Hubble's Hidden Treasures — Image Processing
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Muchas, muchas gracias por sus visitas, favs y comentarios :)
Many, many thanks for your visits, favs and comments :)
Olympus & 60 mm macro.
A beautiful galactic dance 211 million light years away. Captured by Hubble WFC3 and processed by me.
La galaxie spirale NGC 634 (Hubble) est située à 217 millions d'années-lumière de la Terre dans la constellation du Triangle (Triangulum). La finesse des détails et la structure spirale exceptionnellement parfaite de la galaxie en ont fait une cible d'observation privilégiée suite à la disparition violente d'une naine blanche. La supernova de type Ia SN2008a y avait ainsi été repérée et brièvement rivalisé d'éclat avec la galaxie hôte.
Les naines blanches constituent le point final de l'évolution des étoiles dont la masse se situe entre 0,07 et 8 masses solaires, soit 97 % des étoiles de la Voie lactée. Avec toutefois des exceptions, dans un système binaire une naine blanche peut accréter la matière provenant de son étoile compagnon et prendre progressivement du poids. Mais l'étoile peut finir par devenir trop pleine, lorsqu'elle dépasse 1,38 masse solaire. Des réactions nucléaires se déclenchent en produisant d'énormes quantités d'énergie et l'étoile explose en supernova de type Ia.
Cette image a été créée à partir d'images prises avec le canal grand champ de la caméra avancée de Hubble. Ces images ont été obtenues à travers un filtre jaune (F555W, coloré en bleu), combinées avec celles images obtenues à travers des filtres rouge (F625W, coloré en vert) et proche infrarouge (F775W, coloré en rouge). Les temps d'exposition totaux par filtre étaient respectivement de 3 750 s, 3 530 s et 2 484 s, et le champ de vision de 2,5 x 1,5 minute d'arc, soir 0,062° (cf. ESA/Hubble et NASA).
Pour situer la galaxie spirale NGC 634 (Hubble) dans la constellation du Triangle (Triangulum) :
A macro of a glass of coffee, for Macro Monday, on the theme of beverage.
This was my second try at it, as the first try gave me some very lukewarm image. Also had to take a photo, then leave it for a few seconds, then go back, as the lense kept fogging up!
I was originally going to leave this as colour, but popped it into silver efex after color efex, just to see and I really liked it.
Nikon Z6, 18mm Extension Tube, FTZ, Tamron 90mm Macro Lense, Ring FLash,
Exposure X5, Color Efex Pro 4, Silver Efex Pro 2
For today’s Macro Mondays challenge (outer space) I present Nancy G. Roman in LEGO. She is one of several space related LEGO people in our little collection.
… no not the space telescope, the (T)Oil and Trouble one.
Another quick on for Sliders Sunday. I am working on a couple of sets as project, but neither is near enough to completion to share, and time is limited for me just now.
Never one to throw away images (though I am trying to learn how) I have repurposed one of my oil droplet images from Smile on Saturday’s project yesterday. The starting image had lots of detail and texture and a little bit of colour variation from using two oils (see the comment from yesterday for more if you wish).
The work was done mainly in Affinity though I did us a bit of Nik Color Efex to tweak it a bit at the end.
The basic approach takes an oft-travelled path for me. Duplicate the image layer, flip it horizontally and vertically to give the overall result some symmetry and blend the two layers together with Difference blend mode (or any other mode that works for you) which injects lots of colours. The rest is just tweaking the colours.
I’ll post a link to the in-camera image so you can see the rather bland (in comparison) starting point.
Thanks for taking the time to look. I hope you enjoy the image. Happy Sliders Sunday :)
L'amas globulaire NGC 6101 (Hubble), également connu sous le nom de Caldwell 107, est situé à 36 000 (47 700 ?) années-lumière de la Terre dans la constellation de l'Oiseau de paradis (Apus). Son âge est d'environ 11,39 milliards d'années. C'est un amas globulaire atypique, car il a l'apparence d'être jeune : ses étoiles ne paraissent pas avoir subi de ségrégation, étant uniformément réparties dans l'amas, maisil est réellement vieux, avec un âge de l'ordre de celui de notre galaxie : 13 milliards d'annéesavec un cœur apparemment sous-peuplé en étoiles.
