciones, donde se concentra más del 70% del tráfico”, declaró el Ministro José Gallardo.
Agregó que para asegurar la expansión de Internet móvil de banda ancha en áreas rurales, los adjudicatarios de la licitación deberán dar cobertura de servicios a más de 190 centros poblados en todo el país.
El evento, presidido por el titular del MTC, se desarrolló en la sede del MTC y contó con la presencia del Viceministro de Comunicaciones, Javier Coronado Saleh; el Director Ejecutivo de ProInversión, Carlos Herrera Perret; el Jefe de Proyectos de Telecomunicaciones de ProInversión, Jesús Guillén Marroquín; y el Director General de Concesiones en Comunicaciones, Juan Carlos Mejía Cornejo, entre otras autoridades y representantes de las empresas adjudicatarias.
La Banda 700
La Banda 700 MHz permitirá a cada una de las empresas de telecomunicaciones brindar o ampliar el servicio de internet móvil en banda ancha con tecnología Long Term Evolution (LTE), o superior, para dar servicios comerciales de 4G (cuarta generación).
Por tratarse de una banda de cobertura, tiene ventajas para la prestación de servicios 4G, en especial Internet de Banda Ancha o alta velocidad en áreas rurales o de baja densidad poblacional; además, por su buena penetración en edificaciones, hará posible atender la demanda de zonas urbanas, particularmente las que cuentan con gran densidad de construcciones y edificios, donde se concentra más del 70% del tráfico.
Estas cualidades facilitan la implementación de soluciones de voz y datos utilizando tecnologías de cuarta generación. Asimismo, la concesión de la Banda 700 MHz ampliará la disponibilidad de la tecnología 4G a nivel nacional.
Beneficios a los usuarios
Velocidad
Se garantizará a los usuarios contar con velocidades mínimas de acceso a Internet de banda ancha. Cabe señalar que los operadores podrán ofrecer velocidades mayores a la exigidas en el contrato.
Tecnología
Si bien las operadoras emplearán la tecnología 4G, también podrá usar tecnologías con eficiencia superior a ella. Aunque el servicio estará enfocado a la transmisión de datos, a futuro podría usarse también para servicios de voz, el denomina Voz sobre LTE o VoLTE.
Acceso
La mayor parte de celulares inteligentes o smartphones 3G son multibandas, por lo que sus usuarios no tendrán dificultades en utilizarlos y acceder a los servicios que se puedan ofrecer utilizando la Banda 700 MHz.
El último 26 de mayo, cada una de las tres operadoras se adjudicó un bloque de la Banda 700 Mhz, en un proceso de promoción y concesión desarrollado por ProInversión, por encargo del Ministerio de Transportes y Comunicaciones.
La empresa América Móvil Perú S.A.C., se adjudicó el bloque B al ofrecer US$ 306’000,001; Entel Perú S.A., el bloque A al ofertar US$ 290’206,123; y Telefónica del Perú S.A.A. el bloque C al ofrecer US$ 315’007,700.
Lima, 20 de julio de 2016
42nd Infantry Division Soldiers listen to Instruction about an AN/PRC Multiband tactical radio operations, Feb. 24 at Camp Smith Training Site during pre-mobilization training to be deployed to Guantanamo Bay, Cuba. Photo by Sgt. 1st Class Steven Petibone, 42nd Infantry Division.
Минерално стъкло устойчиво на надраскване.
Удароустоичивата конструкция предпазва от сътресения и вибрации.
Идеален за гмуркане без водолазна екипировка. Часовникът е водоустоичив до 200м/20 бара.
Full Auto
Multi-Band (САЩ, Великобритания, Германия, Япония, Китай) получава радио сигнали
Tough Solar мощност
NASA's Spitzer Space Telescope has captured stunning infrared views of the famous Andromeda galaxy to reveal insights that were only hinted at in visible light.
This Spitzer's 24-micron mosaic is the sharpest image ever taken of the dust in another spiral galaxy. This is possible because Andromeda is a close neighbor to the Milky Way at a mere 2.5 million light-years away.
