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Antares is a red supergiant star in the constellation Scorpius, the scorpion. Antares represents the heart of the animal, perhaps due in part to its color. Two open star clusters appear to be nearby--if Antares is the center of a clock, a large cluster is seen at 2:30 and a smaller, closer cluster at 1:00.
Antares is both bright and conspicuously red or red/orange, and nearby gaseous clouds take on that color.
The bright star twice the distance of the large star cluster at 2:00 is Alniyat, which illuminates both blue and red clouds. Directly above Antares in this photo is 5-Oph, and it is embedded in a cloud that glows blue, near dense, cold clouds that do not glow and block light from stars behind them.
Antares is much larger than our sun. If Antares was at the center of our solar system, its outer perimeter would be between the orbits of Mars and Jupiter--that is, instead of being 93 million miles from the sun, we would be inside of Antares.
This cluster of stars and clouds can be seen all summer, just to the right of the Milky Way above the southern horizon.
This post is a composite of 47 exposures, each 120 sec, f/4.0, ISO 1600, composited by Starry Sky Stacker. Photographed from the rim of the Little Grand Canyon on the San Rafael Swell.
OUTFIT: OPH – Kerrdy Winter (also for playing GOLF)
Marketplace: marketplace.secondlife.com/stores/46527?lang=en-US
Rho Ophiuchi region
Imaged using the Telescope Live remote observing platform.
Heaven’s Mirror Observatory, Australia
Telescope: Takahashi FSQ-106 refractor
CCD Camera: FLI PL-16803
Filters: Astrodon LRGB
L: 2 x 600s
R: 4 x 600s
G: 4 x 600s
B: 2 x 600s
Processing: Maxim DL, PixInsight, Affinity Photo
Trying to catch comet Neowise C/2018 N1 near the Rho-Oph complex, I missaligned the camera and... Splitted it (right frame border)
Stack of 16 subs. Nikon D600 full spectrum Nikkor AIS 135mm f/2 @f/4, 30s each, ISO 3200, PSCC
Scorpius was very low on the SW horizon, with moderate light pollution and haze. Bortle scale 4-5
Macro shot of the Pumpkin Pancakes from our weekly breakfast spot in Austin called "Original Pancake House". You can see the real maple syrup and a dusting of cinnamon! Yum!!
Antares and Rho Oph regions
Credit: Giuseppe Donatiello
The Ophiuchus Molecular Cloud Complex is a nearby region of low-mass star formation in the Gould Belt. In reality this is a generic name to indicate a certain number of substructures located at different distances and not necessarily connected.
The complex includes two dense clouds, LDN1688 and 1689, located at the ends of large-scale filaments extending in a northeasterly direction (Loren et al. 1990).
More strictly, the dense dark cloud LDN1688, 134 pcs away, is called the Ophiuchus Molecular Cloud. LDN1689 is instead found at 144 pc based on Gaia DR2 measurements (Ortiz-Leon et al. 2018).
The stellar content of the Ophiuchus star-forming complex has long been studied, revealing a rich environment of young stellar objects (YSOs), protostellar sources and prestellar cores at various evolutionary stages. While LDN1688 hosts dense star formation activity, L1689 is more quiescent (Nutter et al. 2006). Despite its significant mass, L1689 does not exhibit the same star formation activity as other regions of the Gould Belt, such as M16.
The entire Ophiuchus complex is under the strong influence and feedback of the Sco OB2 association.
Antares (α Scorpii) is a red supergiant about 170 pc (550 light years) away, therefore it is placed prospectively behind the molecular complex. Nonetheless, it is shrouded in a large reflection nebula that diffuses its light. The yellower color of this nebula is not a calibration error but an effect due to scattering which tends to shift the peak of light to shorter wavelengths. The star is a double view. Antares B is a sequence and mag 5.5 star of spectral type B2.5V (Evans 1966).
Antares is a red supergiant M1.5 Iab variable star and the brightest star in Scorpius (mag +1.07). It is one of the largest known, with a radius approximately 680 times that of the Sun. Being in an advanced stage of evolution, with a current mass 15 times that of the Sun, it is destined to explode as a supernova within 100,000 years [The Perkins Catalog of Revised MK Types for the Cooler Stars].
It forms a binary system with a smaller, hotter companion, Antares B [A&A, 700, A36 (2025)] [MNRAS, Volume 529, Issue 4, April 2024, Pages 3630–3650].
Like all red supergiants, it is losing mass at a rapid rate and is producing a cloud of dust. This material is particularly evident in the mid-infrared, but the star's light is sufficient to produce scattering on neutral dust clouds. Scattering causes the "reflected" light to shift slightly to shorter wavelengths, which is why the cloud surrounding the star appears distinctly orange/yellow instead of red.
