View allAll Photos Tagged globularcluster
Still flowering in september - Floraison encore en septembre
Lychnis chalcedonica ( Caryophyllaceae)
Flowers are attractive to butterflies, and possibly even hummingbirds.
Common Names: burning love, flower of Bristol, Jerusalem cross, Campion, Catchfly, Rose of Heaven, Ragged Robin, Dusky Salmon, Flower of Jove, Scarlet lychnis, Nonesuch, Common rose campion, Fireball, Constantinople campion, Meadow campion.
Les fleurs attirent les papillons et peut-être même les colibris.
Noms communs: Silene chalcedonica, croix de Jerusalem ou Coquelourde.
TS-Optics UNC 10" f/5, ZWO ASI178MC, coma corrector.
10x60 sec + 8x30 sec light frames, 16 dark frames, 16 bias frames.
APT, PHD2, DSS, Fitswork, Photoshop
A real gem in the night sky, this globular star cluster is M13 (13th entry in Charles Messier's catalogue of deep sky objects), the Great Hercules Cluster in the northern hemisphere sky. It is visible to the naked eye as a fuzzy patch of light under a clear, dark sky. Located about 25,000 light-years away from Earth, this globular cluster is made up of several hundred thousand stars and occupies a region of space that measures around 150 light-years in diameter. The stars of M13 are about 12 billion years old, an age comparable to the age of the Universe itself (about 13.7 billion years).
Look at it with a small telescope and the view is filled with countless sparkling stars. With larger telescopes and in deep exposures the tremendous number of stars becomes evident. One can only imagine the view from a hypothetical planet around a star close to the center of M13, a night sky filled with thousands of stars brighter than the brightest stars in our own night sky.
The faint 12th-magnitude galaxy NGC 6207 can be seen below and to the left of M13. It is a spiral galaxy located about 40 million light years away that appears by chance close to M13. Between M13 and NGC 6207 lies another smaller and fainter galaxy - IC 4617, which is more than 10 times farther away than NGC 6207. Can you spot it?
Telescope: Orion EON ED 80/500 refractor
Mount: Modified Vixen Sphinx (NexSXW)
Camera: Canon EOS 20Da
Light frames: 28 x 3 minutes (total: 84 minutes), ISO 1600, Daylight WB, calibrated with darks
Guiding: Skywatcher 80/400 refractor, Skywatcher Synguider autoguider
Date & Location: 3/5/2019 - Chalkidiki, Greece
Processing: DSS 4.1.1, Adobe Photoshop CS6 with Astronomy Tools Actions Set (spikes added to the brightest stars)
Still flowering in september - Floraison encore en septembre
Lychnis chalcedonica Silene chalcedonic ( Caryophyllaceae)
Common Names: burning love, flower of Bristol, Jerusalem cross,
Campion, Catchfly, Rose of Heaven, Ragged Robin, Dusky Salmon, Flower of Jove, Scarlet lychnis, Nonesuch, Common rose campion, Fireball, Constantinople campion, Meadow campion.
Noms communs: Silene chalcedonica, croix de Jerusalem ou Coquelourde.
Flowers are attractive to butterflies, and possibly even hummingbirds.
Les fleurs attirent les papillons et peut-être même les colibris.
M3
Clusters of stars come in two flavors. Open clusters, where the stars eventually drift apart; and globular clusters, where the stars are gravitationally bound. Our galaxy has about 150 globular clusters orbiting in its halo. At an age of 8 billion years, Messier 3 is a youngster as far as globular clusters go. At a distance of 33k light-years it's apparent diameter, 18 archmin, corresponds to a physical diameter of about 180 light-years.
M3 is an excellent target for relatively small telescopes, and can even be glimpsed by the unaided eye under darks skies. With a telescope of at least 8" in diameter, the stars become well resolved.
Nikon D5500
Nikon 300mm MF ED f/4.5, @ f/5.6
55x30s, 1600iso
SkyGuiderPro
Regim - Sig18
Affinity Photo
cropped - 50% reduced
RG_M3_Sig18_APap_c50r90q
ZWO ASI6200MM-Pro/EFW 2" x 7 (LRGB)
Tele Vue NP101is (4" f/5.4)
Losmandy G11
Capture: RGB 40 x 120s each filter, L 60 x 90s.