The Spitzer multiband imaging photometer's 24-micron detector recorded 11,000 separate snapshots to create this new comprehensive picture. Asymmetrical features are seen in the prominent ring of star formation. The ring appears to be split into two pieces, forming the hole to the lower right. These features may have been caused by interactions with satellite galaxies around Andromeda as they plunge through its disk.
Spitzer also reveals delicate tracings of spiral arms within this ring that reach into the very center of the galaxy. One sees a scattering of stars within Andromeda, but only select stars that are wrapped in envelopes of dust light up at infrared wavelengths.
This is a dramatic contrast to the traditional view at visible wavelengths, which shows the starlight instead of the dust. The center of the galaxy in this view is dominated by a large bulge that overwhelms the inner spirals seen in dust. The dust lanes are faintly visible in places, but only where they can be seen in silhouette against background stars.
The data were taken on August 25, 2004, the one-year anniversary of the launch of the space telescope. The observations have been transformed into this remarkable gift from Spitzer -- the most detailed infrared image of the spectacular galaxy to date.
Faja sacrolumbar semirrígida en material transpirable multibanda con dos bandas elásticas tensoras cruzadas en la parte trasera que abrochan en el delantero, ballenas verticales en la espalda y cierre velcro delantero. Incorpora una placa lumbar de foam para dar calor en dicha zona la cual puede retirarse cuando no se precise. Lumbago, lumbociática, procesos degenerativos, hernia discal, espondilolisis, espondiloartrosis.
Para más información: www.exclusivasiglesias.com/es/product/ortesis-tronco/faja...
El Ministerio de Transportes y Comunicaciones suscribió con las empresas América Móvil Perú S.A.C (Claro), Entel Perú S.A. y Telefónica del Perú S.A.A, los contratos de concesión de cada uno de los tres bloques de la Banda 698-806 MHz – conocida como Banda 700 MHz, adjudicados.
“La Banda 700 MHz tiene ventajas para prestar servicios 4G, en especial Internet de alta velocidad en áreas rurales o zonas de baja densidad poblacional; además permitirá atender la demanda en zonas urbanas con gran densidad de edificios y construcciones, donde se concentra más del 70% del tráfico”, declaró el Ministro José Gallardo.
Agregó que para asegurar la expansión de Internet móvil de banda ancha en áreas rurales, los adjudicatarios de la licitación deberán dar cobertura de servicios a más de 190 centros poblados en todo el país.
El evento, presidido por el titular del MTC, se desarrolló en la sede del MTC y contó con la presencia del Viceministro de Comunicaciones, Javier Coronado Saleh; el Director Ejecutivo de ProInversión, Carlos Herrera Perret; el Jefe de Proyectos de Telecomunicaciones de ProInversión, Jesús Guillén Marroquín; y el Director General de Concesiones en Comunicaciones, Juan Carlos Mejía Cornejo, entre otras autoridades y representantes de las empresas adjudicatarias.
La Banda 700
La Banda 700 MHz permitirá a cada una de las empresas de telecomunicaciones brindar o ampliar el servicio de internet móvil en banda ancha con tecnología Long Term Evolution (LTE), o superior, para dar servicios comerciales de 4G (cuarta generación).
Por tratarse de una banda de cobertura, tiene ventajas para la prestación de servicios 4G, en especial Internet de Banda Ancha o alta velocidad en áreas rurales o de baja densidad poblacional; además, por su buena penetración en edificaciones, hará posible atender la demanda de zonas urbanas, particularmente las que cuentan con gran densidad de construcciones y edificios, donde se concentra más del 70% del tráfico.
Estas cualidades facilitan la implementación de soluciones de voz y datos utilizando tecnologías de cuarta generación. Asimismo, la concesión de la Banda 700 MHz ampliará la disponibilidad de la tecnología 4G a nivel nacional.
