user_mobilelogo
Facebook
Dienstag, 30 Mai 2017 12:12

Bild des Monats Mai - "Sonnenuntergang in Berlin"

Bild des Monats Mai - "Sonnenuntergang in Berlin"

Manchmal muss man einfach an einen bereits bekannten Spot zurückkehren, um ein völlig anderes Bild zu machen als bei einem vorherigen Besuch. Das Bild des Monats im Monat Mai ist vom gleichen Spot aus enstanden wie das Bild des Monas März, zeigt jedoch eine völlig andere Stimmung und gibt euch einen Einblick in diverse Techniken, die ich nutze, um meine Ergebnisse zu erzielen. In diesem Beitrag geht es um die Kombination zweier Aufnahmen, um eine möglichst gleichmäßige Belichtung zu erzielen, ohne dabei auf Techniken wie HDR zurückgreifen zu müssen.


Einführung

Als Landschaftsfotograf ist man inzwischen mehr oder weniger an die Nachbearbeitung gefesselt. Das meine ich überhaupt nicht negativ, im Gegenteil, es macht Spaß mit LR/PS noch das letzte aus den Bildern raus zu kitzeln. Auch wenn natürlich manche Dinge noch spontan im Workflow entstehen, sollte man die groben Schritte der Bearbeitung aber schon beim Aufnehmen des Bildes im Kopf haben. Hinterher irgendwie an den Reglnern schieben bis es passt kann zwar funktionieren, zeugt aber wenig von zielorientiertem Arbeiten. Gleichzeitig ist man als Fotograf aber immer abhängig vom Licht, d.h. man kann zwar zuhause den Spot planen, den Wetterbericht prüfen und die Ausrüstung entsprechend gestalten, aber wenn vor Ort das Licht nicht zu dem passt, was man sich vorgestellt hat, muss man flexibel sein oder es eben sein lassen.


Planung

Ich versuche in der Regel die Aufnahmen so gut es geht vorher zu planen. Gerade bei Sonnenuntergängen ist das aber äußerst schwierig, da kleinste Wolken darüber entscheiden können, ob der Himmel blutrot oder einfach graublau wird. In Berlin hat man im Frühling/Sommer leider oft das Problem, dass in Brandenburg Gewitter ist, während man in der Stadt blauen Himmel vorfindet. Als Resultat hängen am Horizont oft dicke Wolken, die in der Stadt den Sonnenuntergang ruinieren. :D Der Wetterbericht sah aber denkbar gut aus dieses mal, warm, trocken und kleinere Wölkchen am Himmel, perfekte Bedingungen für eine gelungene Aufnahme zum Sonnenuntergang. Mit TPE (hier ein Video von uns dazu) ermittelte ich den Stand der Sonne zum Zeitpunkt des Untergangs, der inzwischen deutlich weiter rechts (vom Spot aus gesehen) liegt, als noch vor 2 Monaten als dieses Bild entstanden ist (logisch, die Tage werden länger ;)).

  • tpe

Vor Ort

Mit 5DM3, 17-40 f4.0 L, Polfilter und 64x ND-Filter bewaffnet erreichte ich schließlich das Ziel und traf dort direkt auf Mitstreiter. Enttäuscht mussten wir leider feststellen, dass Brandenburg mal wieder zugeschlagen hatte und die gerade untergehende Sonne sich hinter einem schmalen Wolkenband befand. Aber wie hat ein gewisser Herr Jaworkskyj schon gesagt: Oft sind es die 15 Minuten NACH dem Sonnenuntergang, die entscheidend sind. Dies sollte sich auch hier bewahrheiten, nur dass es 15 Minuten gedauert hat, bis es überhaupt wieder brauchbares Licht gab. Die schon hinterm Horizont verschwundene Sonne färbte den Himmel samt Wolken wieder angenehm rot. Für die tiefer stehenden Wolken im Vordergrund reichte es nicht auf Grund des oben erwähnten Wolkenbandes.

Das Helligkeitsgefälle zwischen Himmel und Stadt war inzwischen deutlich größer geworden. Es ist nicht möglich gewesen mit einer einzelnen Belichtung den gesamten Dynamikumfang abzubilden. Natürlich wäre es möglich gewesen ein HDR vorzubereiten mit einer ganzen Belichtungsserie. Dies erschien mir aber auch wieder nicht sinnvoll, da erstens der Himmel gut aussah, wie er war, und zweitens lediglich die Stadt im Vordergrund etwas mehr Licht benötigte. Ich habe mich daher relativ spontan dafür entschieden nur 2 Aufnahmen zu machen, eine für den Himmel, eine für die Stadt und diese später durch simples Maskieren in Photoshop zu kombinieren. Der grobe Bearbeitungsplan stand zu diesem Zeitpunkt aber schon fest, so dass ichh meine Aufnahmen gezielt an meinen Plan anpassen konnte.