Processed in PixInsight
Still flowering in september - Floraison encore en septembre
Lychnis chalcedonica ( Caryophyllaceae)
Common Names: burning love, flower of Bristol, Jerusalem cross,
Campion, Catchfly, Rose of Heaven, Ragged Robin, Dusky Salmon, Flower of Jove, Scarlet lychnis, Nonesuch, Common rose campion, Fireball, Constantinople campion, Meadow campion.
Noms communs: Silene chalcedonica, croix de Jerusalem ou Coquelourde.
Flowers are attractive to butterflies, and possibly even hummingbirds.
Les fleurs attirent les papillons et peut-être même les colibris.
Messier 13 (M13), also designated NGC6205 and sometimes called theGreat Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.
M13 is about 145 light-years in diameter and is 25,100 light-years away from Earth.
It was discovered in 1714 by Edmund Halley.
A globular cluster is a spherical collection of stars that orbits a galactic core as as satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centres.
Details.
M: Mesu 200
T: TMB 152/1200
C: QSI683 Baader LRGB filters
30x600s Luminance
30x600s Red
30x600s Green
30x600s Blue
Totalling 20 hours.
This was all taken as well during the full moon period, as Globular clusters are less affected by moonlight than other Deep Sky objects.
A Globular Cluster in Centaurus
Image exposure: 31 Minutes
Image Size: 2.13 º x 1.41 º
Image date: 2023-03-29
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Messier 3 (M3 or NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered by Charles Messier on May 3, 1764,[8] and resolved into stars by William Herschel around 1784.
it occupies a patch of sky about 1/3 of the size of the moon.
This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 8 billion years old. It is located at a distance of about 33,900 light-years away from Earth.
During the night of 21-22 April I managed to image this beautiful globular cluster of stars, M3 in Canes Venatici.
Discovered in May 1764 it was the first object discovered solely by Charles Messier who placed it as No.3 in his catalogue. Messier thought of it as a gaseous nebula but William Herschel later resolved stars correcting this error.
The cluster is believed to contain around 500,000 stars and is estimated at 11.4 billion years old. M3 lies at a distance of 32,600 light-years.
Imaged with my Esprit 120ED and ZWO 2600MC camera.
The camera was cooled to -10°C and gain was 100.
180x120s - Total 6Hrs
Light frames were calibrated with temp. matched darks. Flat frames and dark flats were used.
Analysed and stacked using APP and completed in Photoshop 2022.
Many thanks for looking - as ever!
ZWO ASI6200MM-Pro/EFW 2" x 7 (LRGB)
Tele Vue NP101is
Losmandy G11
Object was about 17 degrees above the horizon when captured at approximately 0800 UTC.
Captured in NINA (1 hour total integration)
L: 95 x 20s
RGB: 30 x 20s
Processed in PixInsight with WBPP, DBE, LinearFit, SPCC, BlurXTerminator, and NoiseXTerminator.
My first attempt with putting the Nikon D5100 at the back of the Celestron Edge HD 925. This gave a focal length of 2210 mm - my guiding wasn't quite up to it. This is a stack of 39 exposures between 40 s and 55 s in length at ISO 1600. Preprocessing, registration, stacking, and initial processing in PixInsight. Final touches in Photoshop.
Messier 3 (M3 or NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered by Charles Messier on May 3, 1764, and resolved into stars by William Herschel around 1784.
This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 8 billion years old. It is located at a distance of about 33,900 light-years away from Earth.
A globular cluster is a spherical collection of stars that orbits a galactic core as as satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centres.
Details.
M: Mesu 200
T: TMB 152/1200
C: QSI683 Baader LRGB filters
30x600s Luminance
30x600s Red
30x600s Green
30x600s Blue
Totalling 20 hours.
This was all taken as well during the full moon period, as Globular clusters are less affected by moonlight than other Deep Sky objects.
