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Es curiosa la percepción que a veces se tiene respecto al plumaje, la envergadura o al tamaño de las aves que nos proponemos fotografiar. Este tema se puede llevar al extremo con determinadas especies como los moritos, estos preciosos Ibis cada vez más frecuentes y con mayores posibilidades de fotografiar. Negros en la distancia y bellos y polícromos en la cercanía, aún más en esta epoca del año.
He estado estas últimas semanas con esta especie y con las colaterales.... toca cambio de aires y de nuevos retos. A disfrutar del calor, las calimas, las riveras y charcos que dan vida a la fauna en estos meses
Un saludo a tod@s!!!
mientras unos viven el kaoz de la gran ciudad , yo disfruto de la montaña, de ese atardecer, de ese silencio, de esa calma ...de ese no se que... que lo hace unico. SIEMPRE
♫♪LA VIDA NO VALE NADA – Pablo Milanés♫♪.
La gente dice:
«Pobres tiene que haber siempre»,
y se quedan tan anchos
tan estrechos de miras,
tan vacíos de espíritu,
tan llenos de comodidad.
Yo aseguro
con emoción
que en un próximo futuro
sólo habrá pobres de vocación.
Gloria Fuertes
No sé si Gloria seguiría pensando hoy día, en que parece ser cada vez mayor la brecha entre ricos y pobres, esas últimas palabras…
Macro 1X con apilamiento de foco por control de anillo de enfoque
Macro 1X by focus stacking using the focus ring control
Ingredientes:
-Nikon D600 + Nikor 105mm macro 1X
-Helicon Remote para control automático de la pila de foco mediante el anillo de enfoque (por medio de USB)
-Helicon Soft para apilamiento de foco (36 shots, Method B, R=4, S=2)
-Helicon lo puedes bajar a prueba durante 1 mes gratis, o una licencia para un año por 50€, controla casi todas las Nikon y Canon mediante USB. Existen otros proveedores de soft para stacking (apilamiento), p. ej. Zerene, ControlMyNikon o Canon, Combine Z, etc
-Opcional: impresora 3D (Up Plus 2) para la fabricación de focos, soportes, mesa de trabajo, etc. Puedes utilizar el sencillo 123D Design (free soft) para diseñar las piezas.
Receta:
-Montamos el bodegón con sujeto y fondo
-Lo iluminamos con 4 o 5 micro-focos de leds. Los focos se pueden diseñar e imprimir utilizando una impresora 3D y después montar los leds (alta luminosidad y 5300K), la alimentación es de 12vdc para grupos de 3 o 4 leds. La ventaja frente al uso de flash, es que se pueden dirigir los focos y componer la iluminación antes del disparo, además del volumen que se consigue jugando con la iluminación.
-Disparamos las fotografías utilizando, p. ej., Helicon Remote: Helicon controla el enfoque con el movimiento del anillo de enfoque antes de disparar cada foto, todo el proceso de toma de fotos es automático, se pueden ver videos en youtube
-Para 1X se necesitan de 20 a 100 fotos, según valor de f, focal utilizada y profundidad de campo necesaria, lo calcula el soft automáticamente. Se suele utilizar el punto dulce de la lente (normalmente en el entorno de f5.6) para optimizar los resultados
-Apilamos el stack de n fotografías utilizando Helicon Soft
-Utilizamos Lightroom o similar para eliminar “halos” y “artefactos”
-Una vez se tiene práctica, todo el proceso puede durar 15 min
pepo
/ POOR ENGLISH
Macro 1X by focus stacking using the focus ring control
How do you can do it :
Ingredients:
-Nikon D600 + 105mm macro nikor 1X
-Helicon Remote control for automatic focus stack using the camera focus ring (using USB)
-Helicon Soft Focus Stacking (36 shots, Method B, R = 4, S = 2)
-Helicon: You can download a free trial for 1 month, or a license for a year for € 50, it controls almost many Nikon and Canon via USB. There are other suppliers of soft for stacking, p. ex. Zerene, ControlMyNikon or Canon, Combine Z, etc.
-optional: 3D (Up Plus 2) printer to manufacture light bulbs, brackets, desk, etc. You can use the friendly 123D Design (free soft) for pieces designing.
