Gamma Cassiopeia Region Emission and reflection nebulas located in Cassiopeia. Gamma Cassiopeiae Nebula (IC63) « del : Sáb, 16-Nov-2019, UTC 22h.30m. With a declination of +60° 43’, the star is visible from all locations north of the equator, but cannot be seen south of the latitude 29° S. Observers in southern latitudes where the star rises can only see it appear low above the horizon at certain times of year. It has a wide (mag. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 63, sometimes nicknamed the Ghost Nebula, that lies several light years away from the star. Gamma Cassiopeiae Nebula (IC63) DSOs. Während beim etwas helleren Nebel IC 63 der rötliche Emissionsanteil überwiegt, dominieren beim blasseren IC 59 die bläulichen Reflexionsanteile. Best Solar 2018. 2.24), Caph (Beta Cas, mag. Gamma Cassiopeiae is classified as a Be star, a non-supergiant blue class B star showing Balmer (hydrogen) emission lines in its spectrum. 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. However the final results would also depend on the quality of skies you use and which should be affected by light polution as little as possible and your processing skils. 3.95), Kappa Cassiopeiae (mag. It allows us to look into the history and take a picture of it. The periods when the disks are particularly strong and the brightness increases are called shell events. Notable deep sky objects in the constellation include the neighbouring Heart and Soul nebulae (IC 1805 and IC 1848), two large emission nebulae 7,500 light years away, the emission nebulae NGC 281 (the Pacman Nebula) and NGC 7635 (the Bubble Nebula), the open clusters Messier 52, Messier 103, NGC 457 (the E.T. It will be lost to dawn twilight around 06:16, 41° above your north-western horizon. Date: October 2014 Location: Roztoki Gorne, Bieszczady Mountains CCD: Canon 6D (modified) Scope: Takahashi Epsilon 130D @F3.3 Mount: AP600GTO Exposure 5 hours 20 minutes Processing: MaximDL, Photoshop Thanks to astrophotography you can see things not not available to an open eye, a colorfull wonders of the Universe. The bright star Gamma Cas is attended by two large wisps of nebulosity, IC 59 and IC 63. 2020 Equipment: ATIK 460EX with EFW2, Skywatcher f5.5 Esprit 100 ED refractor, Avalon Linear mount, guiding with Lodestar X2/PHD. Gamma Cassiopeiae. The star Gamma Cassiopeiae unleashes the energy of 34,000 Suns, it adds. With a surface temperature of 25,000 K, it is 34,000 times more luminous than the Sun, but most of its output is in the invisible ultraviolet. The star was reported to be a binary with a period of 203.59 days in a study published in 2000. Gamma Cassiopeiae, also known as Navi, is the prototype Gamma Cassiopeiae variable star, a type of star that has a variable disc of material flung off by the high rotation rate of the star. Circumpolar in the northern hemisphere, Cassiopeia has been known to observers since ancient times. IC 59 appears north of the star, while IC 63 is more to the northeast. Emission and reflection nebulas located in Cassiopeia. Guiding telescopes or lenses:Celestron OAG Deluxe, Teleskop Service TSOAG9 Off-Axis Guider. Closer to Caph, the irregular galaxy IC 10 has an apparent magnitude of 10.4 and lies 2.2 million light years from the Sun. Other bright stars that are examples of this include Achernar, Alderamin, Altair, Rasalhague, Regulus, and Vega. The star pattern appears as a W during the northern hemisphere spring and summer. The asterism is part of the Legs mansion, which represents the tail of the White Tiger of the West. The ultraviolet radiation energizes the electrons within the nebula, and the electrons release the energy as hydrogen-alpha emission, which gives the nebula its red glow. Gamma Cassiopeiae is an eruptive variable star. At dusk, it will become visible around 19:33 (PDT), 47° above your north-eastern horizon. Grissom had used the name Navi as a joke on his planning charts for the mission and succeeding Apollo astronauts