20,000 solar masses Magnitudes are given without a decimal point, e.g. Open clusters NGC 884 and NGC 869 form the Double Cluster in … August 16, 2020. View. godine. This is Part of the Double Cluster imaged during the moon phase so not the best conditions. NGC 869 and NGC 884 - The Double Cluster - Open Clusters NGC 869 and NGC 884 are two bright open clusters in the constellation of Perseus, that are separated by only half a degree of apparent sky. Even under moderately dark skies, the double cluster in the constellation of Perseus is easily seen with the naked eye. This was taken on September 4, 2011 at the usual location - Cheveresul Mare, near Timisoara. The clusters are dominated by bright blue stars and, speckled with a few fine orange stars, make a spectacular sight in the night sky, especially through binoculars. The Double Cluster (h and Chi Persei; NGC 869 and NGC 884) consists of two young open clusters that lie close together in the sky in Perseus and are visible to the naked eye on a clear, dark night as a hazy patch of light. Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC … Also known as h Persei and χ Persei (h and Chi Persei), the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old. Email Friend. The famous Double Cluster in the constellation of Perseus consists of the star clusters h and chi Persei, which lie some 7100 and 7400 light-years away from Earth, respectively, and appear very close to each other on the sky. NGC 869, also known h Persei, is on the left, with NGC 884, also known as chi Persei, on the right. Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. NGC 869 is estimated to be 7,000 light years distant. Distance: 7,600 light years (2,300 parsecs) Double cluster in perseus is one of the most spectacular objects in the sky - easily visible with a naked eye even under moderate conditions (at it's combined magnitude of 4.3m). The Double Cluster is a large, bright and easy target to photograph for any amateur astrophotographers. Apparent size: 30′ Astronomers number its age to a few million years, i.e. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. a relatively young cluster. Now known respectively as h and chi Persei, or NGC 884 (to the east, or left, of the image) and NGC 869 (the cluster to the west, or right, of the image), the clusters themselves are separated by only a few hundred light-years and contain stars much younger and hotter than the Sun. Double Cluster (NGC 884 and NGC 869) in Perseus. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. This book contains more than 200 pages to memorialize your stargazing and imaging sessions, as well as a useful chart on the last pages to index exciting or important notes. NGC 869 and NGC 884 can be found 7,500 light-years away in the constellation Perseus. Written By Jason Matter. A pair of star clusters, collectively known as the Double Cluster, shines from the constellation Perseus. Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC 869. Both can be seen with the unaided eye and are usually easy to find if you are observing from a dark location. The star 7Per . Thankfully, we did not plan to take exposures longer than 30 seconds anyway as this is what we usually do for star clusters. Constellation: Perseus The cluster lies near the radiant of the Perseid meteor shower, which peaks annually in mid-August. NGC 869 & NGC 884 (LRGB), with the ASI 1600MM, Filters: L (10 minutes) / R (5 minutes) / G (5 minutes) / B (5 minutes). The clusters are about 7,500 light-years from us. There are no faint gases to show off, and no spiral arms to enhance. NGC 869 has a mass of 3700 solar masses and NGC 884 weighs in at 2800 solar masses; however, later research has shown both clusters are surrounded with a very extensive halo of stars, with a total mass for the complex of at least 20,000 solar masses. Both clusters are blueshifted: NGC 869 is approaching us at a speed of 39 km/s, while NGC 884 is moving in Earth’s direction at 38 km/s. NGC 884 је расејано звездано јато у сазвежђу Персеј које се налази на NGC листи објеката дубоког неба.. Деклинација објекта је + 57° 7' 48" а ректасцензија 2h 22m 5,0s. The Double Cluster (also known as Caldwell 14) is the common name for the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Both are visible with the naked eye. Make sure to follow us on Facebook, Instagram, and YouTube to stay up to date with our work! I may make this a mosaic and capture the other half to complete it. The star 7Per . The western component of the pair, h Persei, entry 689 in the New General Catalogue (NGC 689), is about 5.6 million years old, while Chi Persei (NGC 884) is closer to 3.6 million years old. Mass: 3,700 solar masses Each of the clusters contain more than 300 blue/white super-giant stars, many of which are visible in photographs. Looking at the double cluster through binoculars is a beautiful sight, with both clusters of stars looking like two worlds dancing together. Individually, the clusters have a mass of 3,700 solar masses (NGC 869) and 2,800 solar masses (NGC 884), but as each cluster is surrounded by an extended halo of stars, the total mass of the Double Cluster is at least 20,000 solar masses. