ngc 6357 apparent magnitude

Cross Identifications: GC 4297, h 3682. Lobstering Days Over by Luminosity 7. ... Its brightness peaked in May, with an apparent magnitude of about 3. The star is moderately depleted in heavy elements, having 55% of solar abundance of iron, but is less depleted in oxygen, having 80% of its solar abundance. Historical Identification: Per Dreyer, NGC 6357 (= GC 4297 = JH 3682, 1860 RA 17 15 28, NPD 124 03.1) is "faint, large, extended, very gradually a little brighter middle, double star involved". Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. It can be occulted by the Moon and very infrequently by Venus. The Carina Nebula (NGC 3372), located roughly 7,200 light-years from Earth in the constellation Carina. [4] This planetary nebula has an apparent magnitude of 12.1. In the well-known constellation Scorpius lie a lot of conspicuous deep-sky objects. Size (arcmin): 50 x 40. distance to a star that has a period of 25 days and an apparent magnitude of 4.0. NGC 6334 lies about 5500 light-years from Earth in the constellation of Scorpius. The whole gas cloud is about 50 light-years across. NGC 6334 is one of the most active nurseries of massive stars in our galaxy and has been extensively studied by astronomers. The strange shapes taken by the clouds are a result of the vast radiation emitted by these huge, hot stars. ... and creating a bubble in NGC 6357. Its brightest star is V11, which has an apparent magnitude of 11.95. Near the more obvious Cat's Paw nebula on the upper right, the Lobster Nebula, on the lower left and cataloged as NGC 6357, houses the open star cluster Pismis 24, home to these tremendously bright and blue stars. The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. It is located in the constellation Scorpius, approximately 5,500 light-years away. NGC 2261 is a curious reflection nebula in Monoceros that's known as Hubble's Variable Nebula. Right ascension 16h 19m 55.07s Declination -15° 38' 24.8" Apparent magnitude (V) 12.2 Its X-ray output… 1.2 NGC 6357. NGC 7048 was discovered by Édouard Stephan on 19 October 1878 using a 31.5-inch reflector. M41 was mentioned by Aristotle about 325 B.C. William Herschel discovered the cluster in 1784, the nebula in 1785. It has an apparent magnitude of 1.87 and is approximately 300 light years distant from the solar system. Image credit: APOD The most prominent star of the open cluster Pismis 24 (top) is another object thought at one time to have several hundred solar masses, but now known to be at least a triple system – one where the components are each a hundred Suns. Emission nebula NGC 6357 and rich open cluster Pismis 24. 4.4). The brightest stars in M4 have an apparent magnitude of 10.8. With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects[18] making it visible to the naked eye from Earth on moonless nights, even when viewed from areas with moderate light pollution. NGC 6334 lies near the diffuse nebula NGC 6357, popularly known as the War and Peace Nebula, which also contains a number of young stars, as well as proto-stars embedded within dark disks of gas.

ago, it was a B star like many of its constellation neighbors. It has some of the largest stars known. This picture shows the sky around multiple star Gliese 667. ... NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius. Seen through a telescope, NGC 3532 is a very large, bright and rich cluster of stars of mags 7 to 13, most of which appear white in colour. IMAGE INFORMATION. The NGC 6334 complex, or the Cat's Paw Nebula, is a major star-forming region on the Sagittarius–Carina spiral arm close to the NGC 6357 complex (Persi & Tapia 2008). [7] A olho nu, o sistema é visto como uma estrela simples com uma magnitude aparente de 5,90. NGC 6357 is a region where radiation from hot, young stars is energizing the surrounding gas and dust. NGC 6772 is a small (81 arc seconds) 14th magnitude ancient bipolar planetary nebula in the constellation Aquila. NGC 6369, Planetary Nebula: Using the Mod 3 and 1.5x Barlow this was immediately apparent as a perfectly round smoke ring with a bright central star. Towards a census of the Galactic anticentre star clusters: colour-magnitude diagram and structural analyses of a sample of 50 objects. We investigate the distribution of gas (ionized, neutral atomic and molecular) and interstellar dust in the complex star-forming