Recipe:
-Ilumination with 4 or 5 micro-LED bulbs. The lighters can be designed and printed using a 3D printer and then mount the LED´s (high brightness and 5300K), the power is 12VDC for groups of 3 or 4 LEDs. The advantage over use of flash, is that you can positioning the lights and lighting make up before shooting, in addition to the volume to be achieved by playing with these lighting.
-Shot photographs using, p. eg Helicon Remote. Helicon controls the approach to the movement of the focus ring before the photo shot, the whole process of taking pictures is automatic, you can watch videos on youtube
-For 1X do you needed 20-100 photos, depending on value of f, focal and deep of field needed, automatically calculated by the soft. Often used the sweet spot of the lens (usually in the vicinity of f5.6) to optimize results
-Now we stack of shots using Helicon Soft
-We can use Lightroom or the like to remove "halos" and "artifacts"
-Once you have practice, the whole process can take 15 min
-And sorry my English, please.
pepo
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Ojalá hubiese grabao toas las fotos y tos los videos que habías enviado
Y esta noche mi mente te hubiese visitado
Ya que no te consigo por tenerme bloqueado
¿Dónde estarás que ya no respondes?
¿En qué cama nueva te escondes?
¿Y cómo se llama esa cabrona que ahora gritas su nombre?
Dime por qué no llamas,
Si yo sé que piensas en mi cuando estás con ella en la cama
Fumo pa no pensarte y me sale tu holograma
No olvido cómo mama y cómo te daba en toas las poses
El se hizo completo porque tenía el corazón roto
Borré los videos del carrete, pero en mi mente quedó tu foto
Solo dime dónde es que estás, que esto me está volviendo loca
A host of astronomical objects are scattered across this image from the NASA/ESA Hubble Space Telescope. Background galaxies ranging from stately spirals to fuzzy ellipticals are strewn across the image, while a smattering of bright foreground stars are closer to home. In the center of the image, the vague shape of the small galaxy UGC 7983 appears as a hazy cloud of light. UGC 7983 is around 30 million light-years from Earth in the constellation Virgo. It is a dwarf irregular galaxy – a type thought to be similar to the very earliest galaxies in the universe.
This image also reveals a relatively nearby astronomical interloper. A minor asteroid in our own solar system streaks across the upper left-hand side of the image. The asteroid’s trail is visible as four streaks of light separated by small gaps. These streaks of light represent the four separate exposures that were combined to create this image. The small gaps between each observation reflect filter changes inside Hubble’s Advanced Camera for Surveys between exposures.
Capturing an asteroid was a fortunate side effect of a larger effort to observe every known galaxy close to the Milky Way. Hubble had imaged roughly 75% of all the Milky Way’s near galactic neighbors, when a group of astronomers proposed using the gaps between longer Hubble observations to capture images of the remaining 25%. The project was an elegant efficient way to fill gaps in Hubble's observing schedule and in our knowledge of nearby galaxies.
Image Credit: ESA/Hubble & NASA, R. Tully
#NASA #NASAMarshall #NASAGoddard #ESA #HubbleSpaceTelescope #HST #astrophysics #galaxy
This NASA/ESA Hubble Space Telescope observation has captured the galaxy CGCG 396-2, an unusual multi-armed galaxy merger which lies around 520 million light-years from Earth in the constellation Orion.
This observation is a gem from the Galaxy Zoo project, a citizen science project in which hundreds of thousands of volunteers classified galaxies to help scientists solve a problem of astronomical proportions — how to sort through the vast amounts of data generated by robotic telescopes. Following a public vote, a selection of the most astronomically intriguing objects from the Galaxy Zoo were selected for follow-up observations with Hubble. CGCG 396-2 is one such object, and was captured in this image by Hubble’s Advanced Camera for Surveys.
The Galaxy Zoo project originated when an astronomer was set an impossibly mind-numbing task; classifying more than 900 000 galaxies by eye. By making a web interface and inviting citizen scientists to contribute to the challenge, the Galaxy Zoo team was able to crowdsource the analysis, and within six months a legion of 100 000 volunteer citizen astronomers had contributed more than 40 million galaxy classifications.
Since its initial success, the Galaxy Zoo project and its successor projects have contributed to more than 100 peer-reviewed scientific articles and led to a rich variety of intriguing astronomical discoveries above and beyond their initial goals. The success of the project also inspired more than 100 citizen science projects on the Zooniverse portal, ranging from analysing data from the ESA Rosetta spacecraft's visit to Comet 67P/Churyumov–Gerasimenko to counting killer whales around remote Alaskan islands!
