ngc 884 double cluster

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. Apparent magnitude: +3.7 We've also included a few cool facts about each target, a map to find it in the night sky, and more! Each cluster contains 300 to 400 stars and the brightest stars shine at 7th magnitude. 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. 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. Designations: NGC 884, Collinder 25, Melotte 14, χ Persei, Chi Persei, Chi Persei Cluster, Raab 10, OCl 353, Double Cluster in Perseus. English: The double cluster, in the constellation Perseus, is constituted of two open clusters: NGC 884 and NGC 869. 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. 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. 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. Image: Rawastrodata (Nikon D300 camera on an 8″ Newtonian reflector). 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. NGC 869, also known h Persei, is on the left, with NGC 884, also designated chi Persei, on the right. The clusters were likely formed in the same star forming cloud in the Perseus Arm of the Milky Way and both belong to the Perseus OB1 association, a group of extremely massive stars. Also named Caldwell 14 or simply “The Double Cluster”, both star clusters are very similar to each other in size, magnitude, and age. View. Astronomers number its age to a few million years, i.e. 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. Written By Jason Matter. The Double Cluster is a large, bright and easy target to photograph for any amateur astrophotographers. Double Cluster location in Perseus. Also known as h Persei and χ Persei, the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old. It is thought to be some 13 million years old and is the easternmost of the Double Cluster with NGC 869. NGC 869 & NGC 884, the Double Cluster A detailed guide to finding / observing the two open clusters. 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. 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. 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. NGC 884 is somewhat farther away, at 8,150 light years. German-British astronomer William Herschel was the first to recognize that the object in fact consisted of two separate clusters. English: The double cluster, in the constellation Perseus, is constituted of two open clusters: NGC 884 and NGC 869. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … View full resolution image. 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. 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 (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. NGC 884 Estimated age: 13 million years The clusters are about 7,500 light-years from us. Double Cluster NGC 869 and NGC 884. Prvo otkriće je napravio Hipparchus-130. Thankfully, we did not plan to take exposures longer than 30 seconds anyway as this is what we usually do for star clusters. 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. Both NGC 869 and NGC 884 are getting closer to Earth at a rate of 24 miles per second. Reviews; Details. [Genuson/Wikipedia] NGC 869, also known h Persei, is on the left, with NGC 884, also known as chi Persei, on the right. The star 7Per . 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). Description: Discover 60 Deep Sky Objects that will considerably improve your Imaging and Processing skills! 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. Learning the constellations is difficult. Even under moderately dark skies, the double cluster in the constellation of Perseus is easily seen with the naked eye. The best estimate for the age of NGC 869 is 6.4 million years, while NGC 884 is about 11.5 million years old. NGC884 + NGC869 'Double Cluster' Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Oct 14, 2020. Here we have my try at the iconic Double Cluster located about 7.500 ly away in Perseus. A pair of star clusters, collectively known as the Double Cluster, shines from the constellation Perseus. The smaller open cluster is similar in age and distance from Earth to its larger neighbour and possibly shares the same origin. 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. This was taken on September 4, 2011 at the usual location - Cheveresul Mare, near Timisoara. At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. 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. The cluster is most likely around 12.5 million years old. Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC 869. These two are among the youngest star clusters known. Also known as "h and chi Persei", this unusual double cluster, shown above, is bright enough to be seen from a dark location without even binoculars. Starlight Express MX-916 on 3.5" Questar. Each of the clusters contain more than 300 blue/white super-giant stars, many of which are visible in photographs. 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. These two are among the youngest star clusters known. Right ascension: 2h 20m We show that the material with T~300-400 K andLd/L*~10-4 to 10-3 producesthe excesses in these sources. NGC 869 (left) and NGC 884 make up the Double Cluster in the constellation of Perseus. Return to Thumbnails Both NGC 869 and NGC 884 are getting closer to Earth at a rate of 24 miles per second. Both are very similar to each other in size, magnitude, and age. The Double Cluster is easily visible to the naked eye even from moderately light-polluted locations. Distance: 7,600 light years (2,300 parsecs) Both are very similar to each other in size, magnitude, and age. 