region NGC 6357 with We also focus on the compact cluster BDS101 NGC 6302 has an apparent visual magnitude of 7.1. It is an H II region and a double radio source. NGC 6357 is a star formation region 6500 light years away near the tail of the constellation Scorpius. ... an equation that expresses the relationship among apparent magnitude (m), absolute magnitude (M) and distance (d). NGC/IC Dreyer (1888, 1895, 1908) The NGC records it as "bright, considerably large, pretty rich, consisting of stars of 10th-13th magnitude." It is also known as the Lobster Nebula and the Madokami Nebula by some fans of the Japanese anime Madoka Magica due to its resemblance to the main character from the anime, and a popular fan petition to rename it. Pismis 24-1 has nearly 300 times the mass of the Sun. Lambda Scorpii A, the primary star in the system, is a hot blue-white subgiant star of the spectral type B2IV that has either already stopped fusing hydrogen in its core or will soon do so. The star system consists of Theta Scorpii A (Sargas) and Theta Scorpii B, a fainter companion at a separation of 6.470 arcseconds, detected in 2008. The third brightest star in the constellation Scorpius. as one of the mysterious “cloudy spots” then known in the sky. The Lobster Nebula. (m = apparent magnitude) (M = absolute magnitude) (d = distance in parsacs) Hubble's law. Pismis 24-1 has nearly 300 times the mass of the Sun. The presentobservations imply that it is optically thin and contains ~300Msolar of ionized gas. It is a multiple system of at least three stars. It has some of the largest stars known. NGC 6342, Globular Cluster: Very small even with the 1.5x Barlow. by the strong stellar winds. The Astrophysical Behavior of … It has an apparent magnitude of 5.9 and is approximately 7,200 light-years distant from the solar system. Image credit: APOD The most prominent star of the open cluster Pismis 24 (top) is another object thought at one time to have several hundred solar masses, but now known to be at least a triple system – one where the components are each a hundred Suns. The star has 5.7 solar masses, 26 … Diameter: 1833 light years. Rosette Nebula. ~ Loose irregularly shaped star cluster, containing from a few tens to a few thousand members. The small open star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 in Scorpius, about 8,000 light-years away from Earth. NGC 7048 is a planetary nebula in the constellation of Cygnus.The bright star to the lower left of the nebula is a magnitude 10.5 star, designated TYC 3589-4652-1. The brightest star in the constellation is Antares, Alpha Scorpii, with an apparent magnitude of 0.96. (5 pts) 0.5 points for each of the two following equations. EXPOSURES: 12 x 5 minutes . Also known as the Lobster Nebula and the War and Peace Nebula, NGC 6357 is a diffuse nebula. The NGC 5793's location is 14 59 24.807 (R.A.) and -16 41 36.55 (Dec.). Located 300 million light-years away in the constellation Coma Berenices, the colliding galaxies have been nicknamed "The Mice" because of the long tails of stars and gas emanating from each galaxy. Apparent Magnitude: 8.4 : Apparent Diameter: 7.2 (arc minutes) NGC Home NGC 6355 | NGC 6357. Whatever you call it, you'll find this great object 3.3° north-northwest of … NGC 6357, yew cısmê asmêniyo.No cısım Katalogê Neweyê Pêroyi de taxımestareya Demaşkul miyan de ca gêno. The hot gas cloud has a diameter of about 400,000 light years, roughly twice that of the visible galaxy (right). In fact, several stars with a mass much higher than that of the Sun have been discovered inside it. Magnitude: +10.0. NGC 6334, 6357, & Pismis 24. Rho Ophiuchus is such a great area, one of the most spectacular regions , not so apparent visually... Forum: Observational and Visual Astronomy 23-07-2021, 05:32 PM Pismis 24-1 consists of at least three objects and … apparent diameter of 2.6 , a distance of 290 pc (too short for the NGC 6357 complex), and an age of 7 Myr. The star clusters M34 and NGC 1039 : This beautiful open cluster M34, discovered by Giovanni Battista Hodierna and published in 1654, has nearly the same apparent size as the full moon. NGC 6357: Cathedral to Massive Stars. As rough guide, the location is located in the constellation of Pisces. It was discovered by William Herschel in 1783 and is illuminated by variable star R Monocerotis (R Mon). Use: M=-2.8log 10T-1.43 