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Shy exploring one of the Crooked River tributaries yesterday. This is weather, he was made for. Still offline, be back later this week.
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Model : Léane
Make-up : Emmanuelle Legrain
Hairstyle : Jessica Chatelain
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Model : Najate
Make-up: Barbara Charles
Hairstyle : Pamela Voisin
Christine Lebrasseur - Photographe
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the Week is the spiral galaxy NGC 2566, which sits 76 million light-years away in the constellation Puppis. A prominent bar of stars stretches across the centre of this galaxy, and spiral arms emerge from each end of the bar. Because NGC 2566 appears tilted from our perspective, its disc takes on an almond shape, giving the galaxy the appearance of a cosmic eye.
As NGC 2566 gazes at us, astronomers gaze right back, using Hubble to survey the galaxy’s star clusters and star-forming regions. The Hubble data are especially valuable for studying stars that are just a few million years old; these stars are bright at the ultraviolet and visible wavelengths to which Hubble is sensitive. Using these data, researchers will measure the ages of NGC 2566’s stars, helping to piece together the timeline of the galaxy’s star formation and the exchange of gas between star-forming clouds and stars themselves.
Several other astronomical observatories have examined NGC 2566, including the NASA/ESA/CSA James Webb Space Telescope. The Webb data complement this Hubble image, adding a view of NGC 2566’s warm, glowing dust to Hubble’s stellar portrait. At the long-wavelength end of the electromagnetic spectrum, NGC 2566 has also been observed by the Atacama Large Millimeter/submillimeter Array (ALMA). ALMA is a network of 66 radio telescopes that work together as one to capture detailed images of the clouds of gas in which stars form. Together, Hubble, Webb and ALMA provide an overview of the formation, lives and deaths of stars in galaxies across the Universe.
[Image Description: An oval-shaped spiral galaxy. Its core is a compact, glowing blue spot. A bright bar of light, lined with dark reddish dust, extends horizontally to the edge of the disc. A spiral arm emerges from each end of the bar and follows the edge of the disc, lined with blue and red glowing patches of stars, to the opposite end and a little off the galaxy. Blue stars are scattered between us and the galaxy.]
Credits: ESA/Hubble & NASA, D. Thilker; CC BY 4.0
Free download under CC Attribution (CC BY 2.0). Please credit the artist and rawpixel.com
Reijer Johan Antonie Stolk (1896–1945) was a Javanese born Dutch painter, sculptor, graphic artist, inventor and Batik artist. The colors and motifs in his later works were greatly inspired by his travel to Africa.
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This image shows a globular cluster known as NGC 1651. Like the object in another recent Picture of the Week, it is located about 162 000 light-years away in the largest and brightest of the Milky Way’s satellite galaxies, the Large Magellanic Cloud (LMC). A notable feature of this image is that the globular cluster almost fills the entire image, even though globular clusters are only about 10 to 300 light-years in diameter (NGC 1651 has a diameter of roughly 120 light-years). In contrast, there are numerous Hubble Pictures of the Week that feature entire galaxies — which can be tens or hundreds of millions of light-years in diameter — that also more or less fill the whole image.
A common misconception is that Hubble and other large telescopes manage to observe wildly differently sized celestial objects by zooming in on them, as one would with a specialised camera here on Earth. However, whilst small telescopes might have the option to zoom in and out to a certain extent, large telescopes do not. Each telescope’s instrument has a fixed ‘field of view’ (the size of the region of sky that it can observe in a single observation). For example, the ultraviolet/visible light channel of Hubble’s Wide Field Camera 3 (WFC3), the channel and instrument that were used to collect the data used in this image, has a field of view roughly one twelfth the diameter of the Moon as seen from Earth. Whenever WFC3 makes an observation, that is the size of the region of sky that it can observe.
The reason that Hubble can observe objects of such wildly different sizes is two-fold. Firstly, the distance to an object will determine how big it appears to be from Earth, so entire galaxies that are relatively far away might take up the same amount of space in the sky as a globular cluster like NGC 1651 that is relatively close by. In fact, there's a distant spiral galaxy lurking in this image, directly left of the cluster — though undoubtedly much larger than this star cluster, it appears small enough here to blend in with foreground stars! Secondly, multiple images spanning different parts of the sky can be mosaiced together to create single images of objects that are too big for Hubble’s field of view. This is a very complex task and is not typically done for Pictures of the Week, but it has been done for some of Hubble’s most iconic images.
[Image Description: A spherical collection of stars, which fills the whole view. The stars merge into a bright, bluish core in the centre, and form a sparse band around that out to the edges of the image. A few stars lie in front of the cluster, with visible diffraction spikes. The background is dark black.]
Credits: ESA/Hubble & NASA, L. Girardi, F. Niederhofer; CC BY 4.0
Benita, on the bank of the Betwa River, Orchhâ, Madhya Pradesh, India.
