View allAll Photos Tagged globularcluster
"Globular clusters are nearly spherical collections of hundreds of thousands of stars, held together by mutual gravitational attraction. These beautiful objects are nearly free of gas and dust, and contain some of the oldest stars in a galaxy.
The Milky Way is host to around 150 known globular clusters, and a few more are likely to exist hidden behind the thick disk of our galaxy. The number of globular clusters in a given galaxy seems to depend on its mass: the Andromeda galaxy, our nearest big galactic neighbour, has over 400 clusters, while the giant elliptical galaxy M87 is home to more than ten thousand."
Pictured below is the Hercules globular cluster - M13 cropped and an uncropped version showing annotation of all the distant galaxies in the field of view.
Gear
3” Refractor - WO GT71 on HEQ5 Pro (guided)
ZWO EAF, EFW, 294mm all controlled by ASI AIR Pro
Filters - Optolong L,R,G,B (3hrs Lum, 30min each RGB - integration 4.5hrs)
Shot from Bortle 4 Central Ontario (Just south of Peterborough)
Stacked in APP, Processed in PI
Crop of the NOIRLab image of the Small Magellanic Cloud showing the globular cluster 47 Tucanae.
Original caption: Part of the SMASH dataset showing what is arguably the best wide-angle view of the Small Magellanic Cloud to date. The Large and Small Magellanic Clouds are the largest satellite galaxies of the Milky Way and, unlike the rest of the satellite galaxies, are still actively forming stars — and at a rapid pace.
When working on this image I was intrigued to spot many galaxies in the background. They are everywhere. I’ve numbered a few in this image.
Após algum tempo sem capturar esses objetos, que acho fascinantes, resolvi voltar a me dedicar um pouco mais a eles: os agrupamentos estelares globulares. Esté o maior e mais brilhante deles no céu noturno: Ômega Centauri (NGC5139). Visível a olho nu, relativamente próximo ao Cruzeiro do Sul, está localizado a cerca de 15.800 anos-luz de distância, na constelação de Centaurus. Contém mais de 10 milhões de estrelas.
After some time away from capturing these fascinating objects, I decided to return to them with renewed focus: globular star clusters. These are some of the oldest stellar systems in the universe. Here is the largest and brightest one in the night sky: Omega Centauri (NGC 5139). Visible to the naked eye and located relatively close to the Southern Cross, it lies about 15,800 light-years away in the constellation Centaurus. It contains over 10 million stars packed into a dense, spherical swarm.
- Exposures: 24 Ligth Frames of 120s, no darks. Used L-Pro filter. 48 minutes total exposure. Processing on Pixinsight. Bortle 8
- Camera: Zwo Asi 533mc Pro, gain 100 at 0°C
- Scope: William Optics zs sd (66/388mm) with 0.8 focal reducer
- Mount: Neq6 Pro Sky-watcher mount
- Guiding specs: Asiair and ASI120mm in a zwo 30mm f4 miniguider
#astrophotography #astrofotografia #astromomia #astronomy #telescopio #telescope #williamoptics #zs66 #zs66sd #Eq5 #asi533mcpro #globularcluster #NGC5139 #OmegaCentauri #Stars #Bortle8 #bortle8sky #StarCluster #DeepSkyStacker #deepsky #pixinsight #asi120mm #ZwoAsi #zwoasi120mm #asiair #optolong #optolonglpro
M2 is a globular cluster in the constellation Aquarius, discovered by Jean-Dominique Maraldi in 1746. It is one of the largest known globular clusters. M2 is about 55,000 light years from earth and contains about 150,000 stars in an area 175 lights years across. Its brightest stars are red and yellow giant stars. This is a stack of 57 exposures at 3 minutes - for a total of about 2.85 hrs of imaging time taken with a Sky-Watcher Esprit 100ED telescope and a QHY-268C OSC. Stacking and image processing with Siril, GraXpert, and Adobe Photoshop.
Globular Cluster M13, the Great Cluster in Hercules. Taken with remote telescope by Gregory Scheckler, Feb 28, 2008
M5 is another globular cluster. This one is located in the constellation Serpens. Another older picture
Taken with my new refractor. This is the second brightest globular cluster in the sky, and it contains millions of stars.
Aglomerado globular M22 (NGC 6656), conhecido como aglomerado de sagitário, está localizado a cerca de 10.600 anos-luz de distância e é um dos mais brilhantes. Fazia algum tempo que não fotografava objetos deste tipo porque eu não gostava muito do meu processamento neles. Este é o primeiro que eu realmente gostei! Por serem objetos bastante brilhantes, posso capturá-los de casa na cidade (bortle 8), então estou iniciando um catálogo desses objetos.
M22 Globular Cluster (NGC 6656), known as the Sagittarius Cluster, is located about 10,600 light-years away and is one of the brightest. It had been a while since I had photographed objects of this type because I didn't really like my processing of them. This is the first one that I've truly liked! As they are very bright objects, I can capture them from home in the city (Bortle 8), so I'm starting a catalog of these objects.
* Exposures: 38 Ligth Frames of 120s, 20 darks. Used L-Pro filter. 1h16m minutes total exposure. Processing on Pixinsight. Bortle 8
* Camera: Zwo Asi 533mc Pro, gain 100 at -10°C
* Scope: Sky-Watcher 200p (200/1000mm) with GSO 1.1 Comma Corrector
* Mount: NEQ6 Pro Sky-watcher mount
* Guiding specs: Asiair and ASI290mc in a 60x220mm everwin guidescope
#astrophotography #astrofotografia #astromomia #astronomy #telescopio #telescope #Skywatcher #Skywatcher200p #NEQ6Pro #asi533mcpro #NGC6656 #M22 #Globularcluster #Bortle8 #DeepSkyStacker #deepsky #pixinsight #asi290mc #ZwoAsi #zwoasi290mc #asiair #optolong #optolonglPro