T is period AND: m-M=5log 10(d) -5 d is in parsecs, M is absolute magnitude, m is apparent magnitude M=-5.34 (intermediate step, 1 point) In this time, I saw 103 Perseids and 40 other meteors. Its peak apparent magnitude was 17. On photographs is measures 14' and is visible to the naked eye at magnitude … ~14 ° – Skat , right leg of the water bearer The central star, a white dwarf, has a surface temperature in excess of 200,000 K, which makes it one of the hottest stars in the galaxy. M4, NGC 6121, globular cluster in Scorpius UKS 4. M41 is also referred to as the Little Beehive Cluster, but I can’t find the exact reference. upcoming projects; completed projects; international associates; interiors; contact us; home; about us. In our era, Scorpius is now the 33rdlargest constellation out of the 88 modern constellations in the sky, occupying an area of around 497 square degrees. Digitized Sky Survey image of NGC 6337. In the constellation can also be found several beautiful nebulae, including the Cat’s Paw Nebula (NGC 6334), the War and Peace Nebula (NGC 6357), and the Butterfly Nebula (NGC 6302), which is a bipolar planetary nebula situated 3,800 light years away with a wingspan of 3 light years, and a visual magnitude of +7.1. Consequently, both ion- ized shells may be one structure ionized by the UV pho- 4.1 The central region of NGC 6357 tons of some of the massive stars in Pis 24 and swept-up Two optical shells are apparent near the centre of Fig. In comparison, the mean magnitude of the sporadic (random) meteors was 2.9. The scenario possibly explains the apparent age differences among the young O stars in NGC 6334, which range from 10 4 yr to 10 6 yr; the latest collision happened within 10 5 yr toward the youngest stars in NGC 6334 I(N) and I which exhibit molecular outflows without H II regions. NGC 2997 is a barred spiral galaxy (SBc) in the constellation Pump. Image FOV: roughly 5º x 3.4º . Saturn is on its way up in the pre-dawn sky and Venus is on its way down. The galaxy pair NGC 5194/95 (M51) is one of the closest and best known interacting systems. The star cluster Pismis 24 sits in the core of the large emission nebula NGC 6357. Abstract. Messier 4 (M4, NGC 6121) Messier 4 is a globular cluster in Scorpius. INSTRUMENT: Canon EF 2.8 / 200 mm stopped at f4 lens . Due to its high mass, it will probably end its life in a supernova explosion. War and Peace Nebula (NGC 6357) This diffuse nebula got its name from the fact that when viewed in infrared light, the eastern lobe resembles a human skull, while the western lobe somewhat resembles a dove. Pismis 24-1 is the largest star in the open cluster Pismis 24, located within the nebula NGC 6357. Related Papers. Because the visible brightness decreases with the … Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. This cluster has been studied very carefully by astronomers, especially those interested in stellar formation and evolution models. Lobster Cage Reflection by Evelyn Burns. He found the cluster on January 18, 1784 and cataloged it as H VIII.5, and the nebula on December 26, 1785, and assigned it the number H V.27. It has some of the largest stars known. On photographs is measures 14' and is visible to the naked eye at magnitude … If the number is negative, it is "west" of the March Equinox. The open star cluster Pismis 24 is in the nebula NGC 6357. The brightest star in Leo is Regulus, Alpha Leonis, with an apparent magnitude of 1.35. It is approximately 4000 light years from Earth and was discovered by William Herschel on 21 July 1784. Which DSO contains one of the hottest stars discovered within 1 kpc of the Sun? Given its visual magnitude of 12.3, NGC 6337 is visible with the help of a telescope havng an aperture of 8 inches (200mm) or more. Theta Scorpii is an evolved bright yellow giant star belonging to the spectral class F0 II. 2020 August 30. The open star cluster Pismis 24 is in the nebula NGC 6357. NGC 6357 is an emission nebula located in the constellation Scorpius. This region, well known as a fast paced star birth one, hosts many very massive and luminous stars. Its central open cluster (Pismis 24) hosts at least 20 stars with masses above 10 solar masses, with some above 100 solar masses. M13 has several hundred thousand stars, but is barely visible from Earth, with an apparent magnitude of 5.8. NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius. The