Beneficios a los usuarios
Velocidad
Se garantizará a los usuarios contar con velocidades mínimas de acceso a Internet de banda ancha. Cabe señalar que los operadores podrán ofrecer velocidades mayores a la exigidas en el contrato.
Tecnología
Si bien las operadoras emplearán la tecnología 4G, también podrá usar tecnologías con eficiencia superior a ella. Aunque el servicio estará enfocado a la transmisión de datos, a futuro podría usarse también para servicios de voz, el denomina Voz sobre LTE o VoLTE.
Acceso
La mayor parte de celulares inteligentes o smartphones 3G son multibandas, por lo que sus usuarios no tendrán dificultades en utilizarlos y acceder a los servicios que se puedan ofrecer utilizando la Banda 700 MHz.
El último 26 de mayo, cada una de las tres operadoras se adjudicó un bloque de la Banda 700 Mhz, en un proceso de promoción y concesión desarrollado por ProInversión, por encargo del Ministerio de Transportes y Comunicaciones.
La empresa América Móvil Perú S.A.C., se adjudicó el bloque B al ofrecer US$ 306’000,001; Entel Perú S.A., el bloque A al ofertar US$ 290’206,123; y Telefónica del Perú S.A.A. el bloque C al ofrecer US$ 315’007,700.
Lima, 20 de julio de 2016
Confeccionada con tejido elástico multibanda transpirable. Contención, soporte y apoyo lumbar. Cómodas y confortables. Post-quirúrgica y post-parto.
Para más información: www.exclusivasiglesias.com/es/product/ortesis-tronco/band...
Pfc. Kyle Winne, left, verifies a situation report from Sgt. Reid Frasier during AN/PRC Multiband tactical radio operations, Feb. 24 at Camp Smith Training Site during pre-mobilization training to be deployed to Guantanamo Bay, Cuba. Photo by Sgt. 1st Class Steven Petibone, 42nd Infantry Division.
The many "personalities" of our great galactic neighbor, the Andromeda galaxy, are exposed in this new composite image from NASA's Galaxy Evolution Explorer and the Spitzer Space Telescope.
The wide, ultraviolet eyes of Galaxy Evolution Explorer reveal Andromeda's "fiery" nature -- hotter regions brimming with young and old stars. In contrast, Spitzer's super-sensitive infrared eyes show Andromeda's relatively "cool" side, which includes embryonic stars hidden in their dusty cocoons.
Galaxy Evolution Explorer detected young, hot, high-mass stars, which are represented in blue, while populations of relatively older stars are shown as green dots. The bright yellow spot at the galaxy's center depicts a particularly dense population of old stars.
Swaths of red in the galaxy's disk indicate areas where Spitzer found cool, dusty regions where stars are forming. These stars are still shrouded by the cosmic clouds of dust and gas that collapsed to form them.Together, Galaxy Evolution Explorer and Spitzer complete the picture of Andromeda's swirling spiral arms. Hints of pinkish purple depict regions where the galaxy's populations of hot, high-mass stars and cooler, dust-enshrouded stars co-exist.
Located 2.5 million light-years away, the Andromeda is our largest nearby galactic neighbor. The galaxy's entire disk spans about 260,000 light-years, which means that a light beam would take 260,000 years to travel from one end of the galaxy to the other. By comparison, our Milky Way galaxy's disk is about 100,000 light-years across.
This image is a false color composite comprised of data from Galaxy Evolution Explorer's far-ultraviolet detector (blue), near-ultraviolet detector (green), and Spitzer's multiband imaging photometer at 24 microns (red).
This infrared image from NASA's Spitzer Space Telescope shows the Helix nebula, a cosmic starlet often photographed by amateur astronomers for its vivid colors and eerie resemblance to a giant eye.
The nebula, located about 700 light-years away in the constellation Aquarius, belongs to a class of objects called planetary nebulae. Discovered in the 18th century, these cosmic butterflies were named for their resemblance to gas-giant planets.