Die Rohaufnahmen

Die Ausrüstung viel entgegen aller Erwartungen auch sehr übersichtlich aus. Den ND-Filter habe ich aus mehreren Gründen direkt wieder eingepackt:

  1. Der rote Teil des Himmels war auf Grund der Wolkenlage ohnehin schon "schlierig" genug.
  2. Die kleinen dunklen Wolkenfetzen bieten mir in ihrer Struktur wesentlich mehr Dramatik, als graue Schleier, die nur das rot verdecken.

Auch der Polfilter blieb in der Tasche, denn:

  1. Das Licht traf fast frontal auf die Linse, die Auswirkungen des Polfilters sind dann überschaubar.
  2. Bei der Einstellung, wo er tatsächlich was am Himmel bewegt hätte, wären sämtliche Reflektionen auf dem Wasser weg gewesen. Diese sind mir aber sehr wichtig gewesen, da sie an dieser Stelle noch einmal angenehmes Licht ins Bild bringen und somit eine führende Linie zum Berliner Dom bilden.

Beide Aufnahmen sind im M-Modus entstanden. Die ISO habe ich auf 50 gestellt, Blende 8 für durchgehende Schärfe. Die Aufnahme für den Himmel ist mit 1s Verschlusszeit entstanden, die für die Stadt und die Straße mit 5s. Die perspektive erlaubte 17mm ohne große Verzerrungen, auch weil ich mich bemüht habe, den Fernsehturm nicht an den Bildrand zu quetschen, wo die Verzerrungen am größten sind.

  • 842A5828_orig
  • 842A5829_orig

 

Die Bearbeitung

Eine erste RAW-Entwicklung habe ich bereits in LR vollzogen. Insbesondere ist mir wichtig gleich am Anfang CAs zu korrigieren. Das 17-40 ist eine schöne Linse, aber man sieht oft deutliche Farbsäume und so ist auch hier der Fernsehturm nicht verschont geblieben. Später lassen sich die CAs sehr viel schlechter korrigieren, da sie durch zusätzliche Filter nicht mehr so eindeutig identifizierbar sind. Daher werden solche grundlegenden Dinge in meinem Workflow gleich am Anfang erledigt. Ansonsten wurde in der ersten Entwicklung lediglich der Kontrast optimiert über eine Kombination aus Tiefen/Lichter und Schwarz/Weiß Reglern, wie ich sie auch in diesem Video beschreibe.

{twenty}image1=2017/2017_05_29_BDM_Mai/01_orig/842A5828_orig.jpg|image2=2017/2017_05_29_BDM_Mai/02_raw1/842A5828.jpg{twenty} {twenty}image1=2017/2017_05_29_BDM_Mai/01_orig/842A5829_orig.jpg|image2=2017/2017_05_29_BDM_Mai/02_raw1/842A5829.jpg{twenty}


Maskierung

Alle weiteren Schritte erfolgten dann in Photoshop. Das schwierigste war es eine gute Auswahl zu erzeugen, auf deren Basis dann die Layermaske entstehen konnte, um die korrekt belichtete Stadt in den korrekt belichteten Himmel zu blenden. Ich habe dabei auf die Kanäle zurückgegriffen und auf Basis des Blau-Kanals und Tonwertkorrekturen die grundlegende Auswahl gebaut, die durch etwas Verkleinern und mit weichem Rand perfektioniert wurde. Angewendet auf den Stadt-Layer ergab sich ein bereits ansehnliches Ergebnis.

