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Edited European Southern Observatory/Deep Sky Survey 2 image of the globular cluster NGc 3201, set in a field of stars.
Original caption: This wide field view shows the sky around the globular star cluster NGC 3201 in the southern constellation of Vela (The Sails). As well as the rich cluster itself, which appears at the centre, this view also reveals huge numbers of stars within the Milky Way, along with a few much more distant galaxies. This picture was created from images forming part of the Digitized Sky Survey 2.
Object: Globular cluster
Constellation: Hercules
Distance: 25100 ly
Magnitude (visual): 5.8
EdgeHD 8 f/10
Canon 350D, modified
2X2 bin, ISO 100
1X5m
Processed in Nebulosity
Date: 3/3/11
A single 5m sub of one of my favorite DSOs, again from March 3/4 when I was trying out the Canon/EdgeHD combination for the first time.
Globular clusters are present in the halo that surrounds many galaxies and are essentially satellites of the parent galaxy. They are mostly composed of very old stars with low metallicity, classed as early generation (Population II) stars. M13 is one of the brightest globulars in our sky.
Edited European Southern Observatory image of the globular cluster Omega Centauri. Color/processing variant.
Original caption: This VST image may be the best portrait of the globular star cluster Omega Centauri ever made. Omega Centauri, in the constellation of Centaurus (The Centaur), is the largest globular cluster in the sky, but the very wide field of view of VST and its powerful camera OmegaCAM can encompass even the faint outer regions of this spectacular object. This view includes about 300 000 stars. The data were processed using the VST-Tube system developed by A. Grado and collaborators at the INAF-Capodimonte Observatory.
Edited Hubble Space Telescope image of the globular cluster NGC 1866. Processing variant.
Original caption: Star clusters are common structures throughout the Universe, each made up of hundreds of thousands of stars all bound together by gravity. This star-filled image, taken with the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3), shows one of them: NGC 1866. NGC 1866 is found at the very edges of the Large Magellanic Cloud, a small galaxy located near to the Milky Way. The cluster was discovered in 1826 by Scottish astronomer James Dunlop, who catalogued thousands of stars and deep-sky objects during his career. However, NGC 1866 is no ordinary cluster. It is a surprisingly young globular cluster situated close enough to us that its stars can be studied individually — no mean feat given the mammoth distances involved in studying the cosmos! There is still debate over how globular clusters form, but observations such as this have revealed that most of their stars are old and have a low metallicity. In astronomy, ‘metals’ are any elements other than hydrogen and helium; since stars form heavier elements within their core as they carry out nuclear fusion throughout their lifetimes, a low metallicity indicates that a star is very old, as the material from which it formed was not enriched with many heavy elements. It’s possible that the stars within globular clusters are so old that they were actually some of the very first to form after the Big Bang. In the case of NGC 1866, though, not all stars are the same. Different populations, or generations, of stars are thought to coexist within the cluster. Once the first generation of stars formed, the cluster may have encountered a giant gas cloud that sparked a new wave of star formation and gave rise to a second, younger, generation of stars — explaining why it seems surprisingly youthful.
Kaleidoscopic version of a Hubble Space Telescope image of the globular cluster NGC 6496.
Original caption: This 10.5-billion-year-old globular cluster, NGC 6496, is home to heavy-metal stars of a celestial kind! The stars comprising this spectacular spherical cluster are enriched with much higher proportions of metals — elements heavier than hydrogen and helium, are in astronomy curiously known as metals — than stars found in similar clusters. A handful of these high-metallicity stars are also variable stars, meaning that their brightness fluctuates over time. NGC 6496 hosts a selection of long-period variables — giant pulsating stars whose brightness can take up to, and even over, a thousand days to change — and short-period eclipsing binaries, which dim when eclipsed by a stellar companion. The nature of the variability of these stars can reveal important information about their mass, radius, luminosity, temperature, composition, and evolution, providing astronomers with measurements that would be difficult or even impossible to obtain through other methods. NGC 6496 was discovered in 1826 by Scottish astronomer James Dunlop. The cluster resides at about 35 000 light-years away in the southern constellation of Scorpius (The Scorpion).
