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This is M13 The Hercules globular star cluster 25,000 lightyears from Earth. Located in the constellation Hercules.
3.8 hours with 3 minutes exposures at iso-1250
Taken with Unmodified Canon 60d through an Orion 8” newtonian astrograph with coma correcter, autoguided with a orion starshoot autoguider 60mm guide scope, all on a Celestron AVX mount.
Processing: deepsky stacker for regester, stacking. Pixlinsight: Background ext, noisexterminator, blur terminator, histogram stretch, added mask curves saturations,. Photoshop: selective color adjustments, contrast, shadows & highlights,
Bortel skies 4 Clarksdale Missouri
For a higher resolution click link: app.astrobin.com/u/jb-astro?i=7yzcs3#gallery
Messier M31 - Hercules Globular Cluster
Lens: Sky-Watcher Mak 90 (Telescope)
Mount: AZ-GTe (AZ)
Camera: Canon EOS M5
Frames: Light 12x (~ 15 min)
Processing: Deep Sky Stacker, FITStacker, Lightroom
Location: Moscow region
The Great M13 Hercules Globular Cluster. This cluster contains over 300,000 stars and lies around 25,000 light years away, situated just outside of our galaxy. It is about 11.65 billion years old, making it almost three times older than our Earth.
The 1974 Arecibo message, which contained encoded information about the human race, DNA, atomic numbers, Earth's position and other information, was beamed from the Arecibo Observatory radio telescope towards M13 as an experiment in contacting potential extraterrestrial civilizations in the cluster. The cluster will move through space during the transit time; opinions differ as to whether or not the cluster will be in a position to receive the message by the time it arrives.
Image Details:
- Imaging Scope: Astrotelescopes ED 80mm Refractor
- Imaging Camera: ZWO ASI183MC Color with UV/IR Blocking filter
- Guiding Scope: William Optics 66mm Petzval
- Guiding Camera: Orion Starshoot Auto Guider
- Acquisition Software: Sharpcap
- Guiding Software: PHD2
- Light Frames: 90*90 secs @ 40 Gain, Temp -25C
- Stacked in Deep Sky Stacker
- Processed in PixInsight and Adobe Lightroom
The stars of this spectacular globular cluster are so densely packed they periodically collide with each other and create new stars. The 300,000 or so stars form a distinctive fuzzball in a suburban backyard telescope and contemporary astrophotography techniques resolve gold and blue stars as shown above.
Tech Stuff: Questar 3.5" scope at native focal length 1335 mm (f/15); first light for ZWO ASI 533MC; first light for RST-135E mount. 50 minutes of unguided 4 second exposures, processed in PixInsight. From my Bortle 8 yard 10 miles north of NYC.
M13 First light with the ES 127mm ED Triplet refractor
ASI Zwo 294MC Pro cooled color camera IR/cut filter
Had some clear skies last night
#SharpCap Pro, PoleMaster
Ioptron i45 Pro EQ mount, PHD2 guiding
Orion 60mm guidescope Zwo 120MM mini
120 Gain offset 10, 0c cooling,
M13 was 37 minutes, 1 minute exposure each
Went for 90 frames, due to the size of this telescope, found out the Dec backlash was bad, ended up throwing away 53 frames due to bad backlash, but 37 good ones
25 darks 25 flats and 25 bias frames
Astro Pixel Processor and PS
Telescope: Celestron Edge HD 800 with 0.7 reducer
Camera: ZWO ASI 071MC Pro
Exposure: 40 x 3min @ unity gain -5°C
Filters: IDAS LPS filter
Mount: iOptron CEM60
Location: Beveren-Waas Belgium
Date: 2025/04/27
While I thought we would have clear skies last night, we had some high clouds move overhead constantly. Anyway, grabbed a bunch of two-minute exposures on this amazing globular cluster and I think the result is fine.
M13 lies around 25,000 light years away. The English astronomer Edmond Halley, best known for recognizing the periodicity of the comet that bears his name, discovered M13 in 1714. When Charles Messier added M13 to his catalog in 1764, he was convinced that the nebulous object did not contain any stars at all. Because they are so densely packed together, the cluster’s individual stars were not resolved until 1779. Near the core of this cluster, the density of the stellar population is about a hundred times greater than the density in the neighborhood of our sun. These stars are so crowded that they can, at times, run into each other and even form a new star. The resulting “blue stragglers” appear to be younger than the other stars in their immediate vicinity and are of great scientific interest to astronomers.