A Globular Cluster in Serpens
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Image exposure: 20 minutes
Image field of view: 39.5 x 26.2 arcmin
Image date: 2022-06-25
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Messier 4
Diameter: 75 light years.
Distance: 7,200 light years.
149 x 25 seconds = 62 minutes.
Apparent size: 36 arc-minutes
(just over one Moon diameter).
2020-04-17
Messier 56 is a globular cluster of stars in the constellation of Lyra. It was discovered in 1779 by Charles Messier.
Spanning 84 light-years in diameter and approx 32,900 light years away it is believed to be about 13.7 billion years old, It is believed to contain around 80,000 stars.
A globular cluster is a spherical collection of stars that orbits a galactic core as as satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centres.
Details.
M: Mesu 200
T: TMB 152/1200
C: QSI683 Baader LRGB filters
30x600s Luminance
30x600s Red
30x600s Green
30x600s Blue
Totalling 20 hours.
Globular Cluster in Sagittarius.
Magnitude: +5.1
Apparent size:32 arc-min (just over one lunar diameter).
Diameter: 97 light years.
Distance:10,000 light years.
Image date: 2020-09-22.
Exposure: 12 frames x 4 minutes = 48 minutes.
Field of View: estimated approximately 35′ x 20′
Skywatcher Esprit 120 telescope.
EQ6-r mount.
ZWO ASI071 camera.
M 3 is found in the constellation Canes Venatici and is one of the three brightest globular clusters in the northern sky.
Discovered by Charles Messier in 1764 and later by William Herschel in 1784.
I chose this cluster because when the moon is bright (99%), you need a bright image to be able see through the Moon glow in the sky. We have been having really poor weather in southern Spain and this was a small opportunity to take an image in between the clouds. Unfortunately the humidity was at 100% for the entire session making for slightly blurred stars, but I though it would be a challenge to see what I could make of just 2.5 hours of data under extreme conditions.
A single night of imaging in June 2023 from my home in Gérgal, Spain.
A higher resolution image with imaging details can be found on my Astrobin page at: astrob.in/full/7ss8q9/0/
Thank you for looking.
Technical summary:
Captured: 03-05-2023
Imaging Sessions: 1
Location: Gérgal, Andalucía, Spain
Bortle Class: 4
Total Integration: 2 hours 30 minutes
Red 30x 60s 30m BIN 2 Gain 100 0C
Green 30x 60s 30m BIN 2 Gain 100 0C
Blue 30x 60s 30m BIN 2 Gain 100 0C
UV/IR 60x 60s 1h BIN 2 Gain 100 0C
Pixel Scale: 0.28 arcsec/pixel (Drizzle X2)
Telescope: Celestron C11 Edge HD f/10 2800mm
Imaging Camera: ZWO ASI 6200MM Pro
Guiding: Omegon 60mm - ZWO ASI120MM Mini
Filters: Astronomik R, G, B, UV/IR
Mount: iOptron CEM120 EC
Computer: Minix NUC
Capture software: NINA, PHD2
Editing software: PixInsight, Adobe Lightroom
Comet C/2021 A1 (Leonard) is seen less than a degree away from the globular cluster M3 on the morning of December 3, 2021. The image was made of 24 fifteen second exposures taken with a Canon 80D and a Canon 300 mm f/4L lens. (ISO 1000, f/4). Tracking was done with an iOptron Sky Tracker with stacking in Nebulosity. Processed with LR and StarSpikes Pro.
Globular cluster Messier 3 in Canes Venatici ~33,900 LY distant.
Celestron Edge HD11 & ZWO ASI1600MM Pro camera
30 minutes Luminance (180x10 seconds), 10 minutes each R, G, B channel (60x10 seconds)
Designation: M15, NGC 7078
Constellation: Pegasus
Visual magnitude: +6.2
Apparent size: 18′
Diameter: 178 light years.
Distance: 34,000 light years.
21 minute exposure.
2019-10-24
M2 is a large, bright globular cluster in the constellation Aquarius. This image was acquired under dark skies near Goldendale, WA, using a telescope and cooled CCD camera designed for astroimaging.