Edited Hubble Space Telescope image (by way of the European Southern Observatory) image of the globular cluster Terzan 5.
Original caption: Peering through the thick dust clouds of the galactic bulge an international team of astronomers has revealed the unusual mix of stars in the stellar cluster known as Terzan 5. The new results indicate that Terzan 5 is in fact one of the bulge's primordial building blocks, most likely the relic of the very early days of the Milky Way. This image is from the NASA/ESA Hubble Space Telescope.
Messier 63 is also known as the Sunflower Galaxy and is one of the most beautiful galaxies in the night sky, so-called due to the wispy spiral arms and bright centre that give it a floral appearance. It may be a spiral, but the spiral arms are not as distinct, well-defined structures as those of the Whirlpool Galaxy, for example.
This image is a stack of 75 ten second exposures with my Seestar which has a relatively wide field of view compared to my Celestron C11. Another day I will try to get closer view with the C11.
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Picture taken using:
Seestar S50
75 Lights at 10 seconds
Bortle 4 sky.
Integrated in Astro Pixel Processor and processed in PixInsight.
Captions added in Photoshop CS4
#m63 #canesvenatici #sunflowergalaxy #globularcluster #globular #cluster #astrophotography
Equipment: Nikon D5300, Tamron SP 70-300mm f/4-5.6 Di VC USD lens, and iOptron Skytracker. Taken at 300mm, f/8.0, ISO 6400, 44 frames of 30 seconds each plus 30 darks. Stacked in Regim and cropped/processed in Lightroom.
Messier 13 or M13 (also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster) is a globular cluster in the constellation of Hercules.
M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.
It is located at right ascension 16h 41.7m and declination +36° 28'. With an apparent magnitude of 5.8, it is barely visible with the naked eye on a very clear night.
M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.
I composed this image, I took 5 subs, each for 30 seconds at ISO 800. The focus has very slightly moved after the telescope had slewed towards M13, resulting in slightly unfocused stars. The 5 subs were stacked in Deepsky Stacker and then enhanced in Photoshop CS4.
NGC6760 is a globular cluster in Aquila. It is located approximately 24,000 light years from Earth. It was discovered in 1845 by John Russel HInd.
This cluster is a DSO in the Astronomical League Universe Sampler program.
Imaged from New Florence, MO on August 14, 2015.
Celestron Nexstar 8SE
Orion EQ6
Canon T2i (modified)
5x450s
#NGC6760 #Globular #Space #Astronomy #Astrophotography
Edited Hubble Space Telescope image of the globular cluster M22. Dithered variant.
Original caption: This image shows the centre of the globular cluster Messier 22, also known as M22, as observed by the NASA/ESA Hubble Space Telescope. Globular clusters are spherical collections of densely packed stars, relics of the early years of the Universe, with ages of typically 12 to 13 billion years. This is very old considering that the Universe is only 13.8 billion years old. Messier 22 is one of about 150 globular clusters in the Milky Way and at just 10 000 Â light-years away it is also one of the closest to Earth. It was discovered in 1665 by Abraham Ihle, making it one of the first globulars ever to be discovered. This is not so surprising as it is one of the brightest globular clusters visible from the northern hemisphere, located in the constellation of Sagittarius, close to the Galactic Bulge â the dense mass of stars at the centre of the Milky Way. The cluster has a diameter of about 70 light-years and, when looking from Earth, appears to take up a patch of sky the size of the full Moon. Despite its relative proximity to us, the light from the stars in the cluster is not as bright as it should be as it is dimmed by dust and gas located between us and the cluster. As they are leftovers from the early Universe, globular clusters are popular study objects for astronomers. M22 in particular has fascinating additional features: six planet-sized objects that are not orbiting a star have been detected in the cluster, it seems to host two black holes, and the cluster is one of only three ever found to host a planetary nebula â a short-lived gaseous shells ejected by massive stars at the ends of their lives.
Edited Hubble Space Telescope image of the globular cluster Messier 53.
