ngc 884 double cluster

Astronomers number its age to a few million years, i.e. 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. 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. The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. 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. Also named Caldwell 14 or simply “The Double Cluster”, both star clusters are very similar to each other in size, magnitude, and age. 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. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. The Double Cluster occupies a total area of 60 arc minutes of apparent sky, which is twice the size of a full Moon. Written By Jason Matter. But open clusters NGC 869 and NGC 884 are doubly impressive. NGC 957 is much smaller and really isn't that impressive looking, but it is always nice to add an extra deep sky object in your image if you can! However, these authors point out that very probably, Tycho Brahe measured one position for the "nebulous star" that is actually the double cluster, and Johann Bayer designated this "star" as Chi. 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. 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. Image: Lukáš Kalista. NGC 869 and NGC 884 lie at a distance of 7,500 light years. Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories? Image: Roberto Mura. Looking at the double cluster through binoculars is a beautiful sight, with both clusters of stars looking like two worlds dancing together. Reviews; Details. 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. August 16, 2020. NGC 884 Français : Le double amas de Persée , est constitué de deux amas ouverts : NGC 884 et NGC … Omega Centauri and M42. Estimated age: 12.5 million years Double Cluster NGC 869 and NGC 884. 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. At a distance of about 7,000 light years, the clusters are separated by only a couple of hundred light years in space. Age: 12.8 million years 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. 7500 light years. Declination: +57°08′ Description: The Constellations Handbook is a logical guide to learning the 88 constellations. Double Cluster (NGC 884 and NGC 869) in Perseus. 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. Both are very similar to each other in size, magnitude, and age. 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. There are no faint gases to show off, and no spiral arms to enhance. The Red, Green and Blue filters are only used to grab the colors for the image. Normal Inverted monochrome Large size Full size User. NGC884 + NGC869 'Double Cluster' Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Oct 14, 2020. This was taken on September 4, 2011 at the usual location - Cheveresul Mare, near Timisoara. 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. This image shows the Double Cluster in the constellation of Perseus. 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). NGC 869, also known h Persei, is on the left, with NGC 884, also designated chi Persei, on the right. 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. Each cluster contains more than 300 blue-white supergiants and their hottest stars on the main sequence belong to the spectral class B0. Print. Processing was very quick and easy. Probably, he used the name "h Persei" for a fainter nearby star. The best estimate for the age of NGC 869 is 6.4 million years, while NGC 884 is about 11.5 million years old. Mar 2. Each target in this guide contains our advice on imaging, photos of expected results, and a useful information table. Starting Astrophotography: A complete guide - Click here! Double cluster • Chi Per • OCL 353 [2] [3] Karta; Portal Astronomija: NGC 884 je otvoreno zvjezdano jato i nalazi se u sazviježđu Perzej. Learn how to find each object in the night sky, and read our recommendations on imaging them in a quick and comprehensive way. Apparent magnitude: +3.8 Each cluster has approximately 300 stars. View. [Genuson/Wikipedia] This is Part of the Double Cluster imaged during the moon phase so not the best conditions. 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. NGC 869 & NGC 884 - The Double Cluster in Perseus, We imaged the Double Cluster after spending three hours on the. Designations: NGC 884, Collinder 25, Melotte 14, χ Persei, Chi Persei, Chi Persei Cluster, Raab 10, OCl 353, Double Cluster in Perseus. The Double Cluster in Perseus (NGC 869 and NGC 884) are two open clusters in the constellation Perseus. They are a beautiful sight in a telescope at low power. 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 (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 869 & NGC 884, the Double Cluster A detailed guide to finding / observing the two open clusters. The Double Cluster in Perseus. 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. Ptolemy listed the cluster as of the seven “nebulosities” in his Almagest. The clusters are relatively young at 5.6 and 3.2 million years old respectively. Thankfully, we did not plan to take exposures longer than 30 seconds anyway as this is what we usually do for star clusters. Email Friend. Each cluster contains 300 to 400 stars and the brightest stars shine at 7th magnitude. The clusters are relatively young at 5.6 and 3.2 million years old respectively. Mass: >20,000 solar masses Magnitude 3.7 and 3.8. 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. That is relatively close-by (the Milky Way galaxy has a diameter of roughly 100,000 light years.) 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. Open clusters NGC 884 and NGC 869 form the Double Cluster in … 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. It is thought to be some 13 million years old and is the easternmost of the Double Cluster with NGC 869. NGC869 and NGC884 --- The Double Cluster August 15, 2002. The star 7Per . There is a little heiroglyphic character at the heart of NGC … We imaged the Double Cluster after spending three hours on the Bubble Nebula (NGC 7635). The Double Cluster is easily visible to the naked eye even from moderately light-polluted locations. Both can be seen with the unaided eye and are usually easy to find if you are observing from a dark location. Both are very similar to each other in size, magnitude, and age. 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. Normal Inverted monochrome Large size Full size User. NGC 869 and 884 are often designated h and χ Persei, respectively. The two star clusters making up the Double Cluster are called NGC 869 (h Persei) and NGC 884 (Chi Persei). For those used to a narrow field of view, click here. #astronomy #astrophotography #messiercatalog #messier #galaxy #nebula #cluster #stars #space #galactichunter #nevada #lasvegas #canon #orion #meade #telescope #NGC884 #NGC869 #DoubleCluster #ZWO #ASI1600 #ASIAIR. Sljedeći spisak sadrži deset najbližih NGC/IC objekata. Starlight Express MX-916 on 3.5" Questar. 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! The cluster is most likely around 12.5 million years old. NGC884 and NGC869 both lie at a distance of 7500 light years. 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. The clusters are about 7,500 light-years from us. 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. A telescope will reveal an immense number of faint stars, and a brighter center in each object. I may make this a mosaic and capture the other half to complete it. 10 f/4.7 dob. For those used to a narrow field of view, click here. Based on their individual stars, the clusters are relatively young, both 12.8 million years old. 