kept using it as a memorial. What the astrophotography does? Gamma Cassiopeiae Nebula Contains: IC 63 , gamma Cas nebula , IC 59 , The star Navi (γCas) A more advanced amateur astrophotography could require some more sophisticated and expensive equatorial mounts and potentially cooled CCD cameras. Pictures, altitude charts, data sheet and sky map for Gamma Cassiopeiae Nebula - - Bright nebula in Cassiopeia Constellation For more distant galaxies it might be more than 65 million years so you might be looking at an image when dinosaurs still lived on our planet Earth. Gamma Cassiopeiae and other variables of this type are eruptive stars. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 63, sometimes nicknamed the Ghost Nebula, that lies several light years away from … GAMMA CAS (Gamma Cassiopeiae). The nebula is also catalogued as IC 11 and Sharpless 184. IC 59 und IC 63 sind gemischte Emissions-Reflexionsnebel die vom hellen Stern Gamma Cassiopeiae zum Leuchten gebracht werden. Made with 15cm F6.2 newton captured with 350d mod and Astronomic's CLS filter, against light polution exposer 6x400 seconds guide with PHD and … Dies entspricht einer Oberflächentemperatur von circa 6800 K, während ein ungestörter B-Stern eine Oberflächentemperatur von 10.000 bis 25.000 K zeigt. Gamma Cassiopeiae, NGC 225, IC 59, IC 63 and NGC 189, image: Wikisky. Gamma Cassiopeiae itself usually shines at magnitude 2.25, but it has been observed to fade to magnitude 3.0 and brighten to magnitude 1.6. 4.16), and Theta Cassiopeiae (mag. In winter, it appears inverted. It was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy. The star is running out of the supply of hydrogen in its core and is on its way to evolving into a giant. HUBBLE TELESCOPE SPOTS A 'SPACE INVADER' 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. IC59 & IC63: The Gamma Cassiopeiae Nebulae Gamma Cassiopeiae, the middle star of the famous W-shaped constellation, is a hot giant with a surface temperature of 25,000°C (compared to 5,500°C for our Sun) and a mass fifteen times our Sun's. The Cassiopeia constellation gets its name … Vermutlich handelt es sich um ein enges Doppelsternsystem, bestehend aus einem Riesenstern und einem Neutronenstern. With an apparent magnitude that varies from 1.6 to 3.0, it sometimes outshines its neighbours Schedar, Caph and Segin to become the constellation’s brightest star. The emission lines in these stars are believed to come from circumstellar disks of material ejected from the stellar surfaces as a result of rapid rotation. It will continue to be observable until around 04:20, when it sinks below 22° above your north-western horizon. 09.20.2013 at 5:14 am. The entire constellation is visible from locations between the latitudes 90° N and 20° S. The 10 brightest stars in Cassiopeia are Gamma Cassiopeiae (mag. The “e” suffix indicates hydrogen emission lines in the star’s spectrum. save hide report. The only brighter star without a formally approved name is Gamma Velorum (informally known as Regor). Even though it is a very young star, Gamma Cassiopeiae has already left the main sequence and begun its death process. 2.28), Ruchbah (Delta Cas, mag. 5 comments. Cassiopeia constellation, image: Roberto Mura. Complex nebula to capture (only mag. Während beim etwas helleren Nebel IC 63 der rötliche Emissionsanteil überwiegt, dominieren beim blasseren IC 59 die bläulichen Reflexionsanteile. It is the only known starburst galaxy in the Local Group. GAMMA CAS (Gamma Cassiopeiae). 