Pour comprendre cette anomalie, l'équipe de l'Université de Surrey a donc eu l'idée de recréer numériquement l'amas globulaire et son évolution dynamique depuis sa naissance. Ils ont ainsi produit des simulations numériques à N corps en introduisant chaque étoile individuelle, ainsi qu'une population de trous noirs, en prenant en compte leur comportements respectifs sur une durée équivalente à 13 milliards d'années.
En augmentant progressivement le nombre de trous noirs stellaires dans NGC 6101, Miklos Peuten et ses collaborateurs parviennent finalement à retrouver exactement le profil de l'amas aujourd'hui.
L'anomalie de la dynamique des étoiles dans NGC 6101 peut donc être un produit de la présence de plusieurs centaines de trous noirs stellaires, objets de quelques masses solaires qui se forment par l'effondrement gravitationnel d'étoiles massives lors de supernovas. Comme on pensait auparavant que ce type de trous noirs devaient être facilement éjectés de l'amas globulaire lors de l'explosion. Si le résultat de Peuten et ses collègues est confirmé par des observations, la formation des trous noirs dans les amas pourrait être à revoir. Ce n'est qu'en 2012 et 2013 en effet que les chercheurs ont trouvé par l'observation des trous noirs dans des amas globulaires (par exemple M22 et M63), par l'émission X accompagnant leur accrétion de matière.
Des études antérieures avaient montré que si l'impulsion initiale de la supernova n'était pas suffisante pour éjecter le trou noir d'un amas à sa création, une fraction importante de trous noirs pourraient y être retenus durant 12 milliards d'années, ce qui semble être le cas dans les amas ayant une grande dimension initiale. NGC 6101 a aussi une autre particularité, qui est que son orbite galactique est rétrograde, indiquant une probable origine extragalactique. Il a même été suggéré en 2004 que NGC 6101 pourrait provenir de la galaxie naine Canis Major et aurait été "attrapé" par la Voie lactée.
Un des indices pour étayer cette hypothèse est que le cœur de grande dimension de cet amas ressemble beaucoup à ce qui est observé dans les amas globulaires de galaxies naines, mais moins dans ceux de la Voie Lactée. D'où la question : pourquoi les amas globulaires des galaxies naines posséderaient-ils plus de trous noirs que ceux des grandes galaxies ? Le taux de production de trous noirs serait la même, mais c'est la densité plus faible des amas globulaires formés dans les galaxies naines qui induirait une plus grande rétention des trous noirs dans ces amas.
La présence de nombreux trous noirs dans le centre de certains amas globulaires pourrait indiquer que c'est avant tout dans ces régions qu'il faut chercher des sources d'ondes gravitationnelles, quand ils se mettent à fusionner... Il faut donc maintenant trouver leur trace par l'observation, mais c'est un peu plus difficile que de faire tourner un code de calcul sur un superordinateur (cf. Source : A stellar-mass black hole population in the globular cluster NGC 6101, M. Peuten et al).
Pour situer l'amas globulaire NGC 6101 (Hubble) dans la constellation de l'Oiseau de paradis (Apus) :
The Hubble Space telescope's observations of the universe have seldom produced more intriguing images than that seen in this section of bubble glass in the window of a public house.
NASA’s Hubble Space Telescope has unveiled in stunning detail a small section of the expanding remains of a massive star that exploded about 8,000 years ago.
Called the Veil Nebula, the debris is one of the best-known supernova remnants, deriving its name from its delicate, draped filamentary structures. The entire nebula is 110 light-years across, covering six full moons on the sky as seen from Earth, and resides about 2,100 light-years away in the constellation Cygnus, the Swan.