Telescope: Celestron Edge HD 8
Camera: QSI 683wsg
Mount: Astro-Physics Mach 1 GTO
Integration: 25-30 minutes each of RGB (5 minute subs)
Post Processing Software: PixInsight, Adobe Lightroom
Globular Cluster NGC 6752 in the constellation Pavo.
Shot remotely from Siding Spring Australia using a half metre f/6.8 Planewave CDK, f/4.5 focal reducer & FLI-PL6303E CCD camera.
7x120 secs Luminance
1x120 secs red, green & blue channels
Globular Cluster NGC 104.
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Image exposure: 75 minutes
Image size: 1.99º x 1.3º
Image date: 2022-09-18
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A wide-field 2 panel mosaic, of the cosmic dust clouds that cross the rich field of stars of Corona Australis (Latin for the Southern Crown).
Gear:
William Optics Star 71mm f/4.9 Imaging APO Refractor Telescope.
QHY163M Camera Sensor cooled to -30°C.
Technical Card:
Integration Time: 18 hours total (9 hours per panel).
L = 9 hours total (Binning 1x1).
R = 3 hours total (Binning 2x2).
G = 3 hours total (Binning 2x2).
B = 3 hours total (Binning 2x2).
Calibration frames:
Bias, Darks & Flats.
Image Acquisition:
Guiding in Open PHD.
Image acquisition in Sequence Generator Pro.
Plate Solving in Platesolve 2 via SGP Framing & Mosaic Wizzard.
Processing:
Pre-Processing and Linear workflow in PixInsight,
star separation with StarNet++ Pi Plug-in,
and finished in Photoshop.
Astrometry Info:
Center (RA, Dec): 285.970, -37.530
Center (RA, hms): 19h 03m 52.739s
Center (Dec, dms): -37° 31' 46.701"
Size: 3.63 x 2.86 deg.
Radius: 2.312 deg.
Pixel scale: 8.17 arcsec/pixel.
Orientation: Up is 162.5 degrees E of N.
View an Annotated Sky Chart of this image.
View image in the WorldWideTelescope.
&creditsUrl=&ra=286.235505&dec=-37.182374&x=842.7&y=455.4&rotation=17.54&thumb=https://nova.astrometry.net/image/16376714){kind=link}
This image is part of the Legacy Series.
Flickr Explore:
Photo usage and Copyright:
Medium-resolution photograph licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Terms (CC BY-NC-ND 4.0). For High-resolution Royalty Free (RF) licensing, contact me via my site: Contact.
Martin
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Comet C/2021 A1 (Leonard) continues to brighten. Early this morning (3 December) it danced with the nice globular cluster M3. From suburban Bloomington, Indiana, with no Moonlight but plenty of light pollution.
75 frames, each 90 sec. (nearly 2 hours total exposure), processed in Astro Pixel Processor, once to register on the comet, again to register on the stars, processed in Lightroom and composited in Photoshop.
Explore Scientific 102mm f/7 refractor, ZWO ASI294MC camera, UV/IR cut fillter, iOptron CEM25P mount, ASIAir Pro controller.
Messier 13 or M13, also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of several hundred thousand stars in the constellation of Hercules.
This image is about 1 hour and half of total integration time with a new setup (OTA) a fast.newton Skywatcher 200mm f/4 with a GPU Corrector on a QHYCCD 183MC-Cool. Taken the first night in corse this september
more specs on astrobin:
This image, a 2-panel mosaic, shows the bright star Antares, globular star clusters M4 (larger) and NGC 6144 (smaller), and swirling nebulosity at the heart of the constellation Scorpius.
Taken under dark skies near Goldendale, WA.
Telescope: William Optics ZenithStar 110mm f/7 refractor with 0.8x reducer
Camera: Modified Canon 450D (XSi)
Mount: Astro-Physics Mach1 GTO
Integration: 18 mins (6 x 180 sec) per panel
Post-Processing Software: PixInsight 1.8, Adobe Photoshop, Adobe Lightroom
The scattered stars of the globular cluster NGC 6355 are strewn across this image from the NASA/ESA Hubble Space Telescope. This globular cluster lies less than 50,000 light-years from Earth in the Ophiuchus constellation. NGC 6355 is a galactic globular cluster that resides in our Milky Way galaxy's inner regions.