[...]
peindre ensuite
quelque chose de joli
quelque chose de simple
quelque chose de beau
quelque chose d'utile [...]
[...]
then paint
something pretty
something simple
something beautiful
something useful [...]
Jacques Prévert
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Christine Lebrasseur - Photographe
Christine Lebrasseur Photo Studio
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
1966 by Jess (American, 1923-2004)
Born Burgess Collins, Jess had worked as an engineer on the Manhattan Project. This multimedia work is part of "Plugged In: Art and Electric Light" currently at the Norton Simon Museum in Pasadena, California. My wife and I went there this past Friday for a mental health break while we are not able to return to our home in Altadena due to the Eaton Fire.
Flickr’s COO Ben MacAskill and the team at Creative Commons hosted a joint photowalk on Thursday May 9, 2019 in the beautiful city of Lisbon, Portugal. Local photographers, visitors and attendees to the Creative Commons Summit walked around and photographed the beautiful city of Lisbon.
This is how trees should be topped! This osprey was getting buffeted around a bit in the wind, the grainy background was a mizzle falling. So cool to get a bit of time to do some wildlife photography again.
Today is day 198 of Project 365 (Friday).
Cousins by Justin Stricklin is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
No awards... Merci :)
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Model : Ludivine
Christine Lebrasseur - Photographe
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The sparkling spiral galaxy gracing this NASA/ESA Hubble Space Telescope Picture of the Week is UGC 5460, which sits about 60 million light-years away in the constellation Ursa Major. This image combines four different wavelengths of light to reveal UGC 5460’s central bar of stars, winding spiral arms and bright blue star clusters. Also captured in the upper left-hand corner of this image is a far closer object: a star just 577 light-years away in our own galaxy.
UGC 5460 has hosted two recent supernovae named SN 2011ht and SN 2015as. It’s because of these two stellar explosions that Hubble targeted this galaxy, collecting data for three observing programmes that aim to study various kinds of supernovae.
SN 2015as was what’s known as a core-collapse supernova: a cataclysmic explosion that happens when the core of a star far more massive than the Sun runs out of fuel and collapses under its own gravity, initiating a rebound of material outside the core. Hubble observations of SN 2015as will help researchers understand what happens when the expanding shockwave of a supernova collides with the gas that surrounds the exploded star.
SN 2011ht might have been a core-collapse supernova as well, but it could also be an impostor called a luminous blue variable. Luminous blue variables are rare stars that experience eruptions so large that they can mimic supernovae. Crucially, luminous blue variables emerge from these eruptions unscathed, while stars that go supernova do not. Hubble will search for a stellar survivor at SN 2011ht’s location, and the explosion’s identity may be revealed at last.
[Image Description: A spiral galaxy seen close to face-on. The centre of its disc is a bright, pale yellowish oval shape. Spiral arms extend from either side of the oval through the disc on irregular paths. They are marked throughout by bright bluish-white patches of stars. Distant background galaxies appear as small orangish blobs around the spiral galaxy. In the top-left corner a nearby star shines brightly, spikes radiating from it.]
Credits: ESA/Hubble & NASA, W. Jacobson-Galán, A. Filippenko, J. Mauerhan; CC BY 4.0
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
What kind of astronomical object is this? It doesn’t look quite like the kinds of galaxies, nebulae, star clusters or galaxy clusters which Hubble normally brings us images of. In fact, this is a spiral galaxy, named UGC 10043 — we just happen to be seeing it directly from the side! Located roughly 150 million light-years from Earth in the constellation Serpens, UGC 10043 is one of the somewhat rare spiral galaxies that are seen edge-on.
From this point of view, we see the galaxy’s disc as a sharp line through space, overlain with a prominent dust lane. This dust is spread across the spiral arms of UGC 10043, but it looks very thick and cloudy when viewed from the side. You can even see the lights of some active star-forming regions in the arms, shining out from behind the dust. Strikingly, we can also see that the centre of the galaxy sports a glowing, almost egg-shaped ‘bulge’, rising far above and below the disc. All spiral galaxies have a bulge like this one as part of their structure, containing stars that orbit the galactic centre on paths above and below the whirling disc; it’s a feature that isn’t normally obvious in pictures of galaxies. The unusually large size of this bulge compared to the galaxy’s disc is possibly thanks to UGC 10043 siphoning material from a nearby dwarf galaxy. This may also be why the disc is warped, bending up at one end and down at the other.
Like most of the full-colour Hubble images released by ESA/Hubble, this image is a composite, made up of several individual snapshots taken by Hubble at different times and capturing different wavelengths of light. You can see the exact images used in the sidebar on this page. A notable aspect of this image is that the two sets of Hubble data used were collected 23 years apart, in 2000 and 2023! Hubble’s longevity doesn’t just afford us the ability to produce new and better images of old targets; it also provides a long-term archive of data which only becomes more and more useful to astronomers.