Credits: ESA/Hubble & NASA, W. Keel; CC BY 4.0
Ariane 5 flight VA254 with the Eutelsat Quantum and Star One D2 satellites is now on the launch par of the ELA-3 (Ensemble de Lancement Ariane) Ariane 5 launch complex, at Europe's Space Port in Kourou, French Guyana on 29 July 2021.
Quantum, the ESA Partnership Project with Eutelsat, Airbus and Surrey Satellite Technology Ltd, is a pioneering mission preparing the way for the next generation of telecommunications satellites, which will be more flexible by design and so more adaptable to customer needs once in orbit.
Quantum is a shift from custom-designed satellite with one-off payloads to a more generic approach, resulting in unprecedented in-orbit reconfigurability in coverage, frequency and power, allowing complete mission rehaul, including orbital position.
ESA partnered with satellite operator Eutelsat and manufacturer Airbus to design this programme, in response to today's market requiring satellites to be able to respond to changes in geographical or performance demand, either during manufacturing or after launch. This will enable the operator to address emerging business opportunities — even those that appear after it has ordered a satellite.
Such ESA Partnership Projects maximise the benefits to industry thanks to an efficient, co-managed approach that is tailored to commercial best practice.
Credits:
Title :
Eutelsat Quantum on the launch pad
Credit line image :
ESA - S. Corvaja
Cassini ended its 13-year mission at Saturn on 15 September 2017 when it plunged into the gas giant's atmosphere, but the NASA/ESA Hubble Space Telescope is still keeping an eye on the ringed planet.
This is a composite image taken by Hubble on 6 June 2018 showing a fully-illuminated Saturn and its rings, along with six of its 62 known moons. The visible moons are (from left to right) Dione, Enceladus, Tethys, Janus, Epimetheus and Mimas (click here for an annotated version). Dione is the largest moon in the picture, with a diameter of 1123 km, compared to the smallest, oddly-shaped Epimetheus with a diameter around 116 km.
During Cassini’s mission, Enceladus was identified as one of the most intriguing moons, with the discovery of water vapour jets spewing from the surface implying the existence of a subsurface ocean. Icy moons with subsurface oceans could potentially offer the conditions to harbour life, and understanding their origins and properties are essential for furthering our knowledge of the Solar System. ESA's JUpiter ICy moons Explorer (Juice), due to launch in 2022, aims to continue this theme by studying Jupiter's ocean-bearing moons: Ganymede, Europa, and Callisto.
The Hubble image shown here was taken shortly before Saturn's opposition on 27 June, when the Sun, Earth and Saturn were aligned so that the Sun fully illuminated Saturn as seen from Earth. Saturn's closest approach to Earth occurs around the same time as opposition, which makes it appear brighter and larger and allows the planet to be imaged in greater detail.
In this image the planet’s rings are seen near their maximum tilt towards Earth. Towards the end of Cassini’s mission, the spacecraft made multiple dives through the gap between Saturn and its rings, gathering spectacular data in this previously unchartered territory.
The image also shows a hexagonal atmospheric feature around the north pole, with the remnants of a storm, seen as a string of bright clouds. The hexagon-shaped cloud phenomenon is a stable and persistent feature first seen by the Voyager 1 space probe when it flew past Saturn 1981. In a study published just last week, scientists using Cassini data collected between 2013 and 2017, as the planet approached northern summer, identified a hexagonal vortex above the cloud structure, showing there is still much to learn about the dynamics of Saturn’s atmosphere.
The Hubble observations making up this image were performed as part of the Outer Planet Atmospheres Legacy (OPAL) project, which uses Hubble to observe the outer planets to understand the dynamics and evolution of their complex atmospheres. This was the first time that Saturn was imaged as part of OPAL. This image was first published on 26 July.
Credits: NASA, ESA, A. Simon (GSFC) and the OPAL Team, and J. DePasquale (STScI); CC BY 4.0
The NASA/ESA Hubble Space Telescope has observed the supernova remnant named 1E 0102.2-7219. Researchers are using Hubble’s imagery of the remnant object to wind back the clock on the expanding remains of this exploded star in the hope of understanding the supernova event that caused it 1700 years ago.