Globular clusters are stable, tightly bound clusters of tens of thousands to millions of stars, and can be found in all types of galaxy. Their dense populations of stars and mutual gravitational attraction give these clusters a roughly spherical shape, with a bright concentration of stars surrounded by an increasingly sparse sprinkling of stars. The dense, bright core of NGC 6355 was picked out in crystal-clear detail by Hubble in this image, and is the crowded area of stars towards the centre of this image.
With its vantage point above the distortions of the atmosphere, Hubble has revolutionised the study of globular clusters. It is almost impossible to distinguish the stars in globular clusters from one another with ground-based telescopes, but astronomers have been able to use Hubble to study the constituent stars of globular clusters in detail. This Hubble image of NGC 6355 contains data from both the Advanced Camera for Surveys and Wide Field Camera 3.
Credits: ESA/Hubble & NASA, E. Noyola, R. Cohen; CC BY 4.0
Behold the Rho Ophiuchi cloud, a beautiful and colorful star forming region
Processing credit : Jean Marc Da Costa
Data credit : Telescope Live
Aquisition :
Red 17*300s / Green 19*300s / Blue 18*300s / total 4h30
EL SAUCE OBSERVATORY, CHILE -70.76300° E -30.47253° N
Telescope Nikon 200 F/2
Camera FLI ML16200
Caldwell Object 79
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Constellation: Vela
Magnitude: +6.75
Apparent size: 20 arc min
Diameter: 93 light years.
Distance: 16,000 light years.
======================
Image date: 2021-03-04
Exposure: 44 minutes
Frames: 11×239.6 sec
Field of View: 1.59° x 1.06°
======================
The teeming stars of the globular cluster NGC 6544 glisten in this image from the NASA/ESA Hubble Space Telescope. This cluster of tightly bound stars lies more than 8000 light-years away from Earth and is — like all globular clusters — a densely populated region of tens of thousands of stars.
This image of NGC 6544 combines data from two of Hubble’s instruments — the Advanced Camera for Surveys and Wide Field Camera 3 — as well as two separate astronomical observations. The first observation was designed to find a visible counterpart to the radio pulsar discovered in NGC 6544. A pulsar is the rapidly spinning remnant of a dead star, emitting twin beams of electromagnetic radiation like a vast astronomical lighthouse. This pulsar rotates particularly quickly, and astronomers turned to Hubble to help determine how this object evolved in NGC 6544.
The second observation which contributed data to this image was also designed to find the visible counterparts of objects detected at other electromagnetic wavelengths. Instead of matching up sources to a pulsar, however, astronomers used Hubble to search for the counterparts of faint X-ray sources. Their observations could help explain how clusters like NGC 6544 change over time.
NGC 6544 lies in the constellation Sagittarius, close to the vast Lagoon Nebula, a hazy labyrinth of gas and dust sculpted by the fierce winds of newly born stars. The Lagoon Nebula is truly colossal — even by astronomical standards — and measures 55 light-years across and 20 light-years from top to bottom. Previous Hubble images of the nebula incorporated infrared observations to reveal young stars and intricate structures that would be obscured at visible wavelengths by clouds of gas and dust.
[Image Description: A cluster of stars in warm and cool colours. The whole view is filled with small stars, which become much denser and brighter around a core just right of centre. Most of the stars are small, but some are larger with a round, brightly-coloured glow and four sharp diffraction spikes. Behind the stars, a dark background can be seen.]
Credit:
ESA/Hubble & NASA, W. Lewin, F. R. Ferraro; CC BY 4.0
In order to keep bizzy I picked up my old telescope, essentially an objective of 2000mm focal distance (and a diameter of 200mm). After several sessions, and a lot of learning and calibrating of the scope, this is my temporary best result of the well known globular cluster M3.
To be continued...