Original caption: Thousands and thousands of brilliant stars make up this globular cluster, Messier 53, captured with crystal clarity in this image from the NASA/ESA Hubble Space Telescope. Bound tightly by gravity, the cluster is roughly spherical and becomes denser towards its heart. These enormous sparkling spheres are by no means rare, and over 150 exist in the Milky Way alone, including Messier 53. It lies on the outer edges of the galaxy, where many other globular clusters are found, almost equally distant from both the centre of our galaxy and the Sun. Although they are relatively common, the famous astronomer William Herschel, not at all known for his poetic nature, once described a globular cluster as “one of the most beautiful objects I remember to have seen in the heavens”, and it is clear to see why. Globular clusters are much older and larger than open clusters, meaning they are generally expected to contain more old red stars and fewer massive blue stars. But Messier 53 has surprised astronomers with its unusual number of a type of star called blue stragglers. These youngsters are rebelling against the theory of stellar evolution. All the stars in a globular cluster are expected to form around the same time, so they are expected follow a specific trend set by the age of the cluster and based on their mass. But blue stragglers don’t follow that rule; they appear to be brighter and more youthful than they have any right to be. Although their precise nature remains mysterious these unusual objects are probably formed by close encounters, possibly collisions, between stars in the crowded centres of globular clusters. This picture was put together from visible and infrared exposures taken with the Wide Field Channel of Hubble's Advanced Camera for Surveys.The field of view is approximately 3.4 arcminutes across.
Edited Hubble Space Telescope image of the globular cluster NGC 1805 in the Large Magellanic Cloud.
Original caption: Many colourful stars are packed close together in this image of the globular cluster NGC 1805, taken by the NASA/ESA Hubble Space Telescope. This tight grouping of thousands of stars is located near the edge of the Large Magellanic Cloud, a satellite galaxy of our own Milky Way. The stars orbit closely to one another, like bees swarming around a hive. In the dense centre of one of these clusters, stars are 100 to 1000 times closer together than the nearest stars are to our Sun, making planetary systems around them unlikely. The striking difference in star colours is illustrated beautifully in this image, which combines two different types of light: blue stars, shining brightest in near-ultraviolet light, and red stars, illuminated in red and near-infrared. Space telescopes like Hubble can observe in the ultraviolet because they are positioned above Earth’s atmosphere, which absorbs most of this wavelength, making it inaccessible to ground-based facilities. This young globular cluster can be seen from the southern hemisphere, in the Dorado constellation, which is Portugese for dolphinfish. Usually, globular clusters contain stars which are born at the same time; however, NGC 1805 is unusual as it appears to host two different populations of stars with ages millions of years apart. Observing such clusters of stars can help astronomers understand how stars evolve, and what factors determine whether they end their lives as white dwarfs, or explode as supernovae.
Single 100 second shot.
Distance: 15,800 Light Years; Diameter: 230 Light Years.
Biggest and brightest globular cluster, with many millions of stars. May actually be a small galaxy containing a medium size black hole.
Messier 72
Stack Size:29
Exposure: 45s
ISO: 12800
Lens: 8in SCT with f/6.3 focal reducer
Camera: Canon Rebel T7i with Astro Mod
Here's my first image of the globular cluster, M3 in Canes Venatici. This cluster consists of roughly 500,000 stars, bound by gravity and orbits our galaxy. These stars are billions of years old, and very close together.
04/01/12
Joshua Tree National Park, CA
10 frames = 4 min 35 seconds ISO 3200
Images stacked in DeepSkyStacker
6" Meade Newtonian Reflector LXD75 EQ Mount
Canon Rebel T3 DSLR
Messier 11
Stack Size:30
Exposure: 45s
ISO: 6400
Lens: 8in SCT with f/6.3 focal reducer
Camera: Canon Rebel T7i with Astro Mod
Manually guided off-axis for 5 x 15-minute exposures at ISO 1600, f10. Images registered and stacked using DeepSkyStacker.
Unmodified Canon EOS 40D, Celestron C8 telescope.
Omega Centauri, a globular star cluster in the constellation Centaurus is about 15,800 light years away from where I was standing. Being 12 billion years old and having about 10 million stars, there were evidence that a black hole is pulling them together.
