In his latest timelapse video, AstroFotografia, Miguel Claro explores Portugal’s exquisite night skies. The film brings together dozens of images. Miguel Claro is a Portuguese professional photographer, author and a the astronomy and photography Portuguese book “Astrofotograﬁa – Imagens à luz das. Followers, Following, Posts – See Instagram photos and videos from Miguel Claro Astrophotography (@miguel_claro).
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When we first look at the night sky, we can not distinguish the color of each star with our own eyes, although, if we record in a long exposure sequence the path of each star, due to the motion of rotating Earth and consequently the rotation of celestial sphere, a starry trailed sky can reveal much of our colorful Universe. Each color is directly related to the type and temperature of each star. The hottest stars, are showing a blue color, but in opposition the coolest, can reveal an orange-reddish color.
In astronomy, stellar classification is the classification of astrofotobrafia based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with absorption lines.
Each line indicates an ion of a certain chemical element, with the line strength indicating the abundance of that ion. The relative abundance of the different ions varies with the temperature of the photosphere. Each letter class is then subdivided using a numeric digit with 0 being hottest and 9 being coolest e. A8, A9, F0, F1 form a sequence from hotter to cooler.
The sequence has been expanded with classes for other stars and star-like objects that do not fit in the classical system, asrofotografia as class D for white dwarfs and class C for carbon stars. In the MK system, a luminosity class is added to the spectral class using Roman numerals. The full spectral class for the Sun is then G2V, indicating a main-sequence star astrooftografia a temperature atrofotografia 5, K.
Source and more info: Already during the 20th century, between the 30s and 40s, a new direction of industrial exploration took place: It has been a sought after place for the extraction of ores since antiquity, with evidence of gold, silver and copper mining in the pre-Roman and Roman times.
Dominic was explored in various historical periods, namely: During this period, the work was done in the open air up to meters deep, with work continued through wells and galleries up to meters. Over years of regular exploration, more than 20 million tons of materials were removed from the site, producing about The heaps are composed of different materials with high levels of metals, such as slag and ash, whose leaching through the rainwater leads to the production astrofotogravia acid mine drainage, usually with an ocher or reddish color.
It combines extensive monastic ruins with a stunning natural setting in the Wicklow Mountains. The beauty and tranquility of the lakes and glacial-carved valley no doubt appealed to St Kevin, a hermit monk, who founded the monastic site near the Lower Lake in the 6th Century.
Most of the buildings that survive today date from the 10th through 12th centuries. Despite attacks by Vikings over the years, Glendalough thrived as one of Irelands great ecclesiastical foundations and schools of learning until the Normans destroyed the monastery in and the dioceses of Glendalough and Dublin were united.
The settlement was destroyed by English forces in A reconstruction program was started in and today the valley boasts a visitor centre, astrofotoggrafia trails, walkways and rock climbing. This church is unusual, it has a round tower or belfry with conical cap integrated with the church. Some sources suggest that it was part of the astrofotograafia structure, others claim it originally had a nave only with an entrance at the west end.
The upper clafo of the gable window can be seen above what became the chancel arch, when the chancel now missing and the sacristy were added later. The steep roof has corbelled stones, similar to cclaro atSt. It is supported internally by a semi-circular vault.
The church had a wooden upper floor and access to the roof chamber was through an opening at the western end of the vault. Na imagem podemos ver um startrail acima da igreja celta de St. Kevin, em Glendalough, Irlanda. For many people on Earth enjoying the night sky is an holiday experience, although, the artificial lights coming from the neighbor cities can disturb this experience, but a long exposure photo can register more stars than your own eyes can see at a glance.
Surrounded by coconut trees spread along Punta Cana beach, in Dominican Republic, a partly cloudy sky reflects the light of neighbor resorts, while above the path of each star can reveal their own true color. A partly cloudy sky reflects the lights of Punta Cana beach, Dominican Republic, in what seems to be an explosion of light while in the background sky, a starry vortex surrounding Polaris remember us that Earth Rotation never ends.
A startrail captured over the region of Scorpius constellation above the coconut trees spread along Punta Cana beach, in Dominican Republic. The Gradual consolidation of Roman power led to the establishment of a substantial Roman town in the 1st century.
Chestnut cultivation — Replacing the place dominance of oak is likely to have been introduced at this time. The Alentejo region, meanwhile, was criss-crossed with efficient Roman roads, providing links to the wider Empire.
Fine wares found at the site Ammaia suggest que Ammaia nobility had access to luxury glassware and jewelery, while archeology has Revealed that marble for the forum was imported from across the Empire. These items are now in collections such as those of the British Museum. Many of the excavations were concentrated over the obvious ruins or where there was evidence of subterranean structures associated with a Roman presence.
The town plan follows a regular rectangular layout organized along two main perpendicular street axes, linking the central forum to its main gates. A city wall surrounds a roughly rectangular area of some 20 hectares.
Several extramural buildings, cemeteries and roads constitute the suburban area. One of the remaining ruins from the Southern Gate Tower of the Roman City of Ammaia, in a cloudy moonlight scene, during the passage of the International Space Station above the skies. At the right side of the moon it is visible the planet Venus.
Endovelicus sanctuary of Rocha da Mina, in a winter sky by the moonlight, which highlights the constellation of Orion and astrlfotografia star Sirius, the brightest of the celestial sphere left image and a startrail pointing north right image.
Endovelicus was a mibuel healing supreme god, thus a god of Medicine.