  • blaukanal
  • maskiert
  • maskierung

 

NIK ColorEfex

Für etwas mehr Wärme und noch ein wenig Kontrast nutzte ich dann die Nik Color Efex, speziell Warmth/Brilliance und den Detail Extractor. Ich habe mir grundsätzlich angewöhnt den dadurch entstehenden Layer sofort auf 50% Deckkraft zu stellen, um damit den Effekt zu halbieren. Anschließend verlasse ich für mindestens 10 Minuten den Bildschirm und nur wenn ich beim Zurückkehren denke, dass es zu wenig ist, stelle ich die Deckkraft höher. Das verhindert bei mir sehr gut, dass ich es mit den Effekten übertreibe.
{twenty}image1=2017/2017_05_29_BDM_Mai/03_maske/maskiert.jpg|image2=2017/2017_05_29_BDM_Mai/04_nik/842A5829_nik.jpg{twenty}

 

Farbgebung durch Verlaufsumsetzung

Für etwas mehr Lila am rechten Bildrand, der ja sowieso etwas dunkler ausfällt, nutze ich eine Verlaufsumsetzung, die mit einer Layermaske und Gradienten wirklich nur in der Ecke rechts unten angewendet wird. Der Effekt bewirkt, dass die Farbgebung auf der Straße und den hellen Gebäuden deutlich weniger grün wird, was mehr dem Gesamteindruck des Bildes entspricht.
{twenty}image1=2017/2017_05_29_BDM_Mai/04_nik/842A5829_nik.jpg|image2=2017/2017_05_29_BDM_Mai/05_verlauf/842A5829_verlauf.jpg{twenty}

 

Schärfen

Danach erfolgte eine Schärfung per Hochpassfilter. Zum Schärfen gibt es ja sehr eigene Philosophien, ich persönlich finde die Hochpassschärfung nach wie vor absolut brilliant, da sie quasi den "Maskieren"-Regler aus Lightroom automatisch beinhaltet. Wichtig auch hier wieder: Mit Bedacht vorgehen, nicht überschärfen!
{twenty}image1=2017/2017_05_29_BDM_Mai/05_verlauf/842A5829_verlauf.jpg|image2=2017/2017_05_29_BDM_Mai/06_scharf/842A5829_scharf.jpg{twenty}

 

Letzter Schliff

Den Abschluss bildete eine weitere RAW-Entwicklung, bei der aber lediglich Teile im Bild per Korrekturpinsel mehr betont wurden. Dies erfolgte mit einem weichen Pinsel, für den die Belichtung um eine halbe Blendenstufe erhöht wurde.
{twenty}image1=2017/2017_05_29_BDM_Mai/06_scharf/842A5829_scharf.jpg|image2=2017/2017_05_29_BDM_Mai/07_raw2/842A5829_licht.jpg{twenty}

 

Abschluss

Wer unseren Blog regelmäßig liest, dem ist vermutlich aufgefallen, dass das Bild des Monats März aus identischer Perspektive gemacht wurde. Damals lag der Fokus aber wesentlich mehr auf fotografischen Effekten, während es dieses mal hauptsächlich um Techniken der Nachbearbeitung ging. Für kommende Beiträge aus dieser Serie werde ich aber wieder auf andere Locations zurückgreifen :)

  • 842A5829_final

Dir gefällt was du siehst? Dann zwitschere uns weiter oder like uns auf Facebook

57126 Kommentare

  • Kommentar-Link Davidgal Freitag, 11 April 2025 22:43 gepostet von Davidgal

    By Henry Austin
    A Russian-American woman who was imprisoned for treason by Russia has been freed, Secretary of State Marco Rubio said Thursday.
    mega2oakke6o6mya3lte64b4d3mrq2ohz6waamfmszcfjhayszqhchqd.onion
    Former ballerina Ksenia Karelina was born in Russia but had built a new life as an aesthetician at a Los Angeles spa after immigrating to the United States over a decade ago. She “is on a plane back home to the United States,” having been “wrongfully detained by Russia for over a year,” Rubio said on in a post on X. He credited President Donald Trump with securing her release.
    mega2onq5nskz5ib5cg3a2aqkcprqnm3lojxtik2zeou6au6mno7d4ad
    Karolina’s lawyer, Mikhail Mushailov, confirmed her release in a statement on Instagram. “Two hours ago she was in touch with her relatives and took off from Abu Dhabi to the U.S.,” he wrote, adding that he had known about her release since Tuesday.
    mega2olipdgn3zpmm6fjcl2jfeweyy7gjuzrs3mja7nkchflkdu7lfyd
    Russia’s Federal Security Service (FSB) detained Karelina in January 2024 while she was visiting her parents and young sister in the city Yekaterinburg. It did not provide further details or evidence of her alleged crime.
    mega2onq5nskz5ib5cg3a2aqkcprqnm3lojxtik2zeou6au6mno7d4ad.onion
    At the time, Russian legal group Perviy Otdel said it had information that Karelina had donated just over $51.80 from her U.S. bank account on Feb. 24, 2022 — the day that Russia launched its full-scale invasion of Ukraine — to a charity that sends aid to Ukraine. A spa where she had previously worked confirmed this in a statement on Facebook.