The muted red tones of the globular cluster Liller 1 are partially obscured in this image by a dense scattering of piercingly blue stars. In fact, it is thanks to Hubble’s Wide Field Camera 3 (WFC3) that we are able to see Liller 1 so clearly in this image, because the WFC3 is sensitive to wavelengths of light that the human eye can’t detect. Liller 1 is only 30,000 light-years from Earth – relatively neighborly in astronomical terms – but it lies within the Milky Way’s ‘bulge’, the dense and dusty region at our galaxy’s center. Because of that, Liller 1 is heavily obscured from view by interstellar dust, which scatters visible light (particularly blue light) very effectively. Fortunately, some infrared and red visible light can pass through these dusty regions. WFC3 is sensitive to both visible and near-infrared (infrared that is close to the visible) wavelengths, allowing us to see through the obscuring clouds of dust, and providing this spectacular view of Liller 1.
Liller 1 is a particularly interesting globular cluster, because unlike most of its kind, it contains a mix of very young and very old stars. Globular clusters typically house only old stars, some nearly as old as the universe itself. Liller 1 instead contains at least two distinct stellar populations with remarkably different ages: the oldest one is 12 billion years old, and the youngest component is just 1-2 billion years old. This led astronomers to conclude that this stellar system was able to form stars over an extraordinarily long period of time.
Image credit: ESA/Hubble & NASA, F. Ferraro
#NASA #MarshallSpaceFlightCenter #MSFC #Marshall #HubbleSpaceTelescope #HST #astrophysics #gsfc #starcluster
This scintillating image showcases the globular cluster NGC 6540 in the constellation Sagittarius, which was captured by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 and Advanced Camera for Surveys. These two instruments have slightly different fields of view — which determines how large an area of sky each instrument captures. This composite image shows the star-studded area of sky that was captured in both instruments’ field of view.
NGC 6540 is a globular cluster, a stable, tightly bound multitude of stars. The populations of these clusters can range from tens of thousands to millions of stars, all of which are trapped in a closely-packed group by their mutual gravitational attraction.
The brightest stars in this image are adorned with prominent cross-shaped patterns of light known as diffraction spikes. These astronomical embellishments are a type of imaging artefact, meaning that they are caused by the structure of Hubble rather than the stars themselves. The path taken by the starlight as it enters the telescope is slightly disturbed by its internal structure, causing bright objects to be surrounded by spikes of light.
Hubble peered into the heart of NGC 6540 to help astronomers measure the ages, shapes, and structures of globular clusters towards the centre of the Milky Way. The gas and dust shrouding the centre of our galaxy block some of the light from these clusters, as well as subtly changing the colours of their stars. Globular clusters contain insights into the earliest history of the Milky Way, and so studying them can help astronomers understand how our galaxy has evolved.
Credits: ESA/Hubble & NASA, R. Cohen; CC BY 4.0
This is my favorite region to shoot in the entire night sky. Where else can you get such a jaw-dropping splash of red, blue, and yellow-gold nebulosity - and a globular star cluster (M4) thrown in for good measure - all in one frame? And the trails of dark nebulosity confer an impression of motion - as if the colorful fireworks are shooting forward. But the object has always been a bear to process for me, and this image has "technical difficulties," but I will come back to it later and work on improving it.
This is a stack of 52 tracked (not guided) 90-second exposures taken with a stock Fujifilm X-T10 camera and Samyang 135mm f/2 lens at f/2, ISO 1600. The images were stacked in DSS and processed in Astro Pixel Processor (APP) and Photoshop. No calibration frames were applied for this image. I took flat frames but the stacking in DSS yielded a very gray image that was hard to coax any color out of, so I'll have to go back and look at what's going on there. Fortunately, APP is very good at removing gradients and vignetting, so flat frames are not really needed - for this setup anyway.
There was a lot of smoke in the air from nearby controlled burns, which I think cut down the transparency. I had to exclude a number of the early exposures because the stars were massively bloated due to light scattering by the smoke. The camera was mounted on an Orion Sirius EQ-G equatorial mount, which provided the tracking.