Right Ascension is the angular distance of an object along the celestial equator from the March Equinox. … The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree in the sky in the constellation Scorpius. Apparent size of NGC 6337. The Chrismas Tree Cluster and the Cone Nebula were both discovered by William Herschel. NGC 5793 Location. CAMERA: Canon 60Da. Omega nebula (Swan nebula; Horseshoe nebula; M17; NGC 6618) An emission nebula with a conspicuous bar that lies at a distance of 2200 parsecs in the constellation of Sagittarius, very close to its northern boundary with Scutum. Distance: 8.000 light years for NGC 6357 . The nebula contains many proto-stars shielded by dark discs of gas, and young stars wrapped in expanding "cocoons" or expanding gases surrounding these small stars. Name(s): NGC 6357. The Antares nebula UKS 38. FILTERS: none . It is a multiple system of at least three stars. We here use VVV data to constrain not only parameters, but the nature it-self of this object as a young stellar cluster or an OB associa-tion (Sect. Pismis 24 is an open cluster inside NGC 6357, an emission nebula located about 8000 light years away from Earth. 57. Planetary system. This striking view of the central parts of the Milky Way was obtained with the VISTA survey telescope at ESO’s Paranal Observatory in Chile. The companion has an apparent magnitude of Globular Cluster (M13, NGC 6205)- A globular cluster (hence the name) about 25,100 LY away and 145 LY across in the constellation Hercules. It’s a star-forming area in the constellation Scorpius. NGC/IC Dreyer (1888, 1895, 1908) The NGC records it as "bright, considerably large, pretty rich, consisting of stars of 10th-13th magnitude." The first image is a close up of the region from a ground-based observation. Largest Catalog Ever of Center of the Milky Way. Saturn is at an apparent magnitude 0.53 and peaks on June 2nd at 0.00 apparent magnitude. It was the first globular cluster discovered in which individual stars could be resolved. It is one of the most luminous stars known. The nebula contains many proto-stars shielded by dark disks of gas, and young stars wrapped in expanding “cocoons” or expanding gases surrounding these small stars. A Catalog of 120 NGC Open Star Clusters. X-rays can penetrate the shrouds of gas and dust surrounding infant stars like those in NGC 6357. Image Credit: NASA, ESA and Jesús Maíz Apellániz ( IAA, Spain); Acknowledgement: Davide De Martin ( ESA/Hubble ) Explanation: How massive can a normal star be? The strange shapes taken by the clouds are a result of the vast radiation emitted by these huge, hot stars. The Chandra image of NGC 4555 revealed that this large, isolated, elliptical galaxy is embedded in a cloud of 10-million-degree Celsius gas (left). Its membership of Emission nebula NGC 6357 and rich open cluster Pismis 24. This item is one of those listed in the original edition of the New Shared Catalog. 84 27. Eta Carinae and HD 93129A, two of the most massive and luminous stars in our Milky Way galaxy, are among them. Apparent size of NGC 6281 (b)What is the visible luminosity of this Cepheid, in Solar luminosities? A stack of bright yellow lobster cages stacked on a dock reflect in the sometimes calm waters of the Maine harbor. Image: The star clusters of Butterfly is characterized by the presence, among many blue stars, an orange-yellow supergiant, apparent magnitude 4.2. credit ESO: GigaGalaxy Zoom : Zoom on War and Peace Nebula, NGC 6357 Distance: 8000 ly Photometric information of NGC 6337. M82 X-2 is an X-ray pulsar located in the galaxy … Extending westward from NGC 5195 is a low surface brightness tidal tail, which can only be seen in deep broadband exposures. Venus and Saturn in the pre-dawn hours 1-21-16 - posted in Beginning Deep Sky Imaging: Venus and Saturn in the pre-dawn hours 1-21-16 This is my last post of the night, and involves Saturn and Venus. Asmên; Galaksi; Estare; Pulsar; Nebula; Lista cısmanê NGC; Gırey teberi. SKY CONDITIONS: rural skies . Otherwise known as NGC 4676, the pair will eventually merge into a single giant galaxy. Leo contains five Messier objects: Messier 65 (M65, NGC 3623), Messier 66 (M66, NGC 3627), Messier 95 (M95, NGC 3351), Messier 96 (M96, NGC 3368) and Messier 105 (M105, NGC 3379 ) It has 11 major stars. Score 3/5. NGC 7822. NGC 6334 and NGC 6357 in the Milky Way UKS 30. The star has 14.5 solar masses and a radi… Apparent Magnitude: N/A. … In July 2006, ESO's Very Large Telescope took images of a stellar firework in the spiral galaxy NGC 1288. company overview a. NGC 7822 b. NGC 6357 c. RCW 103 d. SN W49B Gliese 667 (GJ 667) é um sistema estelar triplo na constelação de Scorpius.Com base em medições de paralaxe do satélite Hipparcos, é um sistema próximo localizado a uma distância de 23,6 anos-luz (7,2 parsecs) da Terra. 