Galactic Environment
Antares is part of the Scorpius-Centaurus stellar association, one of the closest OB associations to Earth. This association is divided into three subgroups, and Antares belongs to the Superior Scorpius subgroup [John M. Carpenter et al 2025 ApJ 978 117].
NGC 6144 is a small globular cluster at 8.1 kpc (about 32,000 light-years) [The Astronomical Journal, Volume 119, Issue 4, pp. 1793-1802].
The two globular clusters are much more distant. M4 is about 2.2 kpc (7500 light years) away while NGC 6144 is even 8.1 kpc 8 (about 32,000 light years).
flussistellari.wordpress.com/2023/06/22/un-lavoro-in-cors...
Dust and clouds in the Scorpius.
Taken with Canon 6D, Samyang 135mm lens, AP1200 mount.
Location: Tivoli Southern Sky, Namibia, June 2022.
En Opus #4 publicaron mi serie de ilustraciones dedicadas a las tazas de té, también un lindo cuestionario que me encantó responder:
P Oph Nebula IC 4604 , testing mod to Canon 1100D , some star trailing might due to heavy Nikon D7000 with lens piggy backing on setup or coma problem
I did not want to chuck the data because of the trailing as clear nights are few and far between.
26x360 lights ,20x darks,5x flats
SW200P,EQ6,Canon 1100D
International Space Station passing over the church in the sea (St Cwyfan's) and fading into the Milky Way.
DSC_3040 - 9422 - LJ07 OPH - Alexander Dennis Trident/Alexander Dennis Enviro400 - Abellio London (Driver Trainer Vehicle) - Lewisham, Molesworth Street 23/07/20
Nottinghamshire Fire & Rescue Service - Scania P280 - Rescue Pump - Currently based at Arnold Fire Station
Very first collaboration with the very beautiful Ophélie.
Please help me by following my Instagram account :
Recurrent nova RS Oph in outburst. I observed it with the naked eye and estimated: +4.6 mag. I took photos from Yuzhno-Morskoy (near Nakhodka), Russia, on August 9, 2021, from 15:19 to 15:22 UT. I have been waiting for several hours, and sky cleared for few minutes.
Stagecoach Merseyside & South Lancashire 26053 SN16 OPH on Chester Park & Ride route PR2 in Foregate Street, Chester. Bank Holiday Monday 27th May 2019. DSCN49071.
Alexander Dennis-Enviro200 (MMC).
Nottinghamshire Fire & Rescue Service - Scania P280 - Rescue Pump - Currently based at Arnold Fire Station
Nottinghamshire Fire & Rescue Service - Scania P280 - Rescue Pump - Currently based at Arnold Fire Station
Seen here responding to a reported house fire
Stagecoach in Chester.
Alexander Dennis E20D MMC B41F, new in 2016.
Photographed in Chester, April 2017.
Very first collaboration with the very beautiful Ophélie.
Please help me by following my Instagram account :
Stagecoach Merseyside and South Lancashire Alexander Dennis E20D / Enviro 200MMC SN16 OPH (26053) passing through Chester operating a Park & Ride service, 21/08/21
Stagecoach MCSL 'Chester Park & Ride' Enviro 200MMC SN16 OPH 26053 , Chester Bus Interchange 20.7.21
Rho Oph
Credit: Giuseppe Donatiello
Tair-3S 300mm f/4.5 + Canon EOS 4000D on Avalon M-zero Obs mount
Antares is a red supergiant M1.5 Iab variable star and the brightest star in Scorpius (mag +1.07). It is one of the largest known, with a radius approximately 680 times that of the Sun. Being in an advanced stage of evolution, with a current mass 15 times that of the Sun, it is destined to explode as a supernova within 100,000 years [The Perkins Catalog of Revised MK Types for the Cooler Stars].
It forms a binary system with a smaller, hotter companion, Antares B [A&A, 700, A36 (2025)] [MNRAS, Volume 529, Issue 4, April 2024, Pages 3630–3650].
Like all red supergiants, it is losing mass at a rapid rate and is producing a cloud of dust. This material is particularly evident in the mid-infrared, but the star's light is sufficient to produce scattering on neutral dust clouds. Scattering causes the "reflected" light to shift slightly to shorter wavelengths, which is why the cloud surrounding the star appears distinctly orange/yellow instead of red.
Galactic Environment
Antares is part of the Scorpius-Centaurus stellar association, one of the closest OB associations to Earth. This association is divided into three subgroups, and Antares belongs to the Superior Scorpius subgroup [John M. Carpenter et al 2025 ApJ 978 117].
NGC 6144 is a small globular cluster at 8.1 kpc (about 32,000 light-years) [The Astronomical Journal, Volume 119, Issue 4, pp. 1793-1802].
Taken from Piano Visitone (1420m), Pollino National Park, Italy in August 2021.
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