    Although Russia’s FSB did not confirm that figure, it said Karelina’s donation “was subsequently used to purchase tactical medical supplies, equipment, weapons, and ammunition for the Ukrainian armed forces.”

    She was sentenced in August to 12 years in a penal colony for “high treason,” having “fully admitted her guilt” at a closed trial in the southwestern Russian city of Yekaterinberg, Sverdlovsky Region Court said in a news release at the time.

    The sentence came against the backdrop of Russia’s 3-year-long war with Ukraine during which President Vladimir Putin’s government has cracked down on dissent. Any perceived criticism of the military is banned.

    Recommended
    mega2ooyov5nrf42ld7gnbsurg2rgmxn2xkxj5datwzv3qy5pk3p57qd

    https://mega2olipdgn3zpmm6fjcl2jfeweyy7gjuzrs3mja7nkchflkdu7lfyd.com

  • Kommentar-Link MichaelMus Freitag, 11 April 2025 22:05 gepostet von MichaelMus

    How Trump changed his mind on tariffs

    +2
    Peter Nicholas, Garrett Haake and Carol E. Lee
    Reporting from Washington
    mgmarket
    “Liberation Day” gave way to Capitulation Day last night.

    President Donald Trump pulled back yesterday on a series of harsh tariffs targeting friends and foes alike in an audacious bid to remake the global economic order.

    Image: President Donald Trump
    Saul Loeb / AFP - Getty Images
    Trump’s early afternoon announcement followed a harrowing week in which Republican lawmakers and confidants privately warned him that the tariffs could wreck the economy. His own aides had quietly raised alarms about the financial markets before he suspended a tariff regime that he had unveiled with a flourish just one week earlier in a Rose Garden ceremony.
    mgmarket9.at
    The stock market rose immediately after the about-face, ending days of losses that have forced older Americans who’ve been sinking their savings into 401(k)s to rethink their retirement plans.

    Read the full story here.

    32m ago / 12:55 PM GMT+3
    Sharesocial share icon trigger
    China's foreign ministry calls the U.S. a '21st century barbarian'

    Peter Guo

    Reporting from Hong Kong

    China's public language on its trade war with the U.S. has become increasingly bellicose and took a new turn today when Beijing's foreign ministry said the Trump administration's tariffs have made the U.S. a “barbarian of the 21st century.”

    Trump’s tariffs will “never America great again” ministry of foreign affairs spokesperson Huang Jingrui, wrote in an open letter today in Hong Kong’s newspaper South China Morning Post.
    mgmarket8 at
    “A tariff-wielding barbarian who attempts to force countries to call and beg for mercy can never expect that call from China,” Huang said, adding that the U.S. is “obsessed with the art of bullying and blackmailing the entire world.”

    47m ago / 12:40 PM GMT+3
    Sharesocial share icon trigger
    EU welcomes 90-day tariff pause

    Peter Guo

    The EU President Ursula von der Leyen said today that the region welcomes Trump’s announcement to pause tariffs for 90 days.

    Von der Leyen said the EU remains “committed to constructive negotiations” with the U.S., according to a statement from her office.

    Meanwhile, Europe continues to focus on diversifying their trade partnerships, engaging with countries that account for 87% of global trade, she said.

    Trump’s tariffs have shown that the European internal market is the region’s “anchor of stability and resilience” in times of uncertainty, von der Leyen added.

    1h ago / 12:27 PM GMT+3
    Sharesocial share icon trigger
    Trade war with China 'to spark a wave of smuggling'

    Peter Guo

    Reporting from Hong Kong
    mgmarket6.at
    Irregular trade including smuggling will most likely rise amid the U.S.' and China's tit-for-tat tariffs, an economist warns.

    The cost of tariffs has become “prohibitive to almost every company,” Tianchen Xu, senior economist at Economist Intelligence Unit.

    “As a result, trade flows in both directions will tumble, and irregular trade will proliferate, including smuggling, transshipment and systemic under-reporting of trade value during customs clearance,” Xu said in a note.

    Xu said trade negotiations and a partial de-escalation in the ongoing trade war may ensue in the coming months, but those tensions are likely to worsen in the short term between the world’s two largest economies.