2.84 – 2.92), Pleione in the Pleiades cluster in Taurus (mag. It will become visible around 17:55 (EST) as the dusk sky fades, 54° above your north-eastern horizon. Gamma Cassiopeia Nebula – kaufen Sie dieses Foto und finden Sie ähnliche Bilder auf Adobe Stock The open clusters NGC 189 and NGC 129 appear in the area between Gamma Cassiopeiae and its bright neighbour Caph, the rightmost star of the W asterism. With a physical radius of 48 light years, it stretches across 35’ of the sky and is associated with the open … Complex nebula to capture (only mag. The name Navi (Ivan spelled backwards) was given to it by the American astronaut Virgil Ivan “Gus” Grissom, commander of the Apollo 1 mission, which ended with the deaths of all three crew members during a pre-launch test on January 27, 1967. Informally known as Navi, it is one of the four brightest stars in Cassiopeia. Please take a deep breath and dive in together with me if you have not done it already. 8 Celestron scope. 4.8 – 5.5), Lambda Pavonis in Pavo (mag. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. 4.92 – 5.39) in Canis Major. Gamma Cassiopeiae also has two visual companions, catalogued as components B and C. The first companion is a magnitude 11 star separated by about 2 arcseconds from the primary, and the second is a magnitude 13 star almost an arcsecond away from the primary. Stars classified as Gamma Cassiopeiae variables include Gomeisa in Canis Minor (mag. The binary nature of the star was confirmed in 2011. Gamma Cassiopeiae is informally known as Navi or Tsih. Like other exceptionally massive stars, it has evolved very quickly and will not live a very long life. ISO 1000. It will be highest in the sky at 00:31, 76° above your northern horizon. Jul 12, 2020 - A 9.8 hour exposure of the nebula surrounding the star Gamma Cassiopeiae Equipment: Mount: iOptron CEM60 Telescope: 8" Orion Newtonian Astrograph 800mm f/3.9 Guide scope: Orion CT80 Camera: Modified Canon T5 Guide Camera: Lodestar x2 Accessories: Baader MPCC III, Astronomik CLS-CCD Clip-in Filter Software: APT, PHD2, DSS, PixInstight, Lightroom Mounts:Mesu 200 Mk2, Skywatcher EQ6R Pro. The Gamma Cassiopeiae nebula... IC63 and IC59: Object: IC59, 63 (Sharpless 2-185) Type: Emission and reflection nebulae Constellation: Cassiopeia Distance: 600 light years. Gamma Cassiopeiae forms Cassiopeia’s W asterism with Segin (Epsilon Cassiopeiae), Ruchbah (Delta Cassiopeiae), Schedar (Alpha Cassiopeiae) and Caph (Beta Cassiopeiae). Gamma Cassiopeiae Nebula (IC63) Technical card Imaging telescopes or lenses:Teleskop Service TS Photoline 107mm f/6.5 Super-Apo, Altair Astro RC250-TT 10" RC Truss Tube. Gamma can emit 10 times higher the amounts of X-ray radiation than that of other B class stars. Posted by. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. Schedar (alpha Cassiopeiae - α Cas) - is a magnitude +2.24 orange giant star, located 228 light-years distant. Astronomy is a great adventure into a distant words which rememinds us how small we all are living on our planet Earth and imagine how hugly hudge the entire universe is. The star rotates very rapidly and bulges outward along the equator. A study of the star’s X-ray flux found variations with a period interpreted as the star’s rotational period (1.21 days), indicating that the X-rays did not come from a companion. They have decretion disks around the equatorial region, which sometimes reform or disappear. The X-ray radiation emanating from the star is about 10 times stronger than the radiation detected from other Be or B stars. It has since been gradually brightening back to around +2.2. Gamma Cassiopeiae is an exceptionally fast spinner, with a projected rotational velocity of 432 km/s. Achernar was only recognized as a Be star in 1976. Gamma Cassiopeiae has the stellar classification B0.5 IVe, indicating a subgiant star appearing blue or blue-white in colour. gamma cassiopeia ic59 ic63 Nebulas This entry was posted on Tuesday, January 6th, 2015 at 3:43 pm and is filed under DSO , Nebulas , Wide fields . Its high mass seals its fate as a supernova in the not-too-distant astronomical future. From Redmond , Gamma Cassiopeiae Nebula is visible all night because it is circumpolar.It will be highest in the sky at 00:31, 76° above your northern horizon. The decretion disk causes both brightness variations and hydrogen emission lines in the star’s spectrum. I believe that the information on my page should also give you a view on the equipment which I would recommend or currently use for purouses of the hobby. Typically, they are fast spinning class B subgiants, giants or sometimes main sequence stars, that show brightness variations with larger amplitudes than other Be stars. If they are believed to be pulsating stars, they are classified as Lambda Eridani variables. The 2011 study suggested a circular orbit with a period between 203.0 and 203.6 days and a companion with a mass of 0.98 solar masses. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 63, sometimes nicknamed the Ghost Nebula, that lies several light years away from … 5 months ago. Its brightness has been slowly increasing since to about magnitude 2.2. A picture of our closest galaxy the Great Galaxy in Andromeda presents how it looked 2.3 million years ago as the light needed to travel this amount of time to be registered by a camera! Gamma Cassiopeiae is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia. Guiding … IC 59 / gamma Cas nebula IC 63 / gamma Cas nebula The star γCas —— If you would like to have other images solved, please submit them to the astrometry group. “The Ghost Nebula is part of a much larger nebulous region surrounding Gamma Cassiopeiae that measures approximately two degrees on the sky – … Schedar can be used to find the bright emission nebula NGC 281, popularly known as the Pacman Nebula. It is one of the five stars that form Cassiopeia’s recognizable W asterism. As another effect of the star’s fast rotation, a lot of material from the surface is ejected and forms a hot disk of gas. Find Gamma Cassiopeiae Nebulae stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Schedar and other bright stars of Cassiopeia lie in a rich field of the Milky Way and can be used to find a number of bright deep sky objects. Gamma Cassiopeiae Nebula (IC63) DSOs. Thousands of new, high … This asterism is formed by five bright stars; Epsilon, Ruchbah (Delta), Gamma, Schedar (Alpha Cassiopeiae) and Caph (Beta Cassiopeiae). Since there were no signs of a companion in the spectrum of Gamma Cassiopeiae, the system was adopted as a single-lined spectroscopic binary, that is to say, a system where the spectrum of only one component is seen and the presence of a companion is inferred from spectral lines periodically shifting towards the blue, then towards red and then towards blue again, indicating that the components are moving toward us and away from us, i.e. From Virginia Beach , Gamma Cassiopeiae Nebula is visible all night.It will become visible around 17:55 (EST) as the dusk sky fades, 54° above your north-eastern horizon. Gamma Cassiopeiae, Caph, NGC 129, NGC 189 and IC 10, image: Wikisky. Navi occasionally outshines the brightest star in Cassiopeia – Alpha Cassiopeiae, reaching a magnitude of 1.6, due to its variability in brightness. It will then reach its highest point in the sky at 20:44, 65° above your northern horizon. Gamma Cassiopeiae lies at a distance of 550 light years from Earth. It is one of the 48 Greek constellations, first listed by the Greek astronomer Claudius Ptolemy in the 2nd century CE. Gamma Cas is the middle star of Cassiopeia, a 2nd magnitude star that is the prototype for a class of eruptive variable stars. Gamma Cassiopeiae (γ Cas) is a spectroscopic binary star located in the constellation Cassiopeia. The Sun with its planet system, moons travelling around the planets or our gests - comets visiting us from time to time. Gamma Cassiopeiae has a mass 17 times that of the Sun and, as it ended its main sequence lifetime, it has expanded to a size of 10 solar radii. It has an apparent magnitude of 7.0 and lies at a distance of 2,143 light years. Gamma Cassiopeiae star is a fast-spinning eruptive variable with a BeIII to BeIV spectrum that, at irregular intervals, shows a series of strong, sharp absorption lines accompanied by a fading due the ejection of matter from the equatorial region of the star. High overhead in northern autumn evenings lies the W- shaped constellation Cassiopeia, in mythology the Queen and mother to Andromeda, to us brilliant against the background of the Milky Way and fully circumpolar from most of the United States and all of Canada. 