This 3-D visualization flies across a small portion of the Veil Nebula as photographed by the Hubble Space Telescope.
Read more: www.nasa.gov/feature/goddard/hubble-zooms-in-on-shrapnel-...
Credit: NASA, ESA, and F. Summers, G. Bacon, Z. Levay, and L. Frattare (Viz 3D Team, STScI)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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We are back from Portugal, a little jet-lagged (always milder going east to west than vice-versa) and none the worse for the wear. Time to upload the 1,136 images that I took. Here's a garden abstract from the archives while I get to it. :)
- Rosa's Garden of Earthly Delights, Keefer Lake, Ontario, Canada -
M33, the Triangulum Galaxys one of the closest large galaxies to Earth. It’s located in the constellation Triangulum at a distance of about 2.5 million light years and has a diameter of around 60,000 light years. My first RGB image, taken in a Bortle 4 area; Borrego Springs, California, while attending a star party there about a week ago.
OTA: Esprit 120mm 840 focal length f 7.0
Camera: QHY268M
Gain: 56
Filters: Optolong LRGB,
Cooling Temperature: --15 Celsius
Mount: SkyWatcher EQ6-R with QHY Polemaster alignment
Autofocus: Sesto Senso 2
Guide scope: Orion 60mm focal length 240mm f/4
Auto-guiding: ZWO ASI290MM Mini
Control: Primaluce Eagle 4S
Calibrated PixInsight
Processed in Pixinsight and Lightroom
Borrego Springs - Bortle 4 skies
R 48 x 5min
G 39 x 5min
B 43 x 5min
L 55 x 5min
Ha 4 hrs
about 19 hour integration
This jewel-bright image from the NASA/ESA Hubble Space Telescope shows NGC 1385, a spiral galaxy 68 million light-years from Earth, which lies in the constellation Fornax.
NGC 1385’s home – the Fornax constellation – is not named after an animal or an ancient god, as are many of the other constellations. Fornax is simply the Latin word for a furnace.
The constellation was named Fornax by Nicolas-Louis de Lacaille, a French astronomer born in 1713. Lacaille named 14 of the 88 constellations we still recognize today. He seems to have had a penchant for naming constellations after scientific instruments, including Atlia (the air pump), Norma (the ruler, or set square), and Telescopium (the telescope).
Credit: ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team
A 130 millions d'a.l., les bras gracieux et sinueux de la majestueuse galaxie spirale NGC 3147, d'un diamètre de 83 000 a.l., apparaissent comme un grand escalier en spirale balayant l’espace dans cette image du télescope spatial Hubble. Ce sont en fait de longues bandes de jeunes étoiles bleues, de nébuleuses roses et de poussière. La beauté de la galaxie dément le fait qu’en son centre même se trouve un trou noir mal nourri, entouré d’un disque mince et compact d’étoiles, de gaz et de poussière qui ont été pris dans un maelstrom gravitationnel. La gravité du trou noir est si intense que tout ce qui s’aventure près de lui est balayé dans le disque. Ce dernier est si profondément ancré dans le champ gravitationnel intense du trou noir que la lumière du disque de gaz est modifiée, selon les théories de relativité d’Einstein, donnant aux astronomes un aperçu unique des processus dynamiques proches (cf. hubblesite.org).
Pour mieux situer l'astre dans sa constellation :
www.flickr.com/photos/7208148@N02/48686608841/in/datepost...
After seeing yesterday's APOD, a Hubble Legacy Archive image processed by Hunter Wilson; (apod.nasa.gov/apod/ap160309.html) I really enjoyed the presentation, but there were a few things that I didn't like about the way the image was processed. So naturally I decided to have a go at it myself and downloaded the data from the website last night (hla.stsci.edu/) and started tinkering with it this morning. I finished it to an initial satisfactory processing and was quite pleased at the results!