Edited Hubble Space Telescope image of the globular cluster Fornax 5 in the Fornax dwarf galaxy.
Original caption: This NASA/ESA Hubble Space Telescope image shows the globular cluster Fornax 5 in the dwarf galaxy Fornax. New observations of this cluster and three others in the galaxy show that they are very similar to those found in our galaxy, the Milky Way. The finding is at odds with leading theories on how these clusters form — in these theories, globular clusters should be nestled among large quantities of old stars — and so the mystery of how these objects came to exist deepens. This cluster’s position within the galaxy is shown in image G.
M13 is a globular cluster in the Hercules Constellation. It is estimated that there are approximately 500,000 stars in this cluster. It is about 25,000 light years away in our galaxy. This picture was taken October 8, 2007 by Doug Spalding near Butler, MO. Equipment used was a CGE1100 telescope equipped with Hyperstar (F/2) with an Orion DSCI II imager. 50 images X 30 sec each. Stacked with Maxim DL essentials.
Messier 70
Stack Size:30
Exposure: 45s
ISO: 6400
Lens: 8in SCT with f/6.3 focal reducer
Camera: Canon Rebel T7i with Astro Mod
9 minute total exposure of a globular cluster in Serpens Caput. Globular clusters are old -- about 13 billion years old -- and are leftover from the time the galaxy formed. Celestron Edge HD 9.25" with f/6.3 focal reducer; Atik 314L+ color camera; processing in Deep Sky Stacker, Fits Liberator, and Photoshop elements.
My very first deep sky objects pictures.
Taken on Mount Pinos, California, on 23-May-2009.
Canon XSI. CG5 GEM. William Optics 110.
M3 is a globular cluster in the constellation Canes Venatici
Optics: Takahashi FSQ-106N (530mm)
Camera: SBIG STF-8300M
Filters: Astrodon RGB Gen II
Mount: Astro-Physics 900GTO
Processing: CCDStack 2, Photoshop CS5
Exposure: Luminance 19 x 90 seconds, RGB 10 x 240 seconds.
Messier 71
Stack Size:30
Exposure: 45s
ISO: 6400
Lens: 8in SCT with f/6.3 focal reducer
Camera: Canon Rebel T7i with Astro Mod
M10, is a globular cluster 25,000 light years away. These are the oldest known bodies in the universe dating back over 13 billion years. They are thought to be failed galaxies which formed just after the big bang and there are at least 200 of them in our Milky Way alone. Notice how most of the stars are yellow or red which shows that they are relatively cool old stars. M10 is predicted to “core collapse” within the next 10 thousand million years, which will create an extremely high star density at its center.
This photo was taken with an SBIG astronomical camera through a 12" reflecting telescope and is a single 20 minute exposure.
Edited Hubble Space Telescope image of the globular cluster M22. Inverted color variant.
Original caption: This image shows the centre of the globular cluster Messier 22, also known as M22, as observed by the NASA/ESA Hubble Space Telescope. Globular clusters are spherical collections of densely packed stars, relics of the early years of the Universe, with ages of typically 12 to 13 billion years. This is very old considering that the Universe is only 13.8 billion years old. Messier 22 is one of about 150 globular clusters in the Milky Way and at just 10 000 light-years away it is also one of the closest to Earth. It was discovered in 1665 by Abraham Ihle, making it one of the first globulars ever to be discovered. This is not so surprising as it is one of the brightest globular clusters visible from the northern hemisphere, located in the constellation of Sagittarius, close to the Galactic Bulge — the dense mass of stars at the centre of the Milky Way. The cluster has a diameter of about 70 light-years and, when looking from Earth, appears to take up a patch of sky the size of the full Moon. Despite its relative proximity to us, the light from the stars in the cluster is not as bright as it should be as it is dimmed by dust and gas located between us and the cluster. As they are leftovers from the early Universe, globular clusters are popular study objects for astronomers. M22 in particular has fascinating additional features: six planet-sized objects that are not orbiting a star have been detected in the cluster, it seems to host two black holes, and the cluster is one of only three ever found to host a planetary nebula — a short-lived gaseous shells ejected by massive stars at the ends of their lives.