4.00 – 4.26), and Kappa Canis Majoris (mag. Gamma Cassiopeiae is very easy to find. Gamma Cassiopeiae is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia. At dusk, it will become visible around 19:33 (PDT), 47° above your north-eastern horizon. One of the stars in the nebula is Gamma Cassiopeiae - is a blue-white subgiant variable star which shines a staggering 65,000 times brighter than our Sun. Still in the Dark. The variations in brightness are caused by shell episodes, where shell features appear in the star’s spectrum, significantly increasing or decreasing brightness. Like its neighbour Caph, Gamma Cassiopeiae is an example of gravity darkening. Seen from locations south of the equator (where the asterism is visible), it always appears inverted. Looking at the Sun we can see how it looked like cirrca about 8 minutes ago. Gamma Cassiopeiae star. From Redmond , Gamma Cassiopeiae Nebula is visible all night because it is circumpolar. About 550 light-years away in the constellation of Cassiopeia lies IC 63, a stunning and slightly eerie nebula. Cluster), NGC 7789 (the White Rose Cluster), NGC 663, and NGC 654, and the irregular starburst galaxy IC 10, one of our neighbours in the Local Group. Reply . Gamma Cassiopeiae is a prototype for its own class of variable stars known as the Gamma Cassiopeiae variables. 3.37), Achird (Eta Cas, mag. The study suggested that the companion had a mass between 0.7 and 1.9 solar masses and was not responsible for the X-ray emission detected from the star. With an apparent magnitude of 10, they are quite faint. The large open cluster NGC 225 stretches across 12 arcminutes northwest of the star. Please join me with my adventure through a starry night sky. Gamma Cassiopeiae is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia. Despite their almost identical proximity to Gamma Cassiopeia and similar appearance, Sh2-185, or IC 59 (lower) and IC 63 (above and right) are actually quite different in … The emission-reflection nebulae IC 59 and IC 63 lie only 3-4 light years from the star. Nebula IC 63 - aka the "ghost" of the constellation Cassiopeia - is slowly dissipating under the influence of ionizing ultraviolet radiation from a hot, luminous variable star known as Gamma Cas. Bright Star, Double Star. 2.28). Nicknamed the Ghost of Cassiopeia or the Ghost Nebula, IC 63 is slowly being eroded away by the star’s radiation. Your email address will not be published. Aufgrund ihrer geringen Flächenhelligkeit werden die beiden Nebel auch als Geisternebel (Ghost Nebula) oder … NGC 189 has an apparent magnitude of 8.8 and occupies 3.7’ of the sky, and NGC 129 shines at magnitude 6.5 and has an apparent size of 21’. Gamma Cassiopeiae can be used to find several interesting deep sky objects. This celestial ghost makes the perfect backdrop for the upcoming feast of All … You can follow any … Gamma Cassiopeiae is an eruptive variable star that serves as a prototype of a class of stars, the Gamma Cassiopeiae variable stars. In the late 1930s it underwent what is described as a shell episode and the brightness increased to above magnitude +2.0, then dropped rapidly to +3.4. IC 59 and IC 63 (Sh2-185) - Gamma Cassiopeiae Nebula, L: 6x10min (1x1), RGB: 5x5min each (2x2), Imager Temp -20C. Maybe the ISO is too high. If there is a transient disk, they are classified as Gamma Cassiopeiae variables. Reply . IC 59 und IC 63 sind gemischte Emissions-Reflexionsnebel die vom hellen Stern Gamma Cassiopeiae (der mittlere Stern des Himmels-W der Kassiopeia) zum Leuchten angeregt werden. The star’s estimated age is only 8 million years. At its brightest, the star outshines both Schedar (mag. The variations … The deep sky objects around Cassiopeia’s W, image: Wikisky. 