Clustered at the center of this image are six brilliant spots of light, four of them creating a circle around a central pair. Appearances can be deceiving, however, as this formation is not composed of six individual galaxies, but is actually two separate galaxies and one distant quasar imaged four times. Data from the NASA/ESA Hubble Space Telescope also indicates that there is a seventh spot of light in the very center, which is a rare fifth image of the distant quasar. This rare phenomenon is the result of the two central galaxies, which are in the foreground, acting as a lens.
The four bright points around the galaxy pair, and the fainter one in the very center, are in fact five separate images of a single quasar (known as 2M1310-1714), an extremely luminous but distant object. The reason we see this quintuple effect is a phenomenon called gravitational lensing. Gravitational lensing occurs when a celestial object with an enormous amount of mass – such as a pair of galaxies – causes the fabric of space to warp. When light from a distant object travels through that gravitationally warped space, it is magnified and bent around the huge mass. This allows humans here on Earth to observe multiple, magnified images of the far-away source. The quasar in this image actually lies farther away from Earth than the pair of galaxies. The galaxy pair’s enormous mass bent and magnified the light from the distant quasar, giving the incredible appearance that the galaxies are surrounded by four quasars – when in reality, a single quasar lies far beyond them!
Hubble’s Wide Field Camera 3 (WFC3) imaged the trio in spectacular detail. It was installed on Hubble in 2009 during Hubble Servicing Mission 4, Hubble’s final servicing mission. WFC3 continues to provide both top-quality data and fantastic images 12 years after its installation.
Image credit: ESA/Hubble & NASA, T. Treu; Acknowledgment: J. Schmidt
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Spanning from 2003 to 2021, this collection of images from the NASA/ESA Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. These two celestial phenomena are both crucial tools used by astronomers to determine astronomical distance, and have been used to refine our measurement of Hubble’s constant, the expansion rate of the Universe.
Credits: NASA, ESA CC BY 4.0
Spotted in Explore by DMC43. Thanks Donna! #228 23/11/08
Pretty chilly here today so back to indoor flowers for the moment!
This image from the NASA/ESA Hubble Space Telescope shows two of the galaxies in the galactic triplet Arp 248 — also known as Wild's Triplet — which lies around 200 million light-years from Earth in the constellation Virgo. The two large spiral galaxies visible in this image — which flank a smaller, unrelated background spiral galaxy — seem to be connected by a luminous bridge. This elongated stream of stars and interstellar dust is known as a tidal tail, and it was formed by the mutual gravitational attraction of the two foreground galaxies.
This observation comes from a project which delves into two rogues’ galleries of weird and wonderful galaxies: A Catalogue Of Southern Peculiar Galaxies And Associations, compiled by astronomers Halton Arp and Barry Madore, and the Atlas of Peculiar Galaxies, compiled by Halton Arp. Each collection contains a menagerie of spectacularly peculiar galaxies, including interacting galaxies such as Arp 248, as well as one- or three-armed spiral galaxies, galaxies with shell-like structures, and a variety of other space oddities.
Hubble used its Advanced Camera for Surveys to scour this menagerie of eccentric galaxies in search of promising candidates for future observations with the NASA/ESA/CSA James Webb Space Telescope, the Atacama Large Millimeter/submillimeter Array, and Hubble itself. With such a wealth of astronomical objects to study in the night sky, projects such as this, which guide future observations, are a valuable investment of observing time. As well as the scientific merits of observing these weird and wonderful galaxies, they were also — very unusually — selected as Hubble targets because of their visual appeal to the general public!
Credit: ESA/Hubble & NASA, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, J. Dalcanton; CC BY 4.0
[Image description: Two spiral galaxies are viewed almost face-on; they are a mix of pale blue and yellow in colour, crossed by strands of dark red dust. They lie in the upper-left and lower-right corners. A long, faint streak of pale blue joins them, extending from an arm of one galaxy and crossing the field diagonally. A small spiral galaxy, orange in colour, is visible edge-on, left of the lower galaxy.]