Planetary nebulae are actually the remains of stars that once looked a lot like our sun.
When sun-like stars die, they puff out their outer gaseous layers. These layers are heated by the hot core of the dead star, called a white dwarf, and shine with infrared and visible-light colors. Our own sun will blossom into a planetary nebula when it dies in about five billion years.
In Spitzer's infrared view of the Helix nebula, the eye looks more like that of a green monster's. Infrared light from the outer gaseous layers is represented in blues and greens. The white dwarf is visible as a tiny white dot in the center of the picture. The red color in the middle of the eye denotes the final layers of gas blown out when the star died.
The brighter red circle in the very center is the glow of a dusty disk circling the white dwarf (the disk itself is too small to be resolved). This dust, discovered by Spitzer's infrared heat-seeking vision, was most likely kicked up by comets that survived the death of their star. Before the star died, its comets and possibly planets would have orbited the star in an orderly fashion. But when the star blew off its outer layers, the icy bodies and outer planets would have been tossed about and into each other, resulting in an ongoing cosmic dust storm. Any inner planets in the system would have burned up or been swallowed as their dying star expanded.
The Helix nebula is one of only a few dead-star systems in which evidence for comet survivors has been found.
This image is made up of data from Spitzer's infrared array camera and multiband imaging photometer. Blue shows infrared light of 3.6 to 4.5 microns; green shows infrared light of 5.8 to 8 microns; and red shows infrared light of 24 microns.
Edited Spitzer Space Telescope image of the stars Cepheus C and Cepheus B.
Original caption: This image was compiled using data from NASA's Spitzer Space Telescope using the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer (MIPS) during Spitzer's "cold" mission, before the spacecraft's liquid helium coolant ran out in 2009. The colors correspond with IRAC wavelengths of 3.6 microns (blue), 4.5 microns (cyan) and 8 microns (green), and 24 microns (red) from the MIPS instrument.
The green-and-orange delta filling most of this image is a nebula, or a cloud of gas and dust. This region formed from a much larger cloud of gas and dust that has been carved away by radiation from stars.
The bright region at the tip of the nebula is dust that has been heated by the stars' radiation, which creates the surrounding red glow. The white color is the combination of four colors (blue, green, orange and red), each representing a different wavelength of infrared light, which is invisible to human eyes.
The massive stars illuminating this region belong to a star cluster that extends above the white spot.
On the left side of this image, a dark filament runs horizontally through the green cloud. A smattering of baby stars (the red and yellow dots) appear inside it. Known as Cepheus C, the area is a particularly dense concentration of gas and dust where infant stars form. This region is called Cepheus C because it lies in the constellation Cepheus, which can be found near the constellation Cassiopeia. Cepheus-C is about 6 light-years long, and lies about 40 light-years from the bright spot at the tip of the nebula.
The small, red hourglass shape just below Cepheus C is V374 Ceph. Astronomers studying this massive star have speculated that it might be surrounded by a nearly edge-on disk of dark, dusty material. The dark cones extending to the right and left of the star are a shadow of that disk.
The smaller nebula on the right side of the image includes a blue star crowned by a small, red arc of light. This "runaway star" is plowing through the gas and dust at a rapid clip, creating a shock wave or "bow shock" in front of itself.
Some features identified in the annotated image are more visible in the IRAC data alone.
The Jet Propulsion Laboratory in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate in Washington. Science operations are conducted at the Spitzer Science Center at Caltech in Pasadena. Space operations are based at Lockheed Martin Space Systems in Littleton, Colorado. Data are archived at the Infrared Science Archive housed at IPAC at Caltech. Caltech manages JPL for NASA.
The Crab Nebula is the shattered remnant of a massive star that ended its life in a massive supernova explosion. Nearly a thousand years old, the supernova was noted in the constellation of Taurus by Chinese astronomers in the year 1054 AD.