Comet Leonard is going to be the brightest comet in 2021. Now it's getting brighter and in half of December, it should reach 4th magnitude. On Friday 3rd of December, the comet was passing the globular cluster M3 in Bootes. Recently it was also one of a few days when it should be clear, so I had to use the opportunity. With my friends, we were going to the edge of Czech Paradise. Already the view through the tried uncovered two small, similarly bright, objects. After that, we set up also the bigger telescopes. Specifically, this pic was taken through an 11-inch telescope Celestron with Hyperstar adapter. It's only one single 15-second exposure. I tried to do also a stack, but DSS had problems with that so I have to be happy with this single-shot for now. Nevertheless, it's my best image of a comet yet (second in all) and absolutely best deep-sky image. Hopefully, it will be clear again in the next days to see the comet even brighter. Because on the 12th of December, it will be the last chance to see it from Czechia.
Celestron C11, Hyperstar v4, f/2.2, EQ6 Pro
Canon EOS 760D
EXIF: 15s, ISO 3200 single exposure
03/12/2021
Edited Hubble Space Telescope image of the globular cluster Fornax 2 in the Fornax dwarf galaxy.
Original caption:
This NASA/ESA Hubble Space Telescope image shows the globular cluster Fornax 2 in the dwarf galaxy Fornax. New observations of this cluster and three others in the galaxy show that they are very similar to those found in our galaxy, the Milky Way. The finding is at odds with leading theories on how these clusters form — in these theories, globular clusters should be nestled among large quantities of old stars — and so the mystery of how these objects came to exist deepens. This cluster’s position within the galaxy is shown in image G.
Messier Object M2 - Globular Cluster (NGC 7089)
Date: 09-26-2011
Telescope (Lens): Stellarvue SVR 80ED Raptor
Addition Optics: 2x Barlow
Camera: Canon XSi
Exposure: 40 x 120 sec (ISO 800)
Processing: DeepSkyStacker, Photoshop
Mount: Atlas EQ-G
Tracking: EQMOD / Stellarium
Guidance: PHD Guiding - 9x50 Finderscope w/ Logitech 3000 Pro Webcam
Setup: www.flickr.com/photos/nicholall/5523910532/in/set-7215762...
Astromomy weather as forcasted by Canadian Meteorological Center:
Cloud Cover: Clear
Transparancy: Above Average
Seeing Category: III (Average)
Temp: 55°F
Humidity: 65°
Light Pollution: "Red" - Based on Light Pollution Map
European Southern Observatory image of the globular cluster NGC 6725, found in the constellation Pavo.
M80 Globular Star Cluster, imaged by Monmouth School pupils by remotely controlling the 2.5m Faulkes Telescope North, on Maui, Hawaii.
Lights 50 x 60s f/5 ISO 400
Darks 30 x
Bias 99 x
Flats 108 x
Imaging: Canon 50D mounted on Skywatcher equinox 80mm with Televue TRF-2008 Reducer/Flattener
Guiding: Orion Starshoot on Skywatcher 80mm f/5 refractor.
I decided that i had enough lights and they were such good quality that 2x drizzle might make image a bit better with 2 x drizzle. Also updated with proper flats. Also did some PP to remove light pollution gradient.
This is an update to my previous M13 image: www.flickr.com/photos/torbenh/5737001536/
In the constellation Hercules. Thought to contain several hundred thousand stars the cluster is 22,500 light years from earth. Just visible above is NGC 6207 an edge-on spiral galaxy.
M3 (NGC 5272) is a globular cluster containing more than a half million stars. Located in the constellation Canes Venatici near the bright star Arcturus, the cluster is about 34,000 light years away. It is approximately 90 light years across and is more than 8 billion years old!
Seeing and transparency were terrible, but I wanted to test some new tweaks to my setup. Imaged from Lake St Louis, MO (an orange zone) on 4/16/2015 with a C8, EQ6, and T1i. 26 x 120s w Darks, Flats, Bias