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Feeling the power of being in contact with the wild side of nature, in the middle of cows, bulls, hay, cork oaks and olive trees, under a shy starry sky on a clear moonlit night Sky of Telheiro. But astrkfotografia of these stars is really special, for having humans on board at all times, is this the International Space Station ISSthe more evident by its intensity, moving at a speed of View from inside the Dolmen of Olival da Pega, a human silhouette represents the evolution of miguwl from prehistoric times, the heavens contemplation and the importance of astronomy, as the oldest science in the world.
In the background, at the left side of Yepun VLT Telescope, we can see the Large and Small Magellanic Clouds draged, while in center right of the image, the Zodiacal Light is coming up above the Milky Way that lies behind the horizon of this startrail sky.
The four separate optical telescopes are known as Antu, Kueyen, Melipal and Yepun, which are all words for astronomical objects in the Mapuche language, with optical elements that can combine them into an astronomical interferometer VLTIwhich is used to resolve small objects. The interferometer is complemented by four movable Auxiliary Telescopes ATs of 1. With one such telescope, images of celestial objects as faint as magnitude 30 can be obtained in a one-hour astrofotografiw.
This corresponds to seeing objects astrofotogeafia are four billion four thousand million times fainter than what can be seen with the unaided eye. With this kind of precision the VLTI can reconstruct images with an angular resolution of milliarcseconds, equivalent to distinguishing the two headlights of a car at the distance clarl the Moon.
In the left side of the sky we can see the trail of Sirius star.
Biography of Miguel Claro
Moving to the right in the center of the image, is located the Canopus startrail, as well the draged motion of Large and Small Magellanic Clouds. Below them, the rotational motion of Earth helped to find with precision the right position of the South Pole in the sky.
At left, we also can see the light coming from the moonset. After a long time of burning my mind with some new ideias, I figured out how I could do it, developing what I think is, a totally new astrophotographic technique never applied before, and where I can show in real time the sky rotating around another star, simulating the shifting of Earth Axis even being inside our Earth. A consequence of the precession is a changing pole star. But with the crescent light pollution is Increasingly difficult to distinguish the few bright stars in the middle of cities, so near the year 14the brilliant Vega in the constellation Lyra, is touted as the best north star.
When Polaris becomes the north star again around 27, due to its proper motion it then will be farther away from the pole than it is now, while in 23, BC it came closer to the pole. What I did to create the both startrails and time lapse images, was to use 2 mountings Vixen Polarie, one to pointing to the actual Polaris Axis and making all the stars staying fixed, but using another Polarie attached to the first one, I could simulate again the Earth Axis Rotation using the sideral motion inverted I mean, like if I was in the south pole, near the batteries you can switch the button to N north or S south motion.
But I had special carefully with some things. I also used the Live View magnifier with the grid option to have a more precise result.
Precession changes the direction of the Earth axis from Polaris to Vega on the celestial sphere, but the positions where the axis crosses the surface of Earth will not change by astrofotogafia. So the north on the Earth from the observation point will not change, and the latitude of the observation point will not change too. Tracking deeply the stars simultaneously revealing the different brightness intensity and color of each star that lies around the North Star Polaris, which is 0.
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If our ancestors who braved storms in uncharted waters to prove that the earth was really round, had the opportunity to make a simple photograph like that, then would have the living proof that the Earth was round without having run that risk, thus prove the curvature of stellar trails Sky of Barrancos. In Noudar, life presents itself in a state of wilderness and absolute purity. astrfotografia
More about Alqueva Dark Sky Axtrofotografia Starlight destinations are visitable places characterized by excellent quality for the contemplation of starry skies, and the practice of tourist activities based on this resource. Rasto de estrelas profundo, revelando simultaneamente as diferentes intensidades de brilho e cor de cada uma das estrelas que se encontra a circundar a Estrela Polar, que se encontra a 0,7 graus do Norte real.
Igreja Nossa Senhora do Desterro. Its construction was finished inadtrofotografia the reign of Don Dinis. Good and plentiful farming land and cattle grazing fields can also be found near the castle.
Above the Moon, stands the celestial equator, with the stars of Orion. This shot was captured from the top of a building in Almada, so we can see around the horizon, the city lights from Lisbon, Almada and Seixal Portugalwhere we can see the smoke of fireworks and astofotografia Very Lights that were fired during the celebrations of the New Year!
Taken in between A northen startrail around the Tower astrodotografia Noudar Castle.
The Polaris is hiden behind the walls of the Castle. A startrail in the Orion sky region, above the Lodging gate of the Noudar starry sky Park. Captured in the top of Madeira island, in Pico do Arieiro, at about meters high, from left to right, is visible above the horizon and between the passing clouds, the awtrofotografia coming from neighboring island of Porto Santo.
Sum of asrrofotografia images. Total time integration of 77 minutes. Tracking the trails of the night sky with the Telescope. Image taken in Alentejo. In this picture captured in Alentejo, we can see the main stars of Big Dipper, Ursa Minor and Cassiopeia, scratching the colorful skies of a celestial blue in a twilight of moonlight.
In the land, a house full of life, space and water, is the ideal spot for a skygazer who loves to appreciate the beauty of Alentejo skies. A mibuel black and white startrail showing the earth rotation, above the land full of olive trees, captured in front of the Dark Sky Alqueva advertising outdoor, in Monsaraz. The region of the Ashrofotografia Lake Alqueva in Alentejo, Portugal is a wonderful place to see the stars, constellations and distant galaxies such as the Milky Way.
In Alqueva the sky has good atmospheric conditions for stargazing most of the astrofogografia. Such skies are disappearing in Europe, where most of the population has no longer the privilege to observe an unpolluted sky.
Taken in at