M53 (ou NGC 5024) est un amas globulaire situé dans la constellation de la Chevelure de Bérénice. Il a été découvert par l'astronome allemand Johann Elert Bode en 1775.
NGC 5053 est un amas globulaire situé dans la constellation de la Chevelure de Bérénice à environ 21,5k a.l. de la Terre. Il a été découvert par l'astronome germano-britannique William Herschel en 1784.
Messier 53 (also known as M53 or NGC 5024) is a globular cluster in the Coma Berenices constellation. It was discovered by Johann Elert Bode in 1775.
NGC 5053 is a globular cluster in the northern constellation of Coma Berenices. It was discovered by German-British astronomer William Herschel on March 14, 1784.
(sources: Wikipedia)
= Acquisition info =
William Optics Zenithstar 73ii (FL 430mm)
Risingcam IMX571 color
iOptron CEM26 + iPolar
ZWO ASI224MC + WO Uniguide 32/120
NINA & PHD2
= Séances photos =
- 7 mars 2024 : Filtre L-Pro / 120 x 80
= Traitement/processing =
Siril & Gimp
@Astrobox 2.0 / St-Jean-sur-Richelieu, Québec
AstroM1
(rsi1x.2)
I have been waiting for quite some time to capture the Rho Ophiuchi region. Initially, I was only thinking about shooting a deep sky image, but after some successful nightscapes with my tele zoom lens, it was clear to me that I had to capture it with a nice looking foreground.
I finally got my chance during my latest stay in the Gantrisch region, where I have been able to capture this incredibly colorful region of sky rising behind a peak called Nuenenen. As the sky was not perfectly clear the brighter stars are sporting dreamy halos.
Rho Ophiuchi is the close pair in blue nebulosity near the center of the image. The star system, located only 400 light years away, is distinguished by its colorful surroundings, which include a red emission nebula around σ Scorpii (Alniyat) and numerous light and dark brown dust lanes. The yellow star below the Rho Ophiuchi molecular cloud system is Antares, while the distant but coincidently-superposed globular cluster M4, is visible between Antares and the red emission nebula.
Astro modified Canon EOS 6D
Canon EF 70-200 f/2.8 L
iOptron Skytracker
Sky:
20 x 60s @ ISO1600 stacked with fitswork4
Foreground:
3 x 60s @ ISO1600 stacked with PS
Thanks for all your faves and comments.
Messier 71 (M71 or NGC 6838) is a globular cluster in the small northern constellation Sagitta and is about 12,000 light years away from Earth. Up until the 1970’s this cluster was designated as a densely packed open cluster because of the loose central region, today it is designated as a loosely concentrated globular cluster with a young age of 9-10 billion years.
Observation data (J2000 epoch)
Class: X-XI
Constellation: Sagitta
Right ascension: 19h 53m 46.49s
Declination: +18° 46′ 45.1″
Apparent magnitude (V): 8.2
Apparent dimensions (V): 7.2'
Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO ASI2600MC camera running at 0F, 85x60 seconds guided exposures, Sky-Watcher EQ6R-Pro pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: May 18, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).
L'ammasso globulare di Ercole (chiamato anche M13 per la sua posizione nel catalogo di Messier, o anche NGC 6205) è un ammasso globulare visibile nella costellazione boreale di Ercole.
E' l'ammasso globulare più brillante dell'emisfero settentrionale ed è perfino visibile ad occhio nudo data la sua magnitudine di 5.8.
Il suo diametro angolare è di 23' (per confronto, la luna piena ha un diametro di 30'), mentre il suo diametro reale è di circa 165 anni luce.
M13 contiene centinaia di migliaia di stelle: nei pressi del suo nucleo, le stelle sono circa 500 volte più concentrate che nei dintorni del Sistema Solare.
Si stima che l'età di M13 sia tra i 12 e i 14 miliardi di anni; la sua distanza dalla Terra è di 23157 anni luce.
M13 è famoso anche perchè nel 1974 venne inviato nella sua direzione un messaggio radio di 1679 bit sfruttando il radiotelescopio di Arecibo.