This view of the supernova remnant obtained by the Spitzer Space Telescope shows the infrared view of this complex object. The blue region traces the cloud of energetic electrons trapped within the star's magnetic field, emitting so-called "synchrotron" radiation. The yellow-red features follow the well-known filamentary structures that permeate this nebula. Though they are known to contain hot gasses, their exact nature is still a mystery that astronomers are examining.
The energetic cloud of electrons are driven by a rapidly rotating neutron star, or pulsar, at its core. The nebula is about 6,500 light-years away from the Earth, and is 5 light-years across.
This false-color image presents images from Spitzer's Infrared Array Camera (IRAC) and Multiband Imaging Photometer (MIPS) at 3.6 (blue), 8.0 (green), 24 (red) microns.
Sue's Photo (while my computer's being replaced, thanks Sue)
Got a bang up deal on this multiband mobile antenna. No more changing whips when changing bands?...anybody want to buy some gently used ham sticks? :-)
Surprisingly a substantial looking stainless steel mount was included!
Ordered this just prior to the computer failure.
An on-the-air report to follow in the near future.
Confeccionada con tejido elástico multibanda transpirable. Zona abdominal almohadi-llada. Contención, soporte y apoyo lumbar. Cómodas y confortables. Post-quirúrgica y post-parto.
Para más información: www.exclusivasiglesias.com/es/product/ortesis-tronco/band...
NASA's Spitzer Space Telescope has captured stunning infrared views of the famous Andromeda galaxy to reveal insights that were only hinted at in visible light.
The multi-wavelength view of Andromeda combines images taken at 24 microns (blue), 70 microns (green), and 160 microns (red). Using all three bands from the multiband imaging photometer allows astronomers to measure the temperature of the dust by its color. The warmest dust is brightest at 24 microns while the coolest is most evident at 160 microns. The blue/white areas have the hottest dust, as seen in the bulge and in the star-forming areas along the arms. The cooler dust floating further out in the ring and arms are in the redder regions.
The data were taken on August 25, 2004, the one-year anniversary of the launch of the space telescope. The observations have been transformed into this remarkable gift from Spitzer -- the most detailed infrared image of the spectacular galaxy to date.
Edited Spitzer Space Telescope PR image of the Cepheus C and Cepheus B region and associated nebula. Color/processing variant.
Image source: photojournal.jpl.nasa.gov/catalog/PIA23126
Original caption: This image was compiled using data from NASA's Spitzer Space Telescope using the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer (MIPS) during Spitzer's "cold" mission, before the spacecraft's liquid helium coolant ran out in 2009. The colors correspond with IRAC wavelengths of 3.6 microns (blue), 4.5 microns (cyan) and 8 microns (green), and 24 microns (red) from the MIPS instrument.
The green-and-orange delta filling most of this image is a nebula, or a cloud of gas and dust. This region formed from a much larger cloud of gas and dust that has been carved away by radiation from stars.
The bright region at the tip of the nebula is dust that has been heated by the stars' radiation, which creates the surrounding red glow. The white color is the combination of four colors (blue, green, orange and red), each representing a different wavelength of infrared light, which is invisible to human eyes.
The massive stars illuminating this region belong to a star cluster that extends above the white spot.
On the left side of this image, a dark filament runs horizontally through the green cloud. A smattering of baby stars (the red and yellow dots) appear inside it. Known as Cepheus C, the area is a particularly dense concentration of gas and dust where infant stars form. This region is called Cepheus C because it lies in the constellation Cepheus, which can be found near the constellation Cassiopeia. Cepheus-C is about 6 light-years long, and lies about 40 light-years from the bright spot at the tip of the nebula.
The small, red hourglass shape just below Cepheus C is V374 Ceph. Astronomers studying this massive star have speculated that it might be surrounded by a nearly edge-on disk of dark, dusty material. The dark cones extending to the right and left of the star are a shadow of that disk.
The smaller nebula on the right side of the image includes a blue star crowned by a small, red arc of light. This "runaway star" is plowing through the gas and dust at a rapid clip, creating a shock wave or "bow shock" in front of itself.