86 10. The nebula is slightly brighter along the west and east sides. Antares and the Rho Ophiuchi dark cloud (Scorpius/Ophiuchus) UKS 10. MOON PHASES: New moon: Sept. 1 First quarter: Sept. 9 Full moon: Sept. 16 Last quarter: Sept. 23 (Gerry Lebing is a retired computer scientist with the U.S. Geological Survey in Washington, D.C. One of the clusters, Pismis 24, contains a large number of … 8 Heziran 1837 de terefê John Herscheli ra keşıf biyo.. Bıvênên. It is a multiple system of at least three stars. It has a large apparent diameter, about 50', and often appears more striking in smaller aperture low-power telescopes which are capable of including more of the surrounding sky, thus giving better contrast. The Chandra image of NGC 4555 revealed that this large, isolated, elliptical galaxy is embedded in a cloud of 10-million-degree Celsius gas (left). The hot gas cloud has a diameter of about 400,000 light years, roughly twice that of the visible galaxy (right). Young star-forming complex. M82 X-2. Pismis 24-1 has nearly 300 times the mass of the Sun. It has a visual magnitude of 5.7/8.1 and is approximately 1,950 light years distant from the Sun. Some sources give the spectral type F0 II, indicating a bright giant. NGC 6242, an open cluster AAT 121. Designation: NGC 2070, Caldwell 103, in constellation of Dorado. ... NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius. I was pleased to manage to capture the rarely-seen outer Ha shell. This little boat has seen the last of its lobstering days as it sits in the front yard of a riverside house. The nebula's apparent magnitude is 7. Several luminous mid-infrared sources in the central 10' aligned along the … “NGC 2359 Thor’s Helmet, M42 Orion Nebula, NGC 6032 Open cluster of the stars & NGC 6357 Lobster Nebula..” Galaxy merger caught by Hubble telescope Scientists created a video tour of the spiral galaxy NGC 7714 getting twisted out of shape after coming too close to a cosmic neighbor. Part of the nebula is ionized by the youngest (blue) heavy stars emitting intense ultraviolet radiation, heating the gas surrounding the cluster, and creating a bubble in NGC 6357. The star HD 189567 is also known as Gliese 776, CD-67 2385, and HR 7644. Theta Scorpii has the stellar classification F1 III, indicating a giant star appearing white or yellow-white in colour. This image is a composite of data taken with two of Hubble's science instruments. Dec: -34º 12’ 17” Constellation: Scorpius. Emission Nebula NGC 6357. More on NGC 6357 A supernova SN 2003jg of type Ib has erupted in the galaxy. It also has 13 stars with known planets. ... What is the apparent magnitude of this binary star system? The highlights were Perseid fireballs at 3:11am and 3:37am that left glowing trains that were visible for 6 minutes and 10 minutes, respectively. Despite its notoriety, however, many of its features are not well studied. dimension is measured accurately, for four reasons: The distance d to the star must be known to become apparent in absolute magnitude. The analogue we have chosen is a gas pillar that forms part of the youngest H ii region (G353.2+0.9) in NGC 6357 (RCW 131, W 22, Sh-2 11), a large H ii region/molecular cloud complex in the Sagittarius spiral arm of the Milky Way. The strange shapes taken by the clouds are a result of the vast radiation emitted by these huge, hot stars. War and Peace Nebula, Lobster Nebula. (d)The e ective temperature of Star B is 3,500 K. Use the Stefan-Boltzmann law to cal- ... NGC 6357 … Lambda Scorpii consists of three components: two B-type stars, appearing bluish in colour, and a faint pre-main sequence companion. M41 has an apparent magnitude of 4.5 and is about 2,300 light years from Earth. NGC 1333 is a reflection nebula, where starlight is reflected by interstellar dust. It currently contains hundreds of stars less than a million years old. Radio source at the center of a galaxy, and