    1h ago / 12:09 PM GMT+3
    Sharesocial share icon trigger
    California plant business owner says costs will double with tariffs

    Gadi Schwartz and Phil Helsel
    The owner of a California home decor and plant shop said that even in dealing locally, the sourcing of goods from China is impossible to avoid.
    mgmarket7 at

    https://mgmarket4at.su

  • Kommentar-Link 888starzgorobr Freitag, 11 April 2025 13:54 gepostet von 888starzgorobr

    888 starz отзывы https://gorobr.ru/images/pages/?preimushestva-online-casino.html

  • Kommentar-Link CharlesVed Freitag, 11 April 2025 13:32 gepostet von CharlesVed

    Why axolotls seem to be everywhere — except in the one lake they call home
    кракен даркнет
    Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his research subjects: aquatic salamanders called axolotls.

    The amphibians’ fans tell Voss that they know the animals from the internet, or from caricatures or stuffed animals, exclaiming, “‘They’re so adorable, we love them,’” said Voss, a professor of neuroscience at the University of Kentucky College of Medicine. “People are drawn to them.”
    https://kra30s.cc
    кракен онион

    Take one look at an axolotl, and it’s easy to see why it’s so popular. With their wide eyes, upturned mouths and pastel pink coloring, axolotls look cheerful and vaguely Muppet-like.

    They’ve skyrocketed in pop culture fame, in part thanks to the addition of axolotls to the video game Minecraft in 2021. These unusual salamanders are now found everywhere from Girl Scout patches to hot water bottles. But there’s more to axolotls than meets the eye: Their story is one of scientific discovery, exploitation of the natural world, and the work to rebuild humans’ connection with nature.

    A scientific mystery
    Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. The animals are named for the Aztec god Xolotl, who was said to transform into a salamander. The original Nahuatl pronunciation is “AH-show-LOAT”; in English, “ACK-suh-LAHT-uhl” is commonly used.
    Axolotls are members of a class of animals called amphibians, which also includes frogs. Amphibians lay their jelly-like eggs in water, and the eggs hatch into water-dwelling larval states. (In frogs, these larvae are called tadpoles.)

    Most amphibians, once they reach adulthood, are able to move to land. Since they breathe, in part, by absorbing oxygen through their moist skin, they tend to stay near water.

    Axolotls, however, never complete the metamorphosis to a land-dwelling adult form and spend their whole lives in the water.

    “They maintain their juvenile look throughout the course of their life,” Voss said. “They’re teenagers, at least in appearance, until they die.”

  • Kommentar-Link DonaldRor Freitag, 11 April 2025 13:25 gepostet von DonaldRor

    Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
    lucky jet играть
    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
    https://lucky-jetts.com
    lucky jet
    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

  • Kommentar-Link VincentDueta Freitag, 11 April 2025 13:01 gepostet von VincentDueta

    A job for the Webb space telescope
    kraken тор
    “We got 53 candidates for anomalies that cannot be well explained, but can’t say that all of them are Dyson sphere candidates, because that’s not what we are specifically looking for,” said Gabriella Contardo, a postdoctoral research fellow at the International School for Advanced Studies in Trieste, Italy, who led the earlier study. She added that she plans to check the candidates against Suazo’s model to see how many tie into it.
    https://kra30att.cc
    kra at
    “You need to eliminate all other hypotheses and explanations before saying that they could be a Dyson sphere,” she added. “To do so you need to also rule out that it’s not some kind of debris disk, or some kind of planetary collision, and that also pushes the science forward in other fields of astronomy — so it’s a win-win.”

    Both Contardo and Suazo agree that more research is needed on the data, and that ultimately they could turn to NASA’s James Webb Space Telescope for more information, as it is powerful enough to observe the candidate stars directly. However, because of the lengthy, competitive procedures that regulate use of the telescope, securing access might take some time.
    If Dyson spheres really exist, what could they be used for? “If you picture ourselves having as much energy as the sun is providing every second, we could do unheard of things,” Suazo said. “We could do interstellar travel, maybe we could even move the entire solar system to our preferred location, if we wanted.”

    But don’t hold your breath, because the technology and the raw materials required to build the hypothetical structures are far beyond humanity’s grasp.

    “They are so big that everything we have on Earth would not be enough to build them,” Suazo added. “Freeman Dyson said that we should dismantle Jupiter — the whole planet (for the raw materials).”