3.4 – 3.97), and 27 Canis Majoris (mag. I really like this ‘subject’ … and you did a great job on it. Im Maximum erreicht er eine Helligkeit von 1,6 mag und wird damit noch heller als Schedir. It was the first star to be identified as a Be star, by the Italian astronomer Angelo Secchi in 1866. Cassiopeia is home to many interesting stars. I have only Ha ‘detail’ on it . The colours in the eerie nebula showcase how the nebula is affected by the powerful radiation from the distant star. Its poles are closer to the centre of mass and therefore hotter and more luminous than the equatorial region. With a temperature of 25,000 K, a mass 17 times that of the Sun, luminosity 34,000 times solar, and an age of 8 million years, Gamma Cassiopeiae is the youngest, most luminous, hottest and most massive of the five stars that form the W. At a distance of 550 light years, it is also by far the most distant. Thanks for any advice. 2.24) and Caph (mag. These lines are caused by a circumstellar disk of material lost from the star. The name Tsih (sometimes spelled Cih) comes from the star’s Chinese name, 策 (Cè), meaning “whip.” Gamma Cassiopeiae is the sole star in the Chinese Whip asterism. Many Be stars are variable in brightness. 99% Upvoted. It lies near several other constellations associated with the myth of Perseus: Perseus, Andromeda, Cepheus and Pegasus. Wang Liang is a legendary charioteer represented by an asterism formed by Caph, Schedar, Achird, Kappa Cassiopeiae and Lambda Cassiopeiae. Although it is a fairly bright star with an apparent visual magnitude that varies from 1.6 to 3.0. The nebula is being blasted by a torrent of radiation from a nearby, blue-giant star called Gamma Cassiopeiae, which can be easily seen with the unaided eye at the center of the distinctive "W" asterism that forms the constellation. Gamma Cassiopeiae problem - posted in DSLR & Digital Camera Astro Imaging & Processing: What am I doing wrong processing this image ... the star Navi became enormous and I cant figure out what to do about it, other than cropping it out entirely ... this is 20 images at 2:30 each. Acamar Achernar Acrux Adhara Albireo Alchiba Alcor Alcyone Aldebaran Alderamin Algenib Algol Algorab Alhena Alioth Alkaid Alkes Almach Alnair Alnilam Alnitak Alpha Centauri Alphard Alphecca Alpheratz Altair Aludra Ankaa Anser Antares Arcturus Ascella Asterope Atlas Atria Avior Baten Kaitos Bellatrix Betelgeuse Bharani Canopus Capella Caph Castor Celaeno Deneb Denebola Diphda Dubhe Electra Elnath Eltanin Enif Fomalhaut Gacrux Gamma Cassiopeiae Gienah Ginan Hadar Hamal Imai Izar Kaus Australis Kaus Borealis Kaus Media Kepler-22 Kraz Maia Marfik Markab Megrez Meissa Menkalinan Menkar Menkent Merak Merope Mesarthim Methuselah Star Miaplacidus Mimosa Minkar Mintaka Mira Mirach Mirfak Mirzam Mizar Mu Cephei Naos Nunki Peacock Phecda Pleione Polaris Pollux Procyon Proxima Centauri Rasalhague Regulus Rho Ophiuchi Rigel Rigil Kentaurus Ruchbah Sabik Sadr Saiph Sargas Scheat Schedar Segin Seginus Shaula Sheratan Sirius Spica Stephenson 2-18 Suhail Taygeta Thuban Toliman Unukalhai UY Scuti Vega VV Cephei VX Sagittarii Wasat Wezen WOH G64 Zeta Reticuli Zubenelgenubi Zubeneschamali, Navi, Tsih, Gamma Cassiopeiae, γ Cas, 27 Cassiopeiae, HD 5394, HR 264, HIP 4427, SAO 11482, FK5 32, BD+59°144, GC 1117, GCRV 526, PPM 12597, AG+60 106, ALS 6407, JP11 439, PLX 185.00, MCW 46, IRAS 00536+6026, TYC 4017-2319-1, 2MASS J00564251+6043002, ADS 782, Gaia DR2 426558460877467776, UBV 833, AAVSO 0050+60, WDS 00567+6043, CCDM J00567+6043A. Complex nebula to capture (only mag. Gamma Cassiopeiae ist ein unregelmäßig veränderlicher Stern der Spektralklasse B0 in 800 Lichtjahren Entfernung. This is the gamma-Cassiopeia Nebula. Gamma Cassiopeiae does not have a formal name. Close. Gamma Cassiopeiae location, image: Wikisky. Cassiopeia (the Queen) and Cepheus (the King) Border, From IC348 to NGC1333 (star field in Perseus). Segin, the other hot class B star