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. But open clusters NGC 869 and NGC 884 are doubly impressive. NGC 884 Object Type: Open cluster Constellation: Perseus Magnitude: 4.4 Size: 30' The Double Cluster is easily visible to the naked eye even from moderately light-polluted locations. The cluster lies near the radiant of the Perseid meteor shower, which peaks annually in mid-August. The best estimate for the age of NGC 869 is 6.4 million years, while NGC 884 is about 11.5 million years old. Apparent size: 30′ Also known as h Persei and χ Persei, the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old. 67 is to be interpreted as magnitude 6.7. 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. The Double Cluster in Perseus (NGC 869 and NGC 884) are two open clusters in the constellation Perseus. Processing wise I have not really done much just stretched it and a bit of noise reduction and that's it a nice easy one. 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. 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. Probably, he used the name "h Persei" for a fainter nearby star. Sadly, right after this point, either our guiding decided it was done for the night and refused to work. NGC 869 is estimated to be 7,000 light years distant. The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. 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. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … a relatively young cluster. NGC 869 is estimated to be 7,000 light years distant. Both can be seen with the unaided eye and are usually easy to find if you are observing from a dark location. This is an excellent targer both for binoculars and a telescope. 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. Image: ESO/S. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. 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. 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. The Double Cluster occupies a total area of 60 arc minutes of apparent sky, which is twice the size of a full Moon. Mosaic of 3 LRGB images. Distance: 7,600 light years (2,300 parsecs) Designations: NGC 869, Collinder 24, Melotte 13, h Persei, Right ascension: 02h 22.0m This book groups the constellations in a logical order, so that the reader can easily learn them by their origin, and see how their stories interact with one another as a group. 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. Age: 12.8 million years Declination: +57°08′ Description: The Constellations Handbook is a logical guide to learning the 88 constellations. 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. NGC 869 and NGC 884, also named Caldwell 14 or simply The Double Cluster, are two clusters in the constellation of Perseus. NGC 884 Part of the Double Cluster. a relatively young cluster. NGC869 and NGC884 --- The Double Cluster August 15, 2002. The Luminance filter was used for longer than the other three as this is where almost all the details come from. The position of h Persei’s is Right Ascension: 2h 19m; Declination: 57 o 9′ north 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 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. The Double Cluster in Perseus is a beauty and fits perfectly in the 1.4Â° true field of view provided by my 32 mm plÃ¶ssl. Each target in this guide contains our advice on imaging, photos of expected results, and a useful information table. 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. Looking at the double cluster through binoculars is a beautiful sight, with both clusters of stars looking like two worlds dancing together. Keep an eye out for a Version 2 of our Double Cluster with either a wider telescope or the same instrument but guided and with am expected total exposure time of 2 to 3 hours. Each cluster contains more than 300 blue-white supergiants and their hottest stars on the main sequence belong to the spectral class B0. 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 named Caldwell 14 or simply “The Double Cluster”, both star clusters are very similar to each other in size, magnitude, and age. Remembering them is even harder. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years. This is also one of the easiest objects to image for beginner astrophotographers for the Winter months of November, December, January and February. The final image is a result of 6 frames at 105s exposure each, processed in DeepSky Stacker. 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. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. Double Cluster NGC 869 and NGC 884. For those used to a narrow field of view, click here. 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. Email Friend. That is relatively close-by (the Milky Way galaxy has a diameter of roughly 100,000 light years.) 10 f/4.7 dob. Open clusters NGC 869 and NGC 884, however, are doubly impressive. 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. NGC869 and NGC884 --- The Double Cluster August 15, 2002. The Double Cluster, NGC 869 (right) and NGC 884 (left) with north to the top. 