    That supercolossal scale probably means that Dyson spheres, if they exist at all, are very rare.

  • Kommentar-Link FrankVox Freitag, 11 April 2025 12:26 gepostet von FrankVox

    ‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
    Кракен тор
    What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

    “One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept
    https://kra30c.cc
    kra cc
    If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
    Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

    In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

    “Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

  • Kommentar-Link Josephmep Freitag, 11 April 2025 12:14 gepostet von Josephmep

    Broken spheres
    Dyson died in 2020 before any of his spheres could be found — although they are just one of a dozen ideas that bear his name.
    kra31at
    “As a young scientist, Dyson showed that three competing quantum theories were actually the same theory — he summarily ended the competition,” said William Press, the Leslie Surginer Professor of Computer Science and Integrative Biology at the University of Texas at Austin. He was not involved in the study. “Later, he applied his genius to areas of astronomy, cosmology, the extraterrestrial realm, and also the very real problem of nuclear proliferation here on planet Earth. At the time of his death, he was recognized as a provocative and creative thinker.”

    George Dyson also attested to his father’s fascination and comprehensive reach across disciplines.
    https://kra30att.cc
    kra at
    “Taking advantage of a short attention span and an aversion to bureaucracy, he contributed to five fields of mathematics and eleven fields of physics, as well as to theoretical biology, engineering, operations research, literature, and public affairs,” the younger Dyson said. “Many of his ideas were controversial, with one of his guiding principles being that ‘It is better to be wrong than to be vague.’”

    The approach of the researchers behind the new study could offer a more fruitful path in the search for extraterrestrial intelligence, said Tomotsugu Goto, an associate professor of astronomy at the National Tsing Hua University in Taiwan. He also was not involved with the study.

    “However, contamination by circumstellar debris disks, which mimic Dyson Sphere infrared signatures, remains a concern,” he added in an email. “Authors argue that the debris disks around (dwarf stars) are rare, but the 7 candidate authors selected out of 5 million sources are also rare. Despite this, the seven candidates warrant further investigation with powerful telescopes for a more definitive evaluation.”

  • Kommentar-Link MartinGab Freitag, 11 April 2025 12:07 gepostet von MartinGab

    A job for the Webb space telescope
    kra at
    “We got 53 candidates for anomalies that cannot be well explained, but can’t say that all of them are Dyson sphere candidates, because that’s not what we are specifically looking for,” said Gabriella Contardo, a postdoctoral research fellow at the International School for Advanced Studies in Trieste, Italy, who led the earlier study. She added that she plans to check the candidates against Suazo’s model to see how many tie into it.
    https://kra30att.cc
    кракен ссылка
    “You need to eliminate all other hypotheses and explanations before saying that they could be a Dyson sphere,” she added. “To do so you need to also rule out that it’s not some kind of debris disk, or some kind of planetary collision, and that also pushes the science forward in other fields of astronomy — so it’s a win-win.”

    Both Contardo and Suazo agree that more research is needed on the data, and that ultimately they could turn to NASA’s James Webb Space Telescope for more information, as it is powerful enough to observe the candidate stars directly. However, because of the lengthy, competitive procedures that regulate use of the telescope, securing access might take some time.
    If Dyson spheres really exist, what could they be used for? “If you picture ourselves having as much energy as the sun is providing every second, we could do unheard of things,” Suazo said. “We could do interstellar travel, maybe we could even move the entire solar system to our preferred location, if we wanted.”

    But don’t hold your breath, because the technology and the raw materials required to build the hypothetical structures are far beyond humanity’s grasp.

    “They are so big that everything we have on Earth would not be enough to build them,” Suazo added. “Freeman Dyson said that we should dismantle Jupiter — the whole planet (for the raw materials).”

    That supercolossal scale probably means that Dyson spheres, if they exist at all, are very rare.

  • Kommentar-Link LarryHoarf Freitag, 11 April 2025 11:35 gepostet von LarryHoarf

    ‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
    kraken тор
    What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

    “One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept
    https://kra30c.cc
    kraken войти
    If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
    Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

    In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

    “Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

Schreibe einen Kommentar

Make sure you enter all the required information, indicated by an asterisk (*). HTML code is not allowed.

Diese Website verwendet Cookies – nähere Informationen dazu und zu Ihren Rechten als Benutzer finden Sie in unserer Datenschutzerklärung im Impressum der Seite. Mit einem Klick auf OK stimmen Sie der Verwendung von Cookies zu.