Image Details:
- Imaging Scope: William Optics 61mm ZenithStar II Doublet
- Imaging Camera: ZWO ASI183MC Color with UV/IR Blocking filter
- Guiding Scope: William Optics 66mm Petzval
- Guiding Camera: Orion Starshoot Auto Guider
- Acquisition Software: Sharpcap
- Guiding Software: PHD2
- Capture Software: SharpCap Pro (LiveStack mode with dithering)
- Light Frames: 30*2 mins @ 50 Gain, Temp -16C
- Dark Frames: 30*2 mins
- Stacked in Deep Sky Stacker
- Processed in PixInsight, Adobe Lightroom and Topaz Denoise AI
Optics: GSO RC 10" F8 2000mm - Astrograph Ritchie-Chrétien
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: QSI 640 WSG
Filters: Astrodon LRGB I Series Gen II
Guiding Systems: SXV-AO-LF Active Optics - SX Lodestar
Dates/Times: 19/20/21 June 2014
Location: Pragelato - Turin - Italy
Exposure Details: L:R:G:B => 60:25:25:25 = > (12x5):(5x5):(5x5):(5x5) [num x minutes]
Cooling Details: -25°C
Acquisition: Maxim DL/CCD, TheSkyX, Voyager
Processing: CCDStack2+, PS CS5, PixInsight
Mean FWHM: 1.54" / 2.73"
SQM-L: 21.01 / 21.34
Messier 13 is a globular cluster of several hundred thousand stars in the constellation of Hercules. It was discovered by Edmond Halley in 1714, and cataloged by Charles Messier on June 1, 1764, About 145 light-years in diameter, M13 is 22,200–25,000 light-years away from Earth. Single stars in this globular cluster were first resolved in 1779. Compared to the stars in the neighborhood of the Sun, the stars of the M13 population are more than a hundred times denser. They are so densely packed together that they sometimes collide and produce new stars.
Camera: Moravian G2 8300
Filters: 31mm unmounted Optolong
Optic: Televue 102 f/7
Mount: Ioptron CEM60 HP
Autoguider: camera Magzero 5m on SW 70/500, Phd guiding
Frames: RGB: 5X420sec each - Bin1 -20°
Processing: Pixinsight, Photoshop
A picture of M13, a globular cluster I took last week (5hr 20min total exposure.) It is roughly 300,000 stars, about 25,000 light-years away, but still within our galaxy. It's just barely visible with the naked eye, in a dark sky.
I show it off-center to illustrate a couple more galaxies in the shot. Off to the right is NGC6207-- 37 million LYs away from us. And to the lower right is IC 4617. The light from this distant object was emitted by the galaxy 489 million light-years ago, and then was captured by my camera last week, to show you.
M13 Globular Cluster
Distance from land: 25100 a.l.
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 also visible to the naked eye.
M13 has an 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, the brightest of which is 11.95 magnitude. Around its core, the 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. Appearing so bright at such a great distance, its real brightness is very high, over 300,000 times that of the Sun.
The radial speed is approximately 250 km / s on approach. This motion results from the combination of three different speeds: the rotation of the Galaxy, the motion of the Sun in space, and the revolution motion of the cluster around the galactic center.
12 "Truss RC telescope reduced to 1790
Celestron 80/600 guide tube with Asi Zwo 224
Moravian G2 8300 camera with internal wheel
Ioptron Cem120 mount
Moonlite focuser and 3.5 "electronic rotator
Electronic temperature control and anti-condensation bands
Cls ccd, R, G, B, Ha 6nm filters, all Astronomik
Shooting data:
41 x 180s ccd cls
71 x 30s ccd cls
21 x 180s R
21 x 180s G
21 x 180s B
Processing: Pixinsight, Photoshop, star spikes, astronomy tools
More info: www.galactic-hunter.com/post/m13-the-great-globular-clust...
This was taken with the Orion 8” Astrograph, the QHY 128C camera and the Paramount MyT mount doing 30 second exposures for a total of 1 hour and 45 minutes. It took 4 hours and 40 minutes just to stack ☠️
It was pretty difficult to process because I did not take flats and did not use an IR cut filter so the bright core yielded some pretty bad halo all around the center of the image. I just bought an IR cut filter so hopefully I don’t run into that problem again in the future.