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … In comparison, the Pleiades cluster (Messier 45) has an estimated age between 75 and 150 million years. The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. The clusters have a combined visual magnitude of 3.7 and 3.8 and are visible to the naked eye as a fuzzy patch between Perseus and Cassiopeia. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus.It is the easternmost of the Double Cluster with NGC 869.NGC 869 and 884 are often designated h and χ Persei, respectively. Image: Genuson at wikipedia.org. The two clusters are separated by only hundreds of light years. The smaller open cluster is similar in age and distance from Earth to its larger neighbour and possibly shares the same origin. This pair of open clusters lie about 7,000 light-years away from Earth. The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Print. Double Cluster NGC 869 and NGC 884. Bortle 6 skies, T-4, S-3. 10 f/4.7 dob. We show that the material with T~300-400 K andLd/L*~10-4 to 10-3 producesthe excesses in these sources. The Double Cluster (also known as Caldwell 14) is the common name for the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. The Double Cluster in Perseus (NGC 869 and NGC 884) are two open clusters in the constellation Perseus. The cluster is most likely around 12.5 million years old. Apparent magnitude: +3.7 NGC869 and NGC884 --- The Double Cluster August 15, 2002. Although their discovery surely predates written history, the Greek astronomer Hipparchus notably cataloged the "double cluster". The clusters are relatively young at 5.6 and 3.2 million years old respectively. View full resolution image. NGC 869 & NGC 884 - The Double Cluster in Perseus, We imaged the Double Cluster after spending three hours on the. Mosaic of 3 LRGB images. For those used to a narrow field of view, click here. They are both part of the so-called Perseus OB1 association, an assembly of extremely massive stars. NGC 869 & NGC 884 The Double Cluster LRGB Post by Astrovetteman » Thu Nov 07, 2019 12:23 am Here's a quick shot that I took last night of the Double Cluster. In mythology, the Double Cluster represents the jewelled handle of Perseus’ sword, given to the hero by the gods, along with a shield and a helmet, to help him in his challenges. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus. The Luminance filter was used for longer than the other three as this is where almost all the details come from. If the Double Cluster were as close to us as the Pleiades (444 light years), it would occupy a quarter of the northern sky and contain some of the brightest stars visible from Earth. I also added 5 dark frames in the process to reduce the … Ptolemy listed the cluster as of the seven “nebulosities” in his Almagest. They're especially bright because they are quite young, so they still contain some especially vigorous young stars. Prvo otkriće je napravio Hipparchus-130. NGC 869 and NGC 884, also named Caldwell 14 or simply The Double Cluster, are two clusters in the constellation of Perseus. Easy to spot in the northern winter sky between the constellations of Perseus and Cassiopeia, the Double Cluster is a favourite of amateur astronomers. NGC 869 and 884 are often designated h and χ Persei, respectively. 7500 light years. The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. The Constellations Handbook is not just another guide listing all the constellations from A to Z and their location, it is the perfect companion for stargazing, and a learning journey through the ages. Each cluster contains more than 300 blue-white supergiants and their hottest stars on the main sequence belong to the spectral class B0. NGC 869 and NGC 884 both lie at a distance of 7500 light years. These open clusters formed relatively recently in astronomical terms and move together through space, approaching us at a speed of roughly 80 000 kilometres per hour. The Double Cluster occupies a total area of 60 arc minutes of apparent sky, which is twice the size of a full Moon. The only tricky part about processing the Double Cluster is when making a Star mask. Right ascension: 2h 20m At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. The Double Cluster in Perseus is a beauty and fits perfectly in the 1.4° true field of view provided by my 32 mm plössl. These two are among the youngest star clusters known. Although we wish to have spent more time on it, and of course used guiding, we are glad the image turned out as great as it did. The Double Cluster (Caldwell 14) is the common name for the naked-eye open clusters NGC884 and NGC869 (often designated Chi Persei and H Persei, respectively), which are close together in the constellation Perseus. Brunier. Normal Inverted monochrome Large size Full size User. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. We imaged the Double Cluster in Perseus with 4 filters: As with most of our images, we like to show you the stacked image for each individual filter, sadly, these files are lost for this particular target. Sljedeći spisak sadrži deset najbližih NGC/IC objekata. Image: ESO/S. They are both located at a distance of 7000 light-years, and are very young for star clusters, NGC 869 being 5.6 million years old, and NGC 884 being 3.2 million years old. NGC 884 Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories? Double cluster • Chi Per • OCL 353 [2] [3] Karta; Portal Astronomija: NGC 884 je otvoreno zvjezdano jato i nalazi se u sazviježđu Perzej. Read back on the logs to see how much progress you have made through the months, the problems you overcame, and the notes taken to improve in the future. NGC 869 and NGC 884 both lie at a distance of 7500 light years. We imaged the Double Cluster with our Orion 8" Astrograph and ZWO ASI 1600MM Astrophotography camera. The two star clusters making up the Double Cluster are called NGC 869 (h Persei) and NGC 884 (Chi Persei). The Red, Green and Blue filters are only used to grab the colors for the image. Image: Roberto Mura. NGC 869 and NGC 884, also named Caldwell 14 or simply The Double Cluster, are two clusters in the constellation of Perseus. Each cluster has approximately 300 stars. The clusters have a combined visual magnitude of 3.7 and 3.8 and are visible to the naked eye as a fuzzy patch between Perseus and Cassiopeia. Also known as "h and chi Persei", this rare double cluster, shown above, is bright enough to be seen from a dark location without even binoculars. But open clusters NGC 869 and NGC 884 are doubly impressive. With an apparent magnitude of 3.7/3.8, the Double Cluster is visible even without binoculars in good conditions, but best observed with binoculars or small telescopes. The westernmost cluster, NGC 869, appears slightly brighter, richer and more compact than NGC 884. This image shows the Double Cluster in the constellation of Perseus. This is also one of the easiest objects to image for beginner astrophotographers for the Winter months of November, December, January and February. We imaged the Double Cluster after spending three hours on the Bubble Nebula (NGC 7635). Starlight Express MX-916 on 3.5" Questar. Estimated age: 13 million years Apparent size: 60′ NGC 869. We had no choice but to image this target unguided. Estimated age: 12.5 million years Return to Thumbnails At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. The Double Cluster, is NGC 884 and NGC 869, a group of two open star clusters in the Perseus constellation.It has many blue and red stars. With an apparent size of 30' and magnitudes of 3.7 and 3.8 respectively, NGC 869 and NGC 884 are bright enough to be spotted with the naked eye. Learning the constellations is difficult. It makes a beautiful sight in a telescope of any size, and is downright stunning in a moderate-sized telescope equipped with a wide-angle eyepiece. Astronomers number its age to a few million years, i.e. Both clusters are located only a few hundred light years apart. 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ngc 884 double cluster

Posted by on December 21, 2020 at 5:21 am

L=R+G+B, R=G=B=96 secs (in 12 sec increments). The clusters are only a few hundred light-years apart; imagine the night sky from a planet orbiting any star nearby! Double Cluster location in Perseus. NGC 869 and NGC 884 lie at a distance of 7,500 light years. Also known as h (NGC 869) and chi (NGC 884) Persei, the two clusters are located at distances of 7600 and 6800 light years, respectively. Both are very similar to each other in size, magnitude, and age. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … The best estimate for the age of NGC 869 is 6.4 million years, while NGC 884 is about 11.5 million years old. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … Represents the jewels from the handle of Perseus’ sword, Total mass of at least 20,000 solar masses. Also known as "h and chi Persei", this rare double cluster, shown above, is bright enough to be seen from a dark location without even binoculars. We decided to switch to this new target because our telescope was reaching the point of needing a Meridian flip and we decided to end it there for the Bubble. The Double Cluster is easily visible to the naked eye even from moderately light-polluted locations. We'd like to one day re-visit this target with a wider telescope, and do our best to frame a third star cluster in the frame: NGC 957. Open clusters NGC 869 and NGC 884, however, are doubly impressive. Привидна величина (магнитуда) објекта NGC 884 износи 6,1. Both NGC 869 and NGC 884 are getting closer to Earth at a rate of 24 miles per second. NGC 869 & NGC 884 - The Double Cluster in Perseus. NGC 869 (left) and NGC 884 make up the Double Cluster in the constellation of Perseus. The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus.Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years. NGC 869, also known h Persei, is on the left, with NGC 884, also designated chi Persei, on the right. It is circumpolar from most northern locations. The Double Cluster in Perseus (NGC 869/884 or Caldwell 14) consists of a pair of naked-eye open star clusters in the constellation Perseus. Also known as h and χ Persei, the Double Cluster (comprising NGC 869 and NGC 884) is a "line of sight" pairing in the constellation in Perseus, though actually they are only a few hundred light years apart. A telescope will reveal an immense number of faint stars, and a brighter center in each object. NGC 869 and NGC 884 lie at a distance of 7,500 light years. Of the dozens of open star clusters scattered across the autumn sky, none is finer through binoculars than NGC 869 and NGC 884, the famous Double Cluster in Perseus. Magnitude 3.7 and 3.8. It was not until much later that the cluster’s true nature was recognized, after the invention of the telescope in the early 17th century. Apparent size: 30′ The best estimate for the age of NGC 869 is 6.4 million years, while NGC 884 is about 11.5 million years old. Double Cluster (h and Chi Persei). This pair of open clusters lie about 7,000 light-years away from Earth. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years. Map: Perseus Double Cluster NGC 884/869 (between Perseus and Cassiopeia) and Andromeda Galaxy M 31 (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com) Find/Identify. NGC 884 is somewhat farther away, at 8,150 light years. The Double Cluster (NGC 884) - posted in Sketching: Started today at 2am to make a crack at a few new targets. M42 was the ultimate goal for the day after sort of seeing it in a spotter scope a week ago, couldnt wait to get the Dob on it, I have a sketch of it, but CN is telling me the file size is too big. We analyze eight sources with strong mid-infrared excesses in the 13 Myrold double cluster h and χ Persei. Mass: 2,800 solar masses The Double Cluster is also referred to separately as NGC 869 and NGC 884. NGC869 and NGC884 --- The Double Cluster August 15, 2002. Designations: Double Cluster, Caldwell 14, NGC 869 and NGC 884, h Persei and χ Persei, Right ascension: 02h 19.1m The Double Cluster, NGC 869 (right) and NGC 884 (left) with north to the top. Declination: +57°08′ NGC 869 is estimated to be 7,000 light years distant. The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. We analyze eight sources with strong mid-infrared excesses in the 13 Myrold double cluster h and χ Persei. They are a beautiful sight when observed through binoculars or instruments and many individual stars can be resolved if using a large telescope. Reviews; Details. View. NGC884 + NGC869 'Double Cluster' Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Oct 14, 2020. NGC 869 (left) and NGC 884 make up the Double Cluster in the constellation of Perseus. Description: The Astrophotographer’s Journal is a portable notebook created for the purpose of recording observations, cataloguing photographs, and writing down the wonderful memories created by this hobby. Double Cluster NGC 869 and NGC 884. Declination: +57°08′ Charles Messier did not include the cluster in his catalogue, but it is listed in the Caldwell catalogue of deep sky objects not included in the Messier catalogue. Just as the pioneers of astronomy did in their time, look up and take notes of your observations as you are the author of this star-filled journey. We did not think it would turn out good so we spent less than half an hour on it. Probably, he used the name "h Persei" for a fainter nearby star. Both are very similar to each other in size, magnitude, and age. First Light Guides #10 and #11 are a combined guide, as both NGC 869 and NGC 884 would be wonderful objects to observe on their own. Mass: >20,000 solar masses Magnitudes are given without a decimal point, e.g. Open clusters NGC 884 and NGC 869 form the Double Cluster in … August 16, 2020. View. godine. This is Part of the Double Cluster imaged during the moon phase so not the best conditions. NGC 869 and NGC 884 - The Double Cluster - Open Clusters NGC 869 and NGC 884 are two bright open clusters in the constellation of Perseus, that are separated by only half a degree of apparent sky. Even under moderately dark skies, the double cluster in the constellation of Perseus is easily seen with the naked eye. This was taken on September 4, 2011 at the usual location - Cheveresul Mare, near Timisoara. The clusters are dominated by bright blue stars and, speckled with a few fine orange stars, make a spectacular sight in the night sky, especially through binoculars. The Double Cluster (h and Chi Persei; NGC 869 and NGC 884) consists of two young open clusters that lie close together in the sky in Perseus and are visible to the naked eye on a clear, dark night as a hazy patch of light. Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC … Also known as h Persei and χ Persei (h and Chi Persei), the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old. Email Friend. The famous Double Cluster in the constellation of Perseus consists of the star clusters h and chi Persei, which lie some 7100 and 7400 light-years away from Earth, respectively, and appear very close to each other on the sky. NGC 869, also known h Persei, is on the left, with NGC 884, also known as chi Persei, on the right. Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. NGC 869 is estimated to be 7,000 light years distant. Distance: 7,600 light years (2,300 parsecs) Double cluster in perseus is one of the most spectacular objects in the sky - easily visible with a naked eye even under moderate conditions (at it's combined magnitude of 4.3m). The Double Cluster is a large, bright and easy target to photograph for any amateur astrophotographers. Apparent size: 30′ Astronomers number its age to a few million years, i.e. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. a relatively young cluster. Now known respectively as h and chi Persei, or NGC 884 (to the east, or left, of the image) and NGC 869 (the cluster to the west, or right, of the image), the clusters themselves are separated by only a few hundred light-years and contain stars much younger and hotter than the Sun. Double Cluster (NGC 884 and NGC 869) in Perseus. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. This book contains more than 200 pages to memorialize your stargazing and imaging sessions, as well as a useful chart on the last pages to index exciting or important notes. NGC 869 and NGC 884 can be found 7,500 light-years away in the constellation Perseus. Written By Jason Matter. A pair of star clusters, collectively known as the Double Cluster, shines from the constellation Perseus. Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC 869. Both can be seen with the unaided eye and are usually easy to find if you are observing from a dark location. The star 7Per . Thankfully, we did not plan to take exposures longer than 30 seconds anyway as this is what we usually do for star clusters. Constellation: Perseus The cluster lies near the radiant of the Perseid meteor shower, which peaks annually in mid-August. NGC 869 & NGC 884 (LRGB), with the ASI 1600MM, Filters: L (10 minutes) / R (5 minutes) / G (5 minutes) / B (5 minutes). The clusters are about 7,500 light-years from us. There are no faint gases to show off, and no spiral arms to enhance. NGC 869 has a mass of 3700 solar masses and NGC 884 weighs in at 2800 solar masses; however, later research has shown both clusters are surrounded with a very extensive halo of stars, with a total mass for the complex of at least 20,000 solar masses. Both clusters are blueshifted: NGC 869 is approaching us at a speed of 39 km/s, while NGC 884 is moving in Earth’s direction at 38 km/s. NGC 884 је расејано звездано јато у сазвежђу Персеј које се налази на NGC листи објеката дубоког неба.. Деклинација објекта је + 57° 7' 48" а ректасцензија 2h 22m 5,0s. The Double Cluster (also known as Caldwell 14) is the common name for the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Both are visible with the naked eye. Make sure to follow us on Facebook, Instagram, and YouTube to stay up to date with our work! I may make this a mosaic and capture the other half to complete it. The star 7Per . The western component of the pair, h Persei, entry 689 in the New General Catalogue (NGC 689), is about 5.6 million years old, while Chi Persei (NGC 884) is closer to 3.6 million years old. Mass: 3,700 solar masses Each of the clusters contain more than 300 blue/white super-giant stars, many of which are visible in photographs. Looking at the double cluster through binoculars is a beautiful sight, with both clusters of stars looking like two worlds dancing together. Individually, the clusters have a mass of 3,700 solar masses (NGC 869) and 2,800 solar masses (NGC 884), but as each cluster is surrounded by an extended halo of stars, the total mass of the Double Cluster is at least 20,000 solar masses. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … In comparison, the Pleiades cluster (Messier 45) has an estimated age between 75 and 150 million years. The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. The clusters have a combined visual magnitude of 3.7 and 3.8 and are visible to the naked eye as a fuzzy patch between Perseus and Cassiopeia. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus.It is the easternmost of the Double Cluster with NGC 869.NGC 869 and 884 are often designated h and χ Persei, respectively. Image: Genuson at wikipedia.org. The two clusters are separated by only hundreds of light years. The smaller open cluster is similar in age and distance from Earth to its larger neighbour and possibly shares the same origin. This pair of open clusters lie about 7,000 light-years away from Earth. The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Print. Double Cluster NGC 869 and NGC 884. Bortle 6 skies, T-4, S-3. 10 f/4.7 dob. We show that the material with T~300-400 K andLd/L*~10-4 to 10-3 producesthe excesses in these sources. The Double Cluster (also known as Caldwell 14) is the common name for the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. The Double Cluster in Perseus (NGC 869 and NGC 884) are two open clusters in the constellation Perseus. The cluster is most likely around 12.5 million years old. Apparent magnitude: +3.7 NGC869 and NGC884 --- The Double Cluster August 15, 2002. Although their discovery surely predates written history, the Greek astronomer Hipparchus notably cataloged the "double cluster". The clusters are relatively young at 5.6 and 3.2 million years old respectively. View full resolution image. NGC 869 & NGC 884 - The Double Cluster in Perseus, We imaged the Double Cluster after spending three hours on the. Mosaic of 3 LRGB images. For those used to a narrow field of view, click here. They are both part of the so-called Perseus OB1 association, an assembly of extremely massive stars. NGC 869 & NGC 884 The Double Cluster LRGB Post by Astrovetteman » Thu Nov 07, 2019 12:23 am Here's a quick shot that I took last night of the Double Cluster. In mythology, the Double Cluster represents the jewelled handle of Perseus’ sword, given to the hero by the gods, along with a shield and a helmet, to help him in his challenges. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus. The Luminance filter was used for longer than the other three as this is where almost all the details come from. If the Double Cluster were as close to us as the Pleiades (444 light years), it would occupy a quarter of the northern sky and contain some of the brightest stars visible from Earth. I also added 5 dark frames in the process to reduce the … Ptolemy listed the cluster as of the seven “nebulosities” in his Almagest. They're especially bright because they are quite young, so they still contain some especially vigorous young stars. Prvo otkriće je napravio Hipparchus-130. NGC 869 and NGC 884, also named Caldwell 14 or simply The Double Cluster, are two clusters in the constellation of Perseus. Easy to spot in the northern winter sky between the constellations of Perseus and Cassiopeia, the Double Cluster is a favourite of amateur astronomers. NGC 869 and 884 are often designated h and χ Persei, respectively. 7500 light years. The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. The Constellations Handbook is not just another guide listing all the constellations from A to Z and their location, it is the perfect companion for stargazing, and a learning journey through the ages. Each cluster contains more than 300 blue-white supergiants and their hottest stars on the main sequence belong to the spectral class B0. NGC 869 and NGC 884 both lie at a distance of 7500 light years. These open clusters formed relatively recently in astronomical terms and move together through space, approaching us at a speed of roughly 80 000 kilometres per hour. The Double Cluster occupies a total area of 60 arc minutes of apparent sky, which is twice the size of a full