This NASA Hubble Space Telescope image captures one of three segments that comprise a 65-light-year wide star-forming region named the Chamaeleon Cloud Complex. The segment in this Hubble composite image, called Chamaeleon Cloud I (Cha I), reveals dusty-dark clouds where stars are forming, dazzling reflection nebulae glowing by the light of bright-blue young stars, and radiant knots called Herbig-Haro objects.
Herbig-Haro objects are bright clumps and arcs of interstellar gas shocked and energized by jets expelled from infant “protostars” in the process of forming. The white-orange cloud at the bottom of the image hosts one of these protostars at its center. Its brilliant white jets of hot gas are ejected in narrow torrents from the protostar’s poles, creating the Herbig-Haro object HH 909A.
Image Credit: NASA, ESA, K. Luhman and T. Esplin (Pennsylvania State University), et al., and ESO; Processing: Gladys Kober (NASA/Catholic University of America)
#NASA #NASAMarshall #Hubble #HST
A black hole forms in a giant cumulus cloud where nothing can escape, well not actually nothing but it’s toil and trouble for somebody, that ship on the horizon for instance.
The jellyfish galaxy JO206 trails across this image from the NASA/ESA Hubble Space Telescope, showcasing a colorful star-forming disk surrounded by a pale, luminous cloud of dust. A handful of foreground bright stars with crisscross diffraction spikes stands out against an inky black backdrop at the bottom of the image. JO206 lies over 700 million light-years from Earth in the constellation Aquarius.
Jellyfish galaxies are so-called because of their resemblance to their aquatic namesakes. In the bottom right of this image, long tendrils of bright star formation trail the disk of JO206, just as jellyfish trail tentacles behind them. The tendrils of jellyfish galaxies are formed by the interaction between galaxies and the intra-cluster medium, a tenuous superheated plasma that pervades galaxy clusters. As galaxies move through galaxy clusters, they ram into the intracluster medium, which strips gas from the galaxies and draws it into the long tendrils of star formation.
The tentacles of jellyfish galaxies give astronomers a unique opportunity to study star formation under extreme conditions, far from the influence of the galaxy’s main disk. Surprisingly, Hubble revealed that there are no striking differences between star formation in the disks of jellyfish galaxies and star formation in their tentacles, which suggests the environment of newly formed stars has only a minor influence on their formation.
Image Credit: ESA/Hubble & NASA, M. Gullieuszik and the GASP team
#NASA #NASAMarshall #NASAGoddard #ESA #HubbleSpaceTelescope #HST #astrophysics #galaxy
This image shows the globular cluster NGC 6380, which lies around 35,000 light-years from Earth, in the constellation Scorpio (the Scorpion). Globular clusters are spherical groups of stars held together by gravity; they often contain some of the oldest stars in their galaxies. The very bright star at the top of the image is HD 159073, which is only around 4,000 light-years from Earth, making it a much nearer neighbor than NGC 6380. This image was taken with Hubble’s Wide Field Camera 3, which, as its name suggests, has a wide field of view, meaning that it can image relatively large areas of the sky in enormous detail.
NGC 6380 is not a particularly exciting name, but it indicates that this cluster is catalogued in the New General Catalogue, which was originally compiled in 1888. This cluster has, however, been known by many other names. It was originally discovered by James Dunlop in 1826, and he rather immodestly named it Dun 538. Eight years later, in 1834, it was independently rediscovered by John Herschel and he (similarly immodestly) went on to name it H 3688. The cluster was re-rediscovered in 1959 by Paris Pişmiş, who catalogued it as Tonantzintla 1 – and who, to continue the pattern, also referred to it as Pişmiş 25. In addition to its colorful history of rediscovery, up until the 1950s NGC 6380 was thought to be an open cluster. It was A. D. Thackeray who realized that it was in fact a globular cluster. Nowadays, this cluster is reliably recognized in widely available catalogues as a globular cluster, and referred to simply as NGC 6380.