Some features identified in the annotated image are more visible in the IRAC data alone, found here.
The Jet Propulsion Laboratory in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate in Washington. Science operations are conducted at the Spitzer Science Center at Caltech in Pasadena. Space operations are based at Lockheed Martin Space Systems in Littleton, Colorado. Data are archived at the Infrared Science Archive housed at IPAC at Caltech. Caltech manages JPL for NASA.
For more information on Spitzer, visit:
www.nasa.gov/spitzer and www.spitzer.caltech.edu/
Image Credit:
NASA/JPL-Caltech
Image Addition Date:
2019-05-30
he sousaphone players of the UMass Marching Band play for the audience of Friday's multibands concert as they exit.
Photo by Bryn Rothschild-Shea
This image of the Jupiter-family comet Johnson was taken with Spitzer's multiband imaging photometer (MIPS) at a wavelength of 24 microns.
The fan-shaped region that stretches upward from Johnson's nucleus (yellow ball in the middle) represents the dust "tail" of the comet. Dust tails are created when small particles from a comet are swept backward by the Sun's radiation pressure.
The long thin trail of emission that precisely follows the orbit of the comet is believed to be a debris trail of solid material, ranging from millimeters to centimeters in size. Such particles, called meteoroids, are the same size as those that appear in meteor showers when they enter the Earth's atmosphere. Because any trace of water would evaporate in the Sun's heat, astronomers do not believe that debris trails contain ice.
These meteoroids have evaded detection in previous comet images because they are relatively faint in visible light. At mid-infrared wavelengths, meteoroids give off infrared radiation. Any object with an internal temperature higher than absolute zero (-273.5 degrees Celsius or zero Kelvin) produces thermal radiation; objects in the inner solar system give off radiation at mid-infrared wavelengths. Consequently, MIPS allows astronomers to study the production of meteoroids by comets whose orbits do not cross the Earth's path.
Spitzer images have also shown that there is more mass in the debris trails of comets than in their dust tails and gases.
The results of Spitzer's observations are consistent with those obtained by space probes that encountered comet Halley in 1986. In Halley's case, large particles produced by the comet were not only detected, but caused significant damage to the probes.
I got my "General" class amateur radio license in January, but had only been using a short-distance (up to 30 miles) VHF/UHF handheld radio until recently. I got this HF/VHF/UHF multiband radio a couple weeks ago to operate on the HF bands (160m to 6m wavelength). Even though my antenna is installed temporarily indoors through my second floor bedrooms, it is working quite well. My farthest contact is Germany, over 4,000 miles away, using only 75W of power, on the 17m band in phone SSB mode.
Esta es la antena principal, Butternut multibanda, que tiene 10m, 15m, 20m, 30m, 40m y 80 metros, con la cual me comunico con Chile y el resto del mundo. Con esta antena he tenido contactos tan lejano como Australia, Japón, Chipré, Europa en general, también con Sud África, entre otros países. Por supuesto que también he tenido contactos con América en general.
Band alumni, parents, and friends gathered before Multibands to enjoy great company, drinks, and hors d’oeuvres. The 2017 recipients of the Band Alumni Scholarship and the 2017 Minuteman Band Hall of Fame class were honored and attendees got the first look at a special portrait of legendary former Minuteman Band announcer Jim MacRostie — as well as the band’s new uniforms!
That old vintage collection :)
Yup, those are 8-Track tapes lurking in the background there..
(I only have the Soviet LELL Parametric Equalizer, Yamaha Compressor, Yamaha Multiband Distortion & Yamaha Graphic Equalizer left, the others are long gone)
Edited Spitzer Space Telescope image of the region around Rho Ophiuchi, showing lots of nebulae and stars. Color/processing variant.
Original caption: Newborn stars peek out from beneath their natal blanket of dust in this dynamic image of the Rho Ophiuchi dark cloud from NASA's Spitzer Space Telescope. Called "Rho Oph" by astronomers, it's one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth.
