View allAll Photos Tagged Herculescluster
M13 is a large, bright, globular star cluster in the constellation, Hercules. The cluster is a popular telescopic target for visual observers and is spectacular photographically as well. Captured under dark skies near Goldendale, WA.
Telescope: Celestron EdgeHD 8 @ f/7
Camera: QSI 683wsg
Mount: Astro-Physics Mach1 GTO
Integration: ~11 minutes (11 x 1 min) each of RGB
Processing: PixInsight 1.9, Adobe Photoshop
M 13 is 145 light-years in diameter and composed of between 300,000, to more than half a million gravitationally bound stars in the constellation of Hercules.
It’s a spectacular star cluster to see in a telescope with its super bright core of hot blue stars.
Imaged over 2 nights in May 2023 from my home in Gérgal, Spain. Taken during almost a full Moon to test a new mount recently purchased.
A high resolution image with imaging details can be found on my Astrobin page at: astrob.in/full/1moarg/0/
Thank you for looking.
Technical summary:
Captured: 03,04-05-2023
Imaging Sessions: 2
Location: Gérgal, Andalucía, Spain
Bortle Class: 4
Total Integration: 6h 50m
Filters:
Red 48x 91s 1h 31m BIN 2 Gain 100 0C SQM 19.5
Green 73x 60s 1h 13m BIN 2 Gain 100 0C SQM 19.5
Blue 78x 60s 1h 18m BIN 2 Gain 100 0C SQM 19.5
UV/IR 168x 60s 2h 48m BIN 2 Gain 100 0C SQM 19.5
Pixel Scale: 0.27 arcsec/pixel
Telescope: Celestron C11 Edge HD f/10 2800mm
Image Camera: ZWO ASI 6200MM Pro
Guiding: Omegon 60mm 240mm, ASI 183MC Pro
Filters: Astronomik R, G, B, UV/IR
Mount: iOptron CEM120 EC
Computer: Minix NUC
Capture software: NINA, PHD2
Editing software: PixInsight, Adobe Lightroom
M13 The Great Hercules Cluster imaged from London on 29th April 2016
Clestron Edge HD 11 with f6.3 focal reducer, Atik 314L+ camera
15x2mins Luminance, 5x2 mins for R,G & B
Processed in DSS and PS CS6
First light with the QHY128C.
I haven't imaged with the 11" EdgeHD at F/7 in quite some time. The F/7 reducer is very heavy and bulky. Having the full frame sensor of the QHY128C made things more difficult...still have some spacing issues. I haven't used autoguiding in almost 2 years and PhD2 wasn't cooperating with the Orion HDX-110. Switched out to Metaguide and it worked well, but the damage had been done. As a result this image is cropped from its native size(6036x4028) to 4235x2989.
19 Frames x 120 Seconds each
Telescope: 11" Celestron EdgeHD at F/7
Guide Scope: AT65EDQ
Guide Camera: QHY290M
Mount: Orion HDX-110
Camera: QHY128C
Resolution ............... 0.625 arcsec/px
Rotation ................. -43.345 deg
Observation start time ... 2020-05-26 2:00:00 UTC
Focal distance ........... 1970.05 mm
Pixel size ............... 5.97 um
Field of view ............ 44' 7.1" x 31' 8.3"
Image center ............. RA: 16 41 39.191 Dec: +36 28 33.13 ex: -0.000542 px ey: -0.000918 px
Image bounds:
top-left .............. RA: 16 42 06.089 Dec: +36 55 02.38 ex: +0.010761 px ey: +0.004002 px
top-right ............. RA: 16 39 26.695 Dec: +36 24 43.95 ex: +0.004752 px ey: -0.001749 px
bottom-left ........... RA: 16 43 52.203 Dec: +36 32 17.94 ex: +0.000467 px ey: +0.003459 px
bottom-right .......... RA: 16 41 12.851 Dec: +36 02 14.30 ex: -0.008764 px ey: +0.008073 px
M13 The Great Hercules Cluster imaged from London on the 25th May 2020. 1 hour exposure (360 x 10 second subs), increased saturation to bring out star colour.
Celestron Edge HD11 scope & Canon EOS 6D camera.
Introducing the Hercules Globular Cluster aka the Great Globular Cluster in Hercules (Messier 13 or NGC 6205). I haven’t stopped marveling at the thought of so many stars packed into so relatively dense a structure as this. Or even that something like this is possible.
This bright gob o’ light is a globular cluster comprised of several hundred thousand stars in the constellation of Hercules. A globular cluster is a tightly packed group of old stars which are packed closely in a symmetrical form. Globular clusters formed from giant molecular clouds, or huge masses of gas which form from stars as they collapse. Globular clusters are older structures relative to the universe as less free gas is available today for formation of globular clusters than was the case when the universe was denser.
In 1716, English astronomer Edmond Halley noted of the Hercules Globular Cluster, “This is but a little Patch, but it shews itself to the naked Eye, when the Sky is serene and the Moon absent.” To the human eye, under sufficiently dark skies with binoculars, the Hercules Globular Cluster looks like a dim and somewhat hazy star. The Hercules cluster is one of the brightest globular clusters visible in the northern hemisphere and is about 145 light years in diameter (our Milky Way is over 100,000 light years) by way of comparison and is 22,180 light years from earth.