Text credit: European Space Agency
Image credit: ESA/Hubble & NASA, E. Noyola
NASA image use policy.
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Astronomers using NASA’s Hubble Space Telescope have discovered an immense cloud of hydrogen dubbed “The Behemoth” bleeding from a planet orbiting a nearby star. The enormous, comet-like feature is about 50 times the size of the parent star. The hydrogen is evaporating from a warm, Neptune-sized planet, due to extreme radiation from the star.
This phenomenon has never been seen around an exoplanet so small. It may offer clues to how other planets with hydrogen-enveloped atmospheres could have their outer layers evaporated by their parent star, leaving behind solid, rocky cores. Hot, rocky planets such as these that roughly the size of Earth are known as Hot-Super Earths.
“This cloud is very spectacular, though the evaporation rate does not threaten the planet right now,” explains the study’s leader, David Ehrenreich of the Observatory of the University of Geneva in Switzerland. “But we know that in the past, the star, which is a faint red dwarf, was more active. This means that the planet evaporated faster during its first billion years of existence because of the strong radiation from the young star. Overall, we estimate that it may have lost up to 10 percent of its atmosphere over the past several billion years.”
Read more: www.nasa.gov/feature/goddard/hubble-sees-a-behemoth-bleed...
Caption: This artist's concept shows "The Behemoth," an enormous comet-like cloud of hydrogen bleeding off of a warm, Neptune-sized planet just 30 light-years from Earth. Also depicted is the parent star, which is a faint red dwarf named GJ 436. The hydrogen is evaporating from the planet due to extreme radiation from the star. A phenomenon this large has never before been seen around any exoplanet.
Credits: NASA, ESA, and G. Bacon (STScI)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Hubble sees a maelstrom of glowing gas and dark dust within one of the Milky Way’s satellite galaxies, the Large Magellanic Cloud. via NASA ift.tt/2cfZtVm
Cette photomosaïque de la galaxie d'Andromède, située à 2,5 millions d'années-lumière de la Terre, est la plus grande jamais créée à partir d'images du télescope spatial Hubble. Elle comprend plus de 600 images du télescope et a nécessité plus d'une décennie de travail. La photomosaïque comprend 200 millions d'étoiles, soit une fraction de la population d'étoiles estimée à mille milliards d'étoiles d'Andromède.
« Les régions intéressantes comprennent : (a) des amas d'étoiles bleues brillantes intégrées dans la galaxie, des galaxies d'arrière-plan vues beaucoup plus loin et un bombardement photographique par quelques étoiles brillantes au premier plan qui sont en fait à l'intérieur de notre Voie lactée ; (b) NGC 206, le nuage d'étoiles le plus visible d'Andromède ; (c) un jeune amas d'étoiles bleues nouveau-nées ; (d) la galaxie satellite M32, qui pourrait être le noyau résiduel d'une galaxie qui est entrée en collision avec Andromède ; (e) des bandes de poussière sombres à travers une myriade d'étoiles.
°°°°°°°°°°°°°°
This photomosaic of the Andromeda galaxy, located 2.5 million light-years from Earth, is the largest ever created using images from the Hubble Space Telescope. It features over 600 Hubble images and required over a decade to make. The composite features 200 million stars, a fraction of Andromeda’s estimated trillion-star population.
Interesting regions include: (a) Clusters of bright blue stars embedded within the galaxy, background galaxies seen much farther away, and photo-bombing by a couple bright foreground stars that are actually inside our Milky Way; (b) NGC 206 the most conspicuous star cloud in Andromeda; (c) A young cluster of blue newborn stars; (d) The satellite galaxy M32, that may be the residual core of a galaxy that once collided with Andromeda; (e) Dark dust lanes across myriad stars.