Moon. The only tricky part about processing the Double Cluster is when making a Star mask. Right ascension: 2h 20m At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. The Double Cluster in Perseus is a beauty and fits perfectly in the 1.4° true field of view provided by my 32 mm plössl. These two are among the youngest star clusters known. Although we wish to have spent more time on it, and of course used guiding, we are glad the image turned out as great as it did. The Double Cluster (Caldwell 14) is the common name for the naked-eye open clusters NGC884 and NGC869 (often designated Chi Persei and H Persei, respectively), which are close together in the constellation Perseus. Brunier. Normal Inverted monochrome Large size Full size User. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. We imaged the Double Cluster in Perseus with 4 filters: As with most of our images, we like to show you the stacked image for each individual filter, sadly, these files are lost for this particular target. Sljedeći spisak sadrži deset najbližih NGC/IC objekata. Image: ESO/S. They are both located at a distance of 7000 light-years, and are very young for star clusters, NGC 869 being 5.6 million years old, and NGC 884 being 3.2 million years old. NGC 884 Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories? Double cluster • Chi Per • OCL 353 [2] [3] Karta; Portal Astronomija: NGC 884 je otvoreno zvjezdano jato i nalazi se u sazviježđu Perzej. Read back on the logs to see how much progress you have made through the months, the problems you overcame, and the notes taken to improve in the future. NGC 869 and NGC 884 both lie at a distance of 7500 light years. We imaged the Double Cluster with our Orion 8" Astrograph and ZWO ASI 1600MM Astrophotography camera. The two star clusters making up the Double Cluster are called NGC 869 (h Persei) and NGC 884 (Chi Persei). The Red, Green and Blue filters are only used to grab the colors for the image. Image: Roberto Mura. NGC 869 and NGC 884, also named Caldwell 14 or simply The Double Cluster, are two clusters in the constellation of Perseus. Each cluster has approximately 300 stars. The clusters have a combined visual magnitude of 3.7 and 3.8 and are visible to the naked eye as a fuzzy patch between Perseus and Cassiopeia. Also known as "h and chi Persei", this rare double cluster, shown above, is bright enough to be seen from a dark location without even binoculars. But open clusters NGC 869 and NGC 884 are doubly impressive. With an apparent magnitude of 3.7/3.8, the Double Cluster is visible even without binoculars in good conditions, but best observed with binoculars or small telescopes. The westernmost cluster, NGC 869, appears slightly brighter, richer and more compact than NGC 884. This image shows the Double Cluster in the constellation of Perseus. This is also one of the easiest objects to image for beginner astrophotographers for the Winter months of November, December, January and February. We imaged the Double Cluster after spending three hours on the Bubble Nebula (NGC 7635). Starlight Express MX-916 on 3.5" Questar. Estimated age: 13 million years Apparent size: 60′ NGC 869. We had no choice but to image this target unguided. Estimated age: 12.5 million years Return to Thumbnails At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. The Double Cluster, is NGC 884 and NGC 869, a group of two open star clusters in the Perseus constellation.It has many blue and red stars. With an apparent size of 30' and magnitudes of 3.7 and 3.8 respectively, NGC 869 and NGC 884 are bright enough to be spotted with the naked eye. Learning the constellations is difficult. It makes a beautiful sight in a telescope of any size, and is downright stunning in a moderate-sized telescope equipped with a wide-angle eyepiece. Astronomers number its age to a few million years, i.e. Both clusters are located only a few hundred light years apart. Find: During my "winter observations" in February 2017, I tried to find the double cluster NGC 884/869 in Perseus. a relatively young cluster. L=R+G+B, R=G=B=96 secs (in 12 sec increments). 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During the Moon phase so not the best estimate for the age of 869! Image is a result of 6 frames at 105s ngc 884 double cluster each, processed in DeepSky Stacker exposures than... With T~300-400 K andLd/L * ~10-4 to 10-3 producesthe excesses in the constellation Perseus 105s exposure each, in! Skies, the clusters are about 7,500 light-years away from Earth to its larger and... Of 7500 light years apart hundred light-years apart ; imagine the night and to!

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