location of a supermassive black hole. Interstellar Cloud. Apparent magnitude (V) 11.00: SW: Right ascension: 17 h 24 m 43.481 s: Declination –34° 11′ 57.21″ Apparent magnitude (V) 11.10: Characteristics NE Spectral type: O3.5If* SW Spectral type: O4III(f +) Astrometry; Radial velocity (R v) −2.0 km/s: Proper motion (μ) RA: −0.1 mas/yr Dec.: −1.3 mas/yr: Distance: 6,500 ly (2,000 pc) Scorpius X-1 is an X-ray source located roughly 9000 light years away in the constellation Scorpius. Optical Imaging and Spectroscopy of the H II Region G353.2+0.9 in NGC 6357 and Its Relation to Pismis 24 G353.2+0.9 is the brightest H II region in NGC 6357. It has an apparent magnitude of 10.43 and an absolute magnitude of -6.3. NGC 3372 aka ETA Carina The Carina Nebula (also known as the Great Nebula in Carina, the Eta Carinae Nebula, or NGC 3372) is a large bright nebula that surrounds several open clusters of stars. NGC 6357 Bright (emission and/or reflection) nebula in Scorpius Dreyer's description: F, L, E, vglbM, D* inv . By cjb b and Denilso Camargo. Resumen. ~ NGC 6823 surrounded by the emission nebula NGC 6820, image: Hewholooks at wikipedia.org NGC 6885 (Caldwell 37) NGC 6885 is an open star cluster. Ashraf Tadross. HD 189567 is a G2V star located 58.4 light years away, in the constellation of Pavo. Also known as the War and Peace Nebula, this emission nebula's catalog designation is NGC 6357. Visual magnitude: +5.0 Apparent size: 40 x 25 arc-minutes. NGC 6334 is also known as the Cat’s Paw Nebula or the Bear Claw Nebula and is located in the constellation Scorpius. The Perseids seemed bright on average, with a mean magnitude of 1.5. Available Resources for NGC 6337 - Planetary Nebula in Scorpius. It was created by combining thousands of individual images from VISTA, taken through three different infrared filters, into a single monumental mosaic. The American Astronomical Society (AAS), established in 1899 and based in Washington, DC, is the major organization of professional astronomers in North America. The nebula is unusual in that it changes shape over a period of just days and can vary by up to 2 magnitudes in brightness. ... (HD 168076) has an apparent magnitude of +8.24, easily visible with good binoculars. Some of the stars in this cluster are extremely massive and emit intense ultraviolet radiation. No bright stars but resolved across the core into perhaps 2 dozen stars. What is its absolute visible magnitude? The Messier object M34 fairly bright and extended, contains hundreds of stars, the brightest has an apparent magnitude … Type: Emission Nebula. This infrared image shows part of NGC 2174, the Monkey Head Nebula. RA: 17h 25m 02s. Scorpius contains four Messier objects – Messier 4 (M4, NGC 6121), Messier 6 (M6, NGC 6405, Butterfly Cluster), Messier 7 (M7, NGC 6475, Ptolemy Cluster) and Messier 80 (NGC 6093). NGC 6357: Cosmic 'Winter' Wonderland. NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius. The absolute star magnitude that the star would possess if it were 10 parsecs of the viewer. Scorpius X-1 was the first extrasolar X-ray source discovered, and, aside from the Sun, it is the strongest apparent source of X-rays in the sky. NGC6357 is 8,000 light years away and has an apparent magnitude of +10. Physical Information: NGC 6357 is an emission nebula associated with several clusters of stars recently formed, and still in the process of formation. G353.2+0.9 is ionized by the open cluster Pismis 24. This composite contains X-ray data from Chandra (purple) plus infrared (orange) and optical data (blue). It is probably expanding into thesurrounding medium as a result of its higher thermal pressure. Given its visual magnitude of 5.4, NGC 6281 is barely visible to the naked eye, easily visible with the help of a small binocular. The open star cluster Pismis 24 is in the nebula NGC 6357. The brightest object in the picture is designated Pismis 24-1. With an apparent magnitude of 5.8, it is barely visible with the naked eye on a very clear night. The overall red glow near the inner star forming region results from the emission of ionized hydrogen gas. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. No one is yet sure. The supernova -- designated SN 2006dr -- was … ... the Ring Nebula has an apparent magnitude of … And below is NGC 6357. NGC 2264.

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