[Image Description: A spiral galaxy seen directly from the side, such that its disc looks like a narrow diagonal band across the image. A band of dark dust covers the disc in the centre most of the way out to the ends, and the disc glows around that. In the centre a whitish circle of light bulges out above and below the disc. The tips of the disc are a bit bent. The background is black and mostly empty.]
Credits: ESA/Hubble & NASA, R. Windhorst, W. Keel; CC BY 4.0
NO AWARDS... MERCI.
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Model : Nathalie
Make-up : Emmanuelle Legrain
Hairstyle : Jessica Chatelain
Christine Lebrasseur - Photographe
French Website / Site en français
Christine Lebrasseur Photo Studio on Facebook
DNA - Ipernity - YouTube - JPGMag - Facebook Page
We dont actually get much snow so always a bit of novelty factor associated. All the better on a day I dont have to go to work. Having said that I have not actually gone out in it - just lit the fire and pointed the camera out various windows!
Lou Doillon - Snowed In
The subject of this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 1637, a spiral galaxy located 38 million light-years from Earth in the constellation Eridanus.
This image comes from an observing programme dedicated to studying star formation in nearby galaxies. Stars form in cold, dusty gas clouds that collapse under their own gravity. As young stars grow, they heat their nurseries through starlight, winds, and powerful outflows. Together, these factors play a role in controlling the rate at which future generations of stars form.
Evidence of star formation is scattered all around NGC 1637, if you know where to look. The galaxy’s spiral arms are dotted with what appear to be pink clouds, many of which are accompanied by bright blue stars. The pinkish colour comes from hydrogen atoms that have been excited by ultraviolet light from young, massive stars. This contrasts with the warm yellow glow of the galaxy’s centre, which is home to a densely packed collection of older, redder stars.
The stars that set their birthplaces aglow are comparatively short-lived, and many of these stars will explode as supernovae just a few million years after they’re born. In 1999, NGC 1637 played host to a supernova, pithily named SN 1999EM, that was lauded as the brightest supernova seen that year. When a massive star expires as a supernova, the explosion outshines its entire home galaxy for a short time. While a supernova marks the end of a star’s life, it can also jump start the formation of new stars by compressing nearby clouds of gas, beginning the stellar lifecycle anew.
[Image Description: A spiral galaxy filling the view. Its disc is filled with bright red spots where stars are forming, dark reddish threads of dust that obscure light, and bluish glowing areas where older stars are concentrated. It has a large, glowing yellow oval area at the centre, from which two spiral arms wind through the galaxy’s disc. The bottom side of the disc is rounded while the top side is somewhat squared-off.]
Credits: ESA/Hubble & NASA, D. Thilker; CC BY 4.0
The swirling spiral galaxy in this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 3285B, which resides 137 million light-years away in the constellation Hydra (The Water Snake). Hydra has the largest area of the 88 constellations that cover the entire sky in a celestial patchwork. It’s also the longest constellation, stretching 100 degrees across the sky. It would take nearly 200 full Moons, placed side by side, to reach from one side of the constellation to the other.
NGC 3285B is a member of the Hydra I cluster, one of the largest galaxy clusters in the nearby Universe. Galaxy clusters are collections of hundreds to thousands of galaxies that are bound to one another by gravity. The Hydra I cluster is anchored by two giant elliptical galaxies at its centre. Each of these galaxies is about 150,000 light-years across, making them about 50% larger than our home galaxy, the Milky Way.
NGC 3285B sits on the outskirts of its home cluster, far from the massive galaxies at the centre. This galaxy drew Hubble’s attention because it hosted a Type Ia supernova in 2023. Type Ia supernovae happen when a type of condensed stellar core called a white dwarf detonates, igniting a sudden burst of nuclear fusion that briefly shines about 5 billion times brighter than the Sun. The supernova, named SN 2023xqm, is visible here as a blue-ish dot on the left edge of the galaxy’s disc.
Hubble observed NGC 3285B as part of an observing programme that targeted 100 Type Ia supernovae. By viewing each of these supernovae in ultraviolet, optical, and near-infrared light, researchers aim to disentangle the effects of distance and dust, both of which can make a supernova appear redder than it actually is. This programme will help refine cosmic distance measurements that rely on observations of Type Ia supernovae.
[Image Description: A spiral galaxy with a disc made up of several swirling arms. Patchy blue clouds of gas are speckled over the disc, where stars are forming and lighting up the gas around them. The core of the galaxy is large and shines brightly gold, while the spiral arms are a paler and faint reddish colour. Neighbouring galaxies - from small, elongated spots to larger swirling spirals - can be seen across the black background.]
Credits: ESA/Hubble & NASA, R. J. Foley (UC Santa Cruz); CC BY 4.0