[testo adattato da Wikipedia]
Chissà se qualcuno raccoglierà questo messaggio e magari risponderà...
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The Globular Cluster of Hercules (also known as M 13 from its position in the Messier Catalog, or as NGC 6205) is a globular cluster visible in the constellation of Hercules. It is the brightest globular cluster in the northern hemisphere and is visible even to the naked eye given its apparent magnitude of 5.8.
Its angular diameter is 23', while its real diameter is approximately 165 light years.
M13 contains several hundred thousand stars: around its core, stars are about 500 times more concentrated than around the solar system.
The age of M 13 has been estimated to be between 12 and 14 billion years. Its distance from Earth is 23,157 light years.
In 1974 a symbolic attempt was made to send a message to other worlds. To celebrate a substantial expansion of Arecibo's 305-meter radio telescope (now unfortunately no longer operational), a coded message of 1,679 bits was transmitted to M13.
[text adapted from Wikipedia]
Technical data
Telescope: RC12 GSO Truss (diameter 304mm, focal lenght 2432mm)
Mount: GM2000HPSII
Camera: ZWO ASI 2600 MM Pro with Astrodon filters LRGB
Guiding system: ZWO OAG-L with guide camera ASI 174MM
Exposure details:
L 36x60" bin3 -15C, gain 100
RGB 27/25/26x60" bin3 -15C, gain 100
Total integration time: 1h54'
Acquisition: Voyager, PHD2
Processing: Pixinsight 1.8, Photoshop CS5
SQM-L 21.4
Location: Promiod (Aosta Valley, Italy), own remote observatory
Date: May 2022
M71 is a Globular Star Cluster in the constellation Sagitta, set against a rich backdrop of stars in the Milky Way.
Captured in June of 2024 under dark skies near Goldendale, WA.
Telescope: William Optics ZenithStar 110mm f/7
Reducer: Astro-Tech 0.8x
Camera: Modified Canon 450D (XSi)
Mount: iOptron iEQ45 Pro
Integration: 45 min (9 x 5 min)
Processing Software: PixInsight 1.8, Adobe Lightroom Classic
Messier 13 The Great Globular Cluster in Hercules (also designated NGC 6205). It has an apparent visual magnitude of 5.8 and its angular diameter is 16.6 arc-minutes. Edge on 12th magnitude galaxy NGC6207 can be seen to the north east of the cluster at the top of the image.
TS65 Quad Astrograph, Atik314L+ camera
30mins Luminance (Hutech LPS filter)
R,G,B 10 mins each channel
Processed in DSS and PS CS6
Imaged from London on 12th May 2015
Like Sherlock Holmes’s magnifying glass writ large, the NASA/ESA Hubble Space Telescope has been used to peer into an astronomical mystery in search of clues. The enigma in question concerns the globular cluster Ruprecht 106, which is pictured in this image. While the constituent stars of globular clusters all formed at approximately the same location and time, it turns out that almost all globular clusters contain groups of stars with distinct chemical compositions. These distinct chemical fingerprints are left by groups of stars with very slightly different ages or compositions from the rest of the cluster. A tiny handful of globular clusters do not possess these multiple populations of stars, and Ruprecht 106 is a member of this enigmatic group.
Hubble captured this star-studded image using one of its most versatile instruments; the Advanced Camera for Surveys (ACS). Much like the stars in globular clusters, Hubble’s instruments also have distinct generations: ACS is a third generation instrument which replaced the original Faint Object Camera in 2002. Some of Hubble’s other instruments have also gone through three iterations: the Wide Field Camera 3 replaced the Wide Field and Planetary Camera 2 (WFPC2) during the final servicing mission to Hubble. WFPC2 itself replaced the original Wide Field and Planetary Camera, which was installed on Hubble at launch.
Astronauts on the NASA Space Shuttle serviced Hubble in orbit a total of five times, and were able to either upgrade aging equipment or replace instruments with newer, more capable versions. This high-tech tinkering in low Earth orbit has helped keep Hubble at the cutting edge of astronomy for more than 3 decades.
Credits: ESA/Hubble & NASA, A. Dotter; CC BY 4.0