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. Although their discovery surely predates written history, the Greek astronomer Hipparchus notably cataloged the "double cluster". 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 (left) and NGC 884 make up the Double Cluster in the constellation of Perseus. NGC 884 (Chi Persei Cluster) - Open Cluster. Based on their individual stars, the clusters are relatively young, both 12.8 million years old. Mar 2. NGC 869 and NGC 884 lie at a distance of 7,500 light years. Declination: +57°08′ The Red, Green and Blue filters are only used to grab the colors for the image. The Double Cluster in Perseus, NGC869 and 884 A map of the star field. Whether you are a beginner, intermediate, or advanced astrophotographer, this detailed book of the best deep sky objects will serve as a personal guide for years to come! We imaged the Double Cluster with our Orion 8" Astrograph and ZWO ASI 1600MM Astrophotography camera. Ptolemy listed the cluster as of the seven “nebulosities” in his Almagest. But open clusters NGC 869 and NGC 884 are doubly impressive. These clusters are relatively young and do contain several red super giants which I think really add to the visual appeal of this one. Each cluster has approximately 300 stars. Normal Inverted monochrome Large size Full size User. L=R+G+B, R=G=B=96 secs (in 12 sec increments). In comparison, the Pleiades cluster (Messier 45) has an estimated age between 75 and 150 million years. I may make this a mosaic and capture the other half to complete it. Both clusters contain a significant number of bright, young O and B-type stars. We kind of wish we kept going though as the image below is just 25 minutes of total exposure and doesn't look too bad! 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. 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. NGC 869 & NGC 884 - The Double Cluster in Perseus, We imaged the Double Cluster after spending three hours on the. Estimated age: 12.5 million years The clusters are relatively young at 5.6 and 3.2 million years old respectively. L=R+G+B, R=G=B=96 secs (in 12 sec increments). They are a beautiful sight in a telescope at low power. 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. It is circumpolar from most northern locations. Magnitude 3.7 and 3.8. Print. #astronomy #astrophotography #messiercatalog #messier #galaxy #nebula #cluster #stars #space #galactichunter #nevada #lasvegas #canon #orion #meade #telescope #NGC884 #NGC869 #DoubleCluster #ZWO #ASI1600 #ASIAIR. NGC 869 and NGC 884 both lie at a distance of 7500 light years. The Double Cluster (NGC 869 and NGC 884) in Perseus. 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. It is the easternmost of the Double Cluster with NGC 869. Привидна величина (магнитуда) објекта NGC 884 износи 6,1. They are a beautiful sight when observed through binoculars or instruments and many individual stars can be resolved if using a large telescope. You want to make sure that you play with the settings and run some tests until the stars on the mask are either only background stars or cluster stars, not both. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. They're especially bright because they are quite young, so they still contain some especially vigorous young stars. 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. The Double Cluster in Perseus (NGC 869 and NGC 884) are two open clusters in the constellation Perseus. We did not think it would turn out good so we spent less than half an hour on it. The Double Cluster is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. These are catalog numbers in the New General Catalogue of celestial objects, fist established by John Dreyer in 1888. This pair of open clusters lie about 7,000 light-years away from Earth. We analyze eight sources with strong mid-infrared excesses in the 13 Myrold double cluster h and χ Persei. Designations: Double Cluster, Caldwell 14, NGC 869 and NGC 884, h Persei and χ Persei, Right ascension: 02h 19.1m Mass: 3,700 solar masses Brunier. Image: Lukáš Kalista. This image shows the Double Cluster in the constellation of Perseus. It is easy to find in the sky because it lies just to the east of the familiar W shape of Cassiopeia constellation, between the stars Ruchbah (Delta Cassiopeiae) in Cassiopeia and Miram (Eta Persei), which marks the pointed top of Perseus. Bortle 6 skies, T-4, S-3. Declination: +57°09′ Easy to spot in the northern winter sky between the constellations of Perseus and Cassiopeia, the Double Cluster is a favourite of amateur astronomers. And comprehensive Way Perseus constellation sadly, right after this point, our! 7,500 light years away in the constellation of Perseus imaged the Double Cluster Perseus... ' started by ROBERT T SCHAEFER JR, Oct 14, 2020 Myrold Double (... Supergiants and their hottest stars on the with T~300-400 K andLd/L * ~10-4 to 10-3 producesthe in. Be seen with the naked eye `` winter observations '' in February 2017, I to. 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Magnitude, and a brighter center in each object in fact consisted of two separate clusters, bright easy! Can be found 7,500 light-years away from Earth 14 or simply the Double Cluster with NGC.! Separately as NGC 884 are doubly impressive, however, are two clusters in the constellation Perseus `` winter ''...

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