Rho Oph is a complex made up of a large main cloud of molecular hydrogen, a key molecule allowing new stars to form from cold cosmic gas, with two long streamers trailing off in different directions. Recent studies using the latest X-ray and infrared observations reveal more than 300 young stellar objects within the large central cloud. Their median age is only 300,000 years, very young compared to some of the universe's oldest stars, which are more than 12 billion years old.
This false-color image of Rho Oph's main cloud, Lynds 1688, was created with data from Spitzer's infrared array camera, which has the highest spatial resolution of Spitzer's three imaging instruments, and its multiband imaging photometer, best for detecting cooler
materials. Blue represents 3.6-micron light; green shows light of 8 microns; and red is 24-micron light. The multiple wavelengths reveal different aspects of the dust surrounding and between the embedded stars, yielding information about the stars and their birthplace.
The colors in this image reflect the relative temperatures and evolutionary states of the various stars. The youngest stars are surrounded by dusty disks of gas from which they, and their potential planetary systems, are forming. These young disk systems show up as red in this image. Some of these young stellar objects are surrounded by their own compact nebulae. More evolved stars, which have shed their natal material, are blue.
Stewart Warner Tombstone tube radio (Hammond Museum) - this has multicolour - multiband edge lit dial -beautiful when lit
This glowing emerald nebula seen by NASA's Spitzer Space Telescope has been sculpted by the powerful light of giant "O" stars. O stars are the most massive type of star known to exist.
Named RCW 120, this region of hot gas and glowing dust can be found in the murky clouds encircled by the tail of the constellation Scorpius. The ring of dust is actually glowing in infrared colors that our eyes cannot see, but show up brightly when viewed by Spitzer's infrared detectors. At the center of this ring are a couple of giant stars whose intense ultraviolet light has carved out the bubble, though they blend in with other stars when viewed in infrared.
This bubble is far from unique; Spitzer has found that such bubbles are common and can be found around O stars throughout our Milky Way galaxy. The small objects at the lower right area of the image may themselves be similar regions seen at much greater distances across the galaxy.
Rings like this are so common in Spitzer's observations that astronomers have even enlisted the help of the public to help them find and catalog them all. Anyone interested in joining the search as a citizen scientist can visit "The Milky Way Project," part of the "Zooniverse" of public astronomy projects, at www.milkywayproject.org/ .
RCW 120 can be found slightly above the flat plane of our galaxy, located toward the bottom of the picture. The green haze seen here is the diffuse glow of dust from the galactic plane.
This is a three-color composite that shows infrared observations from two Spitzer instruments. Blue represents 3.6-micron light and green shows light of 8 microns, both captured by Spitzer's infrared array camera. Red is 24-micron light detected by Spitzer's multiband imaging photometer.
This swirling landscape of stars is known as the North America nebula. In visible light, the region resembles North America, but in this new infrared view from NASA's Spitzer Space Telescope, the continent disappears..
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Where did the continent go? The reason you don't see it in Spitzer's view has to do, in part, with the fact that infrared light can penetrate dust whereas visible light cannot. Dusty, dark clouds in the visible image become transparent in Spitzer's view. In addition, Spitzer's infrared detectors pick up the glow of dusty cocoons enveloping baby stars..
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Clusters of young stars (about one million years old) can be found throughout the image. Slightly older but still very young stars (about 3 to 5 million years) are also liberally scattered across the complex, with concentrations near the "head" region of the Pelican nebula, which is located to the right of the North America nebula (upper right portion of this picture)..
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Some areas of this nebula are still very thick with dust and appear dark even in Spitzer's view. For example, the dark "river" in the lower left-center of the image -- in the Gulf of Mexico region -- are likely to be the youngest stars in the complex (less than a million years old)..
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The Spitzer image contains data from both its infrared array camera and multiband imaging photometer. Light with a wavelength of 3.6 microns has been color-coded blue; 4.5-micron light is blue-green; 5.8-micron and 8.0-micron light are green; and 24-micron light is red.