in the asterism, has 9.2 solar masses, a temperature of 15,174 K, a luminosity 2,500 times that of the Sun and it is about 140 light years closer to us. High overhead in northern autumn evenings lies the W- shaped constellation Cassiopeia, in mythology the Queen and mother to Andromeda, to us brilliant against the background of the Milky Way and fully circumpolar from most of the United States and all of Canada. It is the prototype of the class of Gamma Cassiopeiae variable stars. Cassiopeia is a constellation found in the northern sky. The other three stars are much cooler, less luminous, less massive, considerably older, and much closer to us. It will then reach its highest point in the sky at 20:44, 65° above your northern horizon. Cassiopeia is one of the 88 modern constellationswe see today. Gamma Cassiopeiae was identified as an X-ray source in 1976, but it was unclear whether the star itself was the source or it had a mass-accreting binary companion. Gamma Cassiopeiae is an eruptive variable star, whose apparent magnitude changes irregularly between +1.6 and +3.0. As a result, its equatorial radius is larger than its polar radius, giving the star a flattened shape. Gamma Cassiopeiae has a luminosity 40,000 times that of our Sun. It varies from a maximum of 1.6 magnitude during an eruption to 3.0 magnitude when the mass it is expelling from its equator blocks some of its light. Both nebulae lie at an approximate distance of 610 light years. It is famous for its distinctive “W” shape. The Ghost Nebula (IC 63), image: ESA/Hubble, NASA (CC BY 4.0). Im Ausbruch kann sich der Spektraltyp bis zu F5 abkühlen. 1.6 – 3.0), Schedar (Alpha Cas, mag. The companion is believed to be more evolved than the primary and to have transferred some of its mass to the brighter star during an earlier evolution phase. The blue light of the nebula is the light from the star reflected by the dust in the nebula. IC 63 is visible in this image taken by the NASA/ESA Hubble Space Telescope. These stars exhibit irregular brightness variations over periods of decades. It is the central star of Cassiopeia’s W pattern. 3.44), Fulu (Zeta Cas, mag. 4.334). Their brightness varies with an amplitude of about a magnitude. Gamma Cassiopeiae underwent two such events in 1935-36 and 1939-40, brightening to above magnitude +2.0, then rapidly dimming to magnitude +3.4. Measurements of the star’s radial velocities led to the discovery that Gamma Cassiopeiae was a spectroscopic binary system. The best time of year to see the stars and deep sky objects of Cassiopeia is during the month of November, when the constellation is prominent in the evening sky. Gamma Cassiopeiae itself usually shines at magnitude 2.25, but it has been observed to fade to magnitude 3.0 and brighten to magnitude 1.6. Cassiopeia also contains two well-known supernova remnants: Tycho’s Star (3C 10), the remnant of a Type Ia supernova (SN 1572) observed in November 1572, and Cassiopeia A, the brightest extrasolar radio source in the sky. The brightest star belonging to this group is Achernar in the constellation Eridanus, the ninth brightest star in the sky. If you would like to get a little bit more serious with this hobby, you would need to have acces to some astronomy equipment and accessories, including telescopes, telescope mounts, eyepieces, filters, and software or star charts. Officially known as IC 63, the Nebula was photographed by Hubble in August 2016. IC 59 lies a bit farther from the star and shows less hydrogen-alpha emission and more reflected blue light. Gamma Cassiopeiae is 70,000 times more luminous than the Sun and is surrounded by two faint reflection / emission nebulae, IC 59 and IC 63. astrokuky. 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. Stretching across an area of 598 square degrees, it is the 25th constellation in size. Required fields are marked *, You may use these HTML tags and attributes:
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