50 frame di 5 minuti +25 da 15 secondi e altri 25 da 5 secondi per avere visione delle stelle che occupano il centro globulare, CCD QHY 183C sensore sempre a -15 , sub frame:50 dark,20 flat e 20 dark dei flat.
telescopio di ripresa FS60 CB +riduttore di focale, autoguidato con PHD con Orion Stashoot su piccolo rifrattore 70/300, montatura AZEQ6 GT, processing Pxisinsight con HDR, elaborazione finale Photoshop CC 19 Detail3 e Glow2 con Topaz Labs. aggiunti piccoli spike stellari con Star Spike 4 Pro.
M13 globular cluster in Hercules, and many faint visible galaxies around
As imaged yesterday with Esprit 150ED / D810a (unfiltered) / Mesu 200
140 minutes exposure
SQM around 18.8 - 19.8
Instagram account: Eliekhopter
Facebook account: Libanass (Elie Kheirallah)
The brightest globular cluster in the northern hemisphere in Hercules is always challenging to image. This cropped Nikon d3500, Nikkor 180 mm f/2.8 @ f/5.6, iso 1600, 74x30s exposure under clear but hazy skies is a bit noisy but shows and hints at a lot of stars. Used unguided Astrotrac mount. Taken during evening of 22 May 2019.
Picture of the Day
British Astronomical Association Picture of the Week 14 March 2020
Messier 13, a globular cluster of hundreds of thousands of stars, in the constellation Hercules. It is around 24,000 light years from earth, and approximately 145 light years in diameter.
Imaged during a full moon.
Astrodon Blue: 12x300"
Astrodon Green: 15x300"
Astrodon Red: 15x300"
Astrodon Luminance: 71x300"
Total Integration: 9.4 hours
Captured on my dual rig in Spain.
Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length)
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.
10s x 6 @300mm
A misty moonlit night was a poor time to try RGB, imaging but without any nebulae in my part of the sky at that time i decided to give it a shot, i chose a star cluster for 2 reasons - bright enough to show up in short exposures, and wouldn't require much stretching during post-processing.
Simple RG and B (no luminance) 2min x 10 subs per filter. with darks.
Je vous présente un objet relativement intriguant que l'on appelle amas globulaire, ces objets sont un regroupement de milliers d'étoiles. Ils orbitent en dehors de notre galaxie et ont les plus veilles étoiles (10 milliards d'années), on en répertorie 158 mais il en existe probablement plus.
Voici les détails de la photo :
Matériel :
Télescope de type Newton Orion 200/1000
Monture Orion Atlas EQ-G
Caméra Omégon Vetec 533C
Guidage :
Chercheur 9X50
Caméra QHY 5 Lii
Image :
25 poses de 5 minutes retenues sur 98 (beaucoup de déchets à cause du vent)
Traitement :
Siril + Photoshop
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.
Equipment
Skywatcher NEQ6 Pro
William Optics Z73
Altair Astro Hypercam 183m V2
Luminosity Filter
40 x 30sec = 20 minutes
First imaging session of the year for me, took this at the end of the night as I still had some time after my other targets. Taken from Bishopbriggs, Scotland. Bortle 8.
Skywatcher Esprit 80ED, ASI294MC with L-Pro Filter. Guided on a CGX mount. Processed with Pixinsight, touched up in Lightroom.
Technical Info:
Optics: GSO 6" f/4 Imaging Newtonian @ 610mm FL
Explore Scientific 2" HR Coma Corrector
Camera : Canon t3i (Astro Modified)
Filters: None
Mount: Losmandy GM8
Guiding: None
Acquisition: Sequence Generator Pro via Plate Solving
Exposure: Light (ISO 800) - 12 subs @ 20 seconds
Calibration: Darks only
Processing : Sequator, Photoshop, PS Astrotools, Astroflat Pro
astrocamp.eu/en/hercules-globular-cluster-may25/
▼ Vixen VC200L | Canon EOS R(a) '25
In late May, I captured the Hercules globular cluster M13, about 25,000 light-years away. The image also includes the galaxy NGC 6207 and several faint background galaxies. For this session, I used my Vixen VC200L telescope and a Canon EOS R(a) camera. Good seeing and accurate tracking helped reveal the cluster’s dense star population.