Crédit : NASA, ESA, Benjamin F. Williams (Université de Washington), Zhuo Chen (Université de Washington), L. Clifton Johnson (Northwestern) ; traitement des images : Joseph DePasquale (STScI)
__________________________________________PdF_____
This is an image of the Cartwheel Galaxy taken with the NASA/ESA (European Space Agency) Hubble Space Telescope.
The object was first spotted on wide-field images from the U.K. Schmidt telescope and then studied in detail using the Anglo-Australian Telescope.
Lying about 500 million light-years away in the constellation of Sculptor, the cartwheel shape of this galaxy is the result of a violent galactic collision. A smaller galaxy has passed right through a large disk galaxy and produced shock waves that swept up gas and dust — much like the ripples produced when a stone is dropped into a lake — and sparked regions of intense star formation (appearing blue). The outermost ring of the galaxy, which is 1.5 times the size of our Milky Way, marks the shock wave’s leading edge. This object is one of the most dramatic examples of the small class of ring galaxies.
Image Credit: ESA/Hubble & NASA
Black holes are often described as the monsters of the universe—tearing apart stars, consuming anything that comes too close, and holding light captive. Detailed evidence from the NASA/ESA Hubble Space Telescope, however, shows a black hole in a new light: fostering, rather than suppressing, star formation. Hubble imaging and spectroscopy of the dwarf starburst galaxy Henize 2-10 clearly show a gas outflow stretching from the black hole to a bright star birth region like an umbilical cord, triggering the already dense cloud into forming clusters of stars. Astronomers have previously debated that a dwarf galaxy could have a black hole analogous to the supermassive black holes in larger galaxies. Further study of dwarf galaxies, which have remained small over cosmic time, may shed light on the question of how the first seeds of supermassive black holes formed and evolved over the history of the universe.
This dwarf starburst galaxy Henize 2-10 sparkles with young stars in this Hubble visible-light image. The bright region at the center, surrounded by pink clouds and dark dust lanes, indicates the location of the galaxy's massive black hole and active stellar nurseries.
Credits: NASA, ESA, Z. Schutte (XGI), A. Reines (XGI), A. Pagan (STScI); CC BY 4.0
"A long time ago in a galaxy far, far away...."
A tribute to "The Hubble Space Telescope", that changed our view of the Universe and our place within it. This is a processing experiment using the FITS Liberator & Photoshop work-flow.
Best viewed LARGE!
The image is not at full resolution, but is still best viewed as LARGE as possible. Zoom in and out by clicking on the image (in a region without a note), or view in Lightbox Mode.
The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194), is an interacting grand-design Spiral Galaxy with a Seyfert 2 active Galactic Nucleus in the Constellation Canes Venatici.
M51 was recently estimated to be 23 million light-years from the Milky Way Galaxy, which means that this Hubble image shows us what the Whirlpool Galaxy looked like 23 million years ago, as the light took that long to reach us.
Data source:
Hubble Legacy Archive
Data format:
Narrowband monochrome FITS data.
Imaged by the Hubble Space Telescope (HST) in the following Wavelengths of the Light Spectrum:
435nm - Violet (close to Blue)
555nm - Green (close to Yellow)
658nm - Red
814nm - Infrared
Astrometry Info:
View this image in the World Wide Telescope.
&rotation=91.4815444651&name=The+Whirlpool+Galaxy+(M51)+-+Hubble+Legacy+Archive&reverseparity=False&scale=0.0707821842949&thumb=https://farm1.staticflickr.com/431/31989794445_896c351bb9_q.jpg&ra=202.467825173&y=2763&x=4000&dec=47.2130322091){kind=link}
RA, Dec center: 202.467825173, 47.2130322091 degrees
Orientation: 0.0955929231365 deg E of N
Pixel scale: 0.276492907402 arcsec/pixel
Processing Software:
ESA/ESO/NASA FITS Liberator & Photoshop.