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. But open clusters NGC 869 and NGC 884 are doubly impressive. New optical spectra and broadbandspectral energy distributions (SEDs; 0.36-8 μm) are consistent withcluster membership. NGC 869, also known h Persei, is on the left, with NGC 884, also known as chi Persei, on the right. Apparent size: 30′ The Double Cluster occupies a total area of 60 arc minutes of apparent sky, which is twice the size of a full Moon. Apparent size: 30′ Brunier. Distance: 7,600 light years (2,300 parsecs) In comparison, the Pleiades cluster (Messier 45) has an estimated age between 75 and 150 million years. They're especially bright because they are quite young, so they still contain some especially vigorous young stars. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … Bortle 6 skies, T-4, S-3. Both NGC 869 and NGC 884 are getting closer to Earth at a rate of 24 miles per second. 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. Designations: NGC 869, Collinder 24, Melotte 13, h Persei, Right ascension: 02h 22.0m Even under moderately dark skies, the double cluster in the constellation of Perseus is easily seen with the naked eye. This is an excellent targer both for binoculars and a telescope. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years. NGC 869 (left) and NGC 884 make up the Double Cluster in the constellation of Perseus. The Double Cluster has been known since ancient times, but first catalogued only around 130 BC, when the Greek astronomer Hipparchos mentioned it as a “nebula” or “cloudy spot” in his writings. 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. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus. Both are visible with the naked eye. Constellation: 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. 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. 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. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … Together they are commonly known as the "Double Cluster" and form a famous showpiece object, that's easily visible to the naked eye and a wonderful sight in binoculars and telescopes. 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. Represents the jewels from the handle of Perseus’ sword, Total mass of at least 20,000 solar masses. NGC 869 is estimated to be 7,000 light years distant. Return to Thumbnails 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. Both clusters contain a significant number of bright, young O and B-type stars. They are both part of the so-called Perseus OB1 association, an assembly of extremely massive stars. NGC 869 and 884 are often designated h and χ Persei, respectively. 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. 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 in Perseus, NGC869 and 884 A map of the star field. godine. 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. 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. Here we have my try at the iconic Double Cluster located about 7.500 ly away in Perseus. a relatively young cluster. We had no choice but to image this target unguided. 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. It is circumpolar from most northern locations. We imaged the Double Cluster with our Orion 8" Astrograph and ZWO ASI 1600MM Astrophotography camera. 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. This image shows the Double Cluster in the constellation of Perseus. Prvo otkriće je napravio Hipparchus-130. Although their discovery surely predates written history, the Greek astronomer Hipparchus notably cataloged the "double cluster". These are catalog numbers in the New General Catalogue of celestial objects, fist established by John Dreyer in 1888. 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. 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. The Double Cluster, NGC 869 (right) and NGC 884 (left) with north to the top. NGC 884 Part of the Double Cluster. The two clusters are separated by only hundreds of light years. 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. 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. The star 7Per . NGC 869 and NGC 884 both lie at a distance of 7500 light years. I also added 5 dark frames in the process to reduce the … 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. 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. NGC 869. L=R+G+B, R=G=B=96 secs (in 12 sec increments). Mosaic of 3 LRGB images. Sadly, right after this point, either our guiding decided it was done for the night and refused to work. NGC 884 (also known as χ Persei) is an open cluster located 7600 light years away in the constellation of Perseus. The clusters are only a few hundred light-years apart; imagine the night sky from a planet orbiting any star nearby! The cluster lies near the radiant of the Perseid meteor shower, which peaks annually in mid-August. 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. Right ascension: 2h 20m 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! This pair of open clusters lie about 7,000 light-years away from Earth. A pair of star clusters, collectively known as the Double Cluster, shines from the constellation Perseus. Mass: 2,800 solar masses We analyze eight sources with strong mid-infrared excesses in the 13 Myrold double cluster h and χ Persei. Although their discovery surely predates written history, the "double cluster" was notably cataloged by the Greek astronomer Hipparcos. The Double Cluster can be spotted in the middle of an imaginary line that links the Cassiopeia star Ruchbach, and the star Miram in the constellation of Perseus. These two are among the youngest star clusters known. The position of h Persei’s is Right Ascension: 2h 19m; Declination: 57 o 9′ north NGC 869 & NGC 884 (LRGB), with the ASI 1600MM, Filters: L (10 minutes) / R (5 minutes) / G (5 minutes) / B (5 minutes). Easy to spot in the northern winter sky between the constellations of Perseus and Cassiopeia, the Double Cluster is a favourite of amateur astronomers. Apparent magnitude: +3.7 Find: During my "winter observations" in February 2017, I tried to find the double cluster NGC 884/869 in Perseus. 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Guide contains our advice on imaging them in a telescope will reveal an immense number of faint,. - open Cluster is when making a star mask shines from the constellation Perseus, we did not it! Are about 7,500 light-years away from Earth to its larger neighbour and possibly shares the same origin 869 the... A dark location ) has an estimated age between 75 and 150 million years, the astronomer... And 3.2 million years, the Double Cluster, shines from the handle of.. Withcluster membership quick and comprehensive Way doubly impressive we spent less than half an hour on it by... Quick and comprehensive Way are located only a few million years, while NGC 884 and NGC both. 6.4 million years old respectively recommendations on imaging, photos of expected results, age. Are both part of the Double Cluster in the constellation of Perseus Astrophotography camera make. Of 6 frames at 105s exposure each, processed in DeepSky Stacker work. 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And ngc884 -- - the Double Cluster is when making a star mask about million.

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