M13 with the Kitcat 135mm Rokinon lens
Zwo ASI071MC Pro cooled mono camera
Pegasus EAF, 10X7 degrees FOV
Had clear skies last night, Full moon
Zwo 2" IR/cut filter
#SharpCap Pro, PoleMaster
Orion Skyview Pro EQ mount
100 Gain offset 20, 0c cooling,
M13 was 1 1/2 hours, 30 seconds exposure each
60 darks 60 flats and 60 bias frames
Astro Pixel Processor and PS
Messier 13, the so called Great Globular Cluster in the constellation Hercules consists of some hundred thousand stars. Its distance from earth is about 22,000 lightyears. The diameter of M 13 is about 150 lightyears..M13 was the target for the Arecibo message mankind sent into space from the Arecibo radio telescope in 1974 . The spiral galaxy NGC 6207 is also in the field of view (far left).
ZWO ASI1600mmpro on a TS 130/910 mm Apo.
75 x 60s Baader red gain 76
68 x 60s Baader green gain 76
61 x 60s Baader blue gain 76
Astro Pixel Processor and PS CC 2019
3454mm/F6.8 astronomical telescope
Apogee F16M cooled CCD
total exposure time = 3 hr
see www.astrobin.com/ol4syq/ for more technical details.
2026 Apr. 8
Celestron Edge HD800+Reducer 0.7 ASI2600MC-P, ASI Air plus, EQ6-R Pro
PixInsight, Photoshop
I've been trying for years to get a decent globular cluster image that really depicts the "globular" and dense inner structure. This image gets me there! This data was collected last month, but the new version of BlurXTerminator (v4) has really done the cluster justice! It did a very nice job of working with star sizes to bring out that true view of this amazing star cluster.
This cluster lies just outside of our Milky Way galaxy at a distance of around 25,000 light years away and contains around 300,000 stars!
Image Details:
- Imaging Scope: Celestron C8 SCT
- Imaging Camera: ZWO ASI183MC Color with ZWO IR cut filter
- Guider: Celestron Starsense Autoguider
- Mount: Celestron CGEM
- Acquisition Software: Sharpcap
- Guiding Software: Celestron
- Capture Software: SharpCap Pro (LiveStack mode with dithering)
- Light Frames: 30*1 min @ 100 Gain, Temp -20C
- Dark Frames: 30*1 mins
- Stacked in Deep Sky Stacker
- Processed in PixInsight, Adobe Lightroom, and Topaz Denoise AI
Complete reprocessing.
M13 photographed during 2 consecutive nights.
Telescope: TEC140
Camera: QSI583WS
Luminance: 19x300 and 10x600
R,G,B: 12x300 each
The great globular cluster in Hercules
Tried some imaging with my 6" SCT tonight at 1500mm, and it's definitely a bit trickier. This is a stack of a few hundred 20 sec exposures
M: iOptron EQ45-Pro
T: William Optics GTF81
C: ZWO ASI1600MC-Cooled
F: No Filter
G: PHD2
GC: ZWO ASI120mini [OAG]
RAW16; FITs
Temp: -15 DegC
Gain 200;
25 x Exp 15s
Frames: 25 Lights; 50 Darks; 50 Flats
60% Crop
Capture: SharpCap
Processed: APP; PS
Sky: No moon, calm, 30%cloud, mild, good seeing.
M13, the Great Globular Cluster in Hercules is a globular cluster formed of hundreds and hundreds of thousands of stars. These stars aren't like our sun, but over a hundred times denser.
I processed this image using data from the HLA (NASA/ESA Hubble). This is obviously a target where the main challenge lies in the capture, so with HST data it was rather easy to process. Still, I tried to produce a decent version. Better at full screen. Hope you like it!
M13 was discovered by Edmond Halley in 1714,it is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.
Date of shoot: 24/4/14, 27/4/14, 30/4/14
L: 10 subs at 60s 1*1 , 28 subs at 300s 1*1
RGB: 10 subs at 40s 2*2 , 12 subs at 180s 2*2
Camera Starlight Express SXVR-H694
Sample Rate 0.98 asp at 1*1 , 1.97 asp at 2*2
Filter Wheel : Starlight Express Mini Wheel
Mount : Avalon fast Linear
Scope: Orion Optics UK AG10
Filters : Astrodon LRGB