Hubble Legacy Archive Credit:
Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).
Processing by Martin Heigan.
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The galaxy known as NGC 5907 stretches wide across this image. Appearing as an elongated line of stars and dark dust, the galaxy is categorized as a spiral galaxy just like our own Milky Way. In this new image from the NASA/ESA Hubble Space Telescope, we don’t see the beautiful spiral arms because we are viewing it edge-on, like looking at the rim of a plate. It is for this reason that NGC 5907 is also known as the Knife Edge galaxy.
The Knife Edge galaxy is about 50 million light-years from Earth, lying in the northern constellation of Draco. Although not visible in this image, ghostly streams of stars on large arching loops extend into space, circling around the galaxy; they are believed to be remnants of a small dwarf galaxy, torn apart by the Knife Edge galaxy and merged with it over 4 billion years ago.
Image credit: ESA/Hubble & NASA, R. de Jong; Acknowledgment: Judy Schmidt (Geckzilla)
This image shows the winding green filaments observed by the NASA/ESA Hubble Space Telescope within eight different galaxies. The ethereal wisps in these images were illuminated, perhaps briefly, by a blast of radiation from a quasar – a very luminous and compact region that surrounds a supermassive black hole at the centre of a galaxy.
In each of these eight images a quasar beam has caused once-invisible filaments in deep space to glow through a process called photoionisation. Oxygen, helium, nitrogen, sulphur and neon in the filaments absorb light from the quasar and slowly re-emit it over many thousands of years.
Their unmistakable emerald hue is caused by ionised oxygen, which glows green.
The Hubble team found a total of twenty galaxies that had gas ionised by quasars; those featured here are (from left to right on top row) the Teacup (more formally known as 2MASX J14302986+1339117), NGC 5972, 2MASX J15100402+0740370 and UGC 7342, and (from left to right on bottom row) NGC 5252, Mrk 1498, UGC 11185 and 2MASX J22014163+1151237.
Credit: NASA, ESA, Galaxy Zoo Team and W. Keel (University of Alabama, USA)
Ha 15 frames da 10 minuti in bin 1 a -15°C
OIII 10 frames da 10 minuti in bin 1 a -15°C
SII 14 frames da 10 minuti in bin 1 a -15°C
Telescopio di ripresa: TS 102/715 tripletto F5.6 (564mm)
Camera di ripresa: Moravian G2-8300 monocromatica
Montatura: Ioptron Ieq45pro
Guida: Qhy5LII monocromatica su Orion 80/400
Elaborazione: Pixinsight 1.8
Data di ripresa: 05-06-31/07/2018
I have recently published an article on narrowband imaging, and creating Hubble Palette astrophotography images.
This post should be useful for those looking to get into this type of imaging - as it took me quite a while to get up to speed on the subject myself!
astrobackyard.com/narrowband-imaging/
Here is Melotte 15 inside of the Heart Nebula in SHO (SII, Ha, OIII)
La nébuleuse planétaire NGC 2899 est située à 4 500 années-lumière de la Terre et à 25 895 années-lumière du centre galactique dans la constellation australe des Voiles (Vela). Cet objet présente un flux de gaz cylindrique, bipolaire et diagonal propulsé par le rayonnement et les vents stellaires d'une naine blanche située en son centre. En réalité, deux étoiles compagnes pourraient interagir et sculpter la nébuleuse, pincée en son centre par un anneau fragmenté (tore) qui ressemble à un beignet à moitié mangé. Elle présente une forêt de "piliers" gazeux pointant vers la source du rayonnement et des vents stellaires. Ses couleurs proviennent de l'hydrogène et de l'oxygène brillants (cf. NASA, ESA, STScI ; Image Processing : Joseph DePasquale STScI).
Pour situer la nébuleuse planétaire NGC 2899 (Hubble) dans la constellation australe des Voiles (Vela) :