The featured star that exploded long ago belongs to the Small Magellanic Cloud, a satellite galaxy of our Milky Way located roughly 200 000 light-years away. The doomed star left behind an expanding, gaseous corpse — a supernova remnant — known as 1E 0102.2-7219.
Because the gaseous knots in this supernova remnant are moving at different speeds and directions from the supernova explosion, those moving toward Earth are coloured blue in this composition and the ones moving away are shown in red. This new Hubble image shows these ribbons of gas speeding away from the explosion site at an average speed of 3.2 million kilometres per hour. At that speed, you could travel to the Moon and back in 15 minutes.
Researchers have studied the Hubble archive looking for visible-light images of the supernova remnant and they have analysed the data to calculate a more accurate estimate of the age and centre of the supernova blast.
According to their new estimates, light from this blast arrived at Earth 1700 years ago, during the decline of the Roman Empire. This supernova would only have been visible to inhabitants of Earth’s southern hemisphere. Unfortunately, there are no known records of this titanic event. Earlier studies proposed explosion dates of 2000 and 1000 years ago, but this new analysis is believed to be more robust.
To pinpoint when the explosion occurred, researchers studied the tadpole-shaped, oxygen-rich clumps of ejecta flung out by this supernova blast. Ionised oxygen is an excellent tracer because it glows brightest in visible light. By using Hubble’s powerful resolution to identify the 22 fastest moving ejecta clumps, or knots, the researchers determined that these targets were the least likely to have been slowed down by passage through interstellar material. They then traced the knots’ motion backward until the ejecta coalesced at one point, identifying the explosion site. Once that was known, they could calculate how long it took the speedy knots to travel from the explosion centre to their current location.
Hubble also measured the speed of a suspected neutron star — the crushed core of the doomed star — that was ejected from the blast. Based on the researchers’ estimates, it must be moving at more than 3 million kilometres per hour from the centre of the explosion to have arrived at its current position. The suspected neutron star was identified in observations with the European Southern Observatory’s Very Large Telescope in Chile, in combination with data from NASA’s Chandra X-ray Observatory.
Credits: NASA, ESA, and J. Banovetz and D. Milisavljevic (Purdue University); CC BY 4.0
Mount Aso, the largest active volcano in Japan, is featured in this image captured on 1 January 2022 by the Copernicus Sentinel-2 mission.
Located in the Kumamoto Prefecture on the nation’s southernmost major island of Kyushu, Mount Aso rises to an elevation of 1592 m. The Aso Caldera is one of the largest calderas in the world, measuring around 120 km in circumference, 25 km from north to south and 18 km from east to west.
The caldera was formed during four major explosive eruptions from approximately 90 000 to 270 000 years ago. These produced voluminous pyroclastic flows and volcanic ash that covered much of Kyushu region and even extended to the nearby Yamaguchi Prefecture.
The caldera is surrounded by five peaks known collectively as Aso Gogaku: Nekodake, Takadake, Nakadake, Eboshidake, Kishimadake. Nakadake is the only active volcano at the centre of Mount Aso and is the main attraction in the region. The volcano goes through cycles of activity. At its calmest, the crater fills with a lime green lake which gently steams, but as activity increases, the lake boils off and disappears. The volcano has been erupting sporadically for decades, most recently in 2021, which has led to the number of visitors drop in recent years.
Not far from the crater lies Kusasenri: a vast grassland inside the mega crater of Eboshidake. Active just over 20 000 years ago, the crater has been filled with volcanic pumice from other eruptions, with magma still brewing a few kilometres below. Rainwater often accumulates on the plain forming temporary lakes. The pastures are used for cattle raising, dairy farming and horse riding.
One of the nearest populated cities is Aso, visible around 8 km north from the volcano, and has a population of around 26 000 people.
There are 110 active volcanoes in Japan, of which 47 are monitored closely as they have erupted recently or shown worrying signs including seismic activity, ground deformation or emissions of large amounts of smoke.
Satellite data can be used to detect the slight signs of change that may foretell an eruption. Once an eruption begins, optical and radar instruments can capture the various phenomena associated with it, including lava flows, mudslides, ground fissures and earthquakes. Atmospheric sensors on satellites can also identify the gases and aerosols released by the eruption, as well as quantify their wider environmental impact.
The image is also featured on the Earth from Space video programme.
Credits: contains modified Copernicus Sentinel data (2022), processed by ESA, CC BY-SA 3.0 IGO