Technical Details:
This photograph was created using a large quantity of individual exposures captured with a telescope, astronomy camera, and an equatorial mount. Processing was done in PixInsight and Adobe Photoshop.
I didn’t capture these exposures with any particular plan in mind. I just had so much data on this target that I went back and used a lot of my best data to create this final image. It would have been sensible to produce this image with one telescope (e.g. the 120 ED) and camera (e.g. 2600MC or 2600MM combining sessions of luminance and RGB). A bright globular cluster also does not require so much integration time.
CEM-70g, Esprit 120 ED + APEX-L, 183MC, N/A
- 2021-01-11, 2021-01-14, 2021-01-15
- 42x10s and 38x30s, Bortle 7-8
CEM-70g, Esprit 120 ED, 2600MM, Astronomik L2
- 2021-02-25, 2021-03-01, 2021-03-05
- 28x10s and 78x30s, Bortle 7-8
CEM-40EC, Esprit 80 ED, 2600MC, N/A
- 2021-03-12, 56x120s, Bortle 7-8
CEM-40EC, Esprit 80 ED, 183MC, N/A
- 2021-04-01, 125x30s, Bortle 7-8
CEM-40EC, RASA-8, 2600MM, Astronomik L1
- 2021-04-19, 86x30s, Bortle 4
CEM-40EC, Esprit 80ED, 2600MM, RTU
- 2021-04-28, 87x60s, Bortle 7-8
CEM-70g, Esprit 120ED, 2600MM, Astronomik L2
- 2021-05-14, 30x60s, Bortle 4
Total Integration Time
6 hours, 44 minutes, 10 seconds
Separate sessions calibrated with darks, flats (typically sky flats), and dark flats. Sessions were stacked, background light gradients extracted, calibrated, and then combined into a few monochrome masters (combined selectively for the best result) and a series of color images used for color.
Photographs captured in Salt Lake City, Utah, and Antelope Island State Park, Utah
Taken w/ Skywatcher Evostar Pro 80 ED (w/.85x reducer/corrector & QHYCCD Polemaster), Skywatcher EQM-35, Nikon D3300.
192 lights x 60 s @ ISO 800, ~45 dark, ~45 flat, ~100 bias, stacked in DSS and post-processed in Photoshop
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.
Like shiny flakes sparkling in a snow globe, over 100,000 stars whirl within the globular cluster M13, one of the brightest star clusters visible from the Northern Hemisphere. Located 25,000 light-years from Earth this glittering metropolis of stars in the constellation Hercules can be spotted with a pair of binoculars most easily in July. 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.
Nella quiete del cielo estivo, M13 risplende come un gioiello incastonato nell'oscurità: una sfera perfetta di stelle, raccolte da una gravità antica e potente. Ogni punto luminoso è una stella che brilla da miliardi di anni — alcune più vecchie del Sole stesso — testimoni silenziosi della giovinezza dell’universo. La simmetria quasi ipnotica dell’ammasso racconta un equilibrio dinamico, mantenuto per ere cosmiche: un'armonia sferica di 300 mila stelle che resiste al caos galattico. Fotografare M13 è come aprire una finestra sull’eternità, osservando una cattedrale di luce che pulsa da oltre 11 miliardi di anni, sospesa a circa 22.000 anni luce da noi.
Telescopio Skywatcher 200/1000, 30 minuti di posa
#M13 #AmmassoGlobulare #GlobularCluster #Astronomia #Astrophotography #CieloProfondo #DeepSky #Telescopio #StelleAntiche #AncientStars #UniverseBeauty #BellezzaCosmica #NightSkyPhotography #AstrofotografiaItaliana #StarCluster #HerculesCluster #PassioneAstronomia #Astrophoto #SymmetryInNature #SpazioProfondo
I took my new filterwheel out for a spin last night!
M13 Hercules Cluster
Tech Stuff: Questar 3.5"/100mm reducer/ZWOASI 533mono/RST 135E unguided/21 min each of R, G, and B 10-second exposures. From my yard in Westchester County, NY.
The Hercules Cluster is a large collection of stars called a globular cluster. Globular clusters are gravitationally bound densely packed groups of stars; it is estimated the Hercules Cluster contains ~300,000 stars. As the name suggests, it is found in the constellation Hercules and is easily visible with binoculars or a telescope. This cluster is ~25,000 lightyears away from Earth and ~145 lightyears across.
I love observing the Hercules Cluster through my telescope as it is one of the brightest globular clusters visible in the northern hemisphere. When I invite the public to view the night sky through my scope it is one of the objects we often look at.
Shot from my backyard near Taos, New Mexico.
Equipment:
SkyWatcher EQ6-R Mount
Nikon 800mm f/5.6 AI-S - shot at f/8
Nikon 1.4x Teleconverter
Sony a7RIII (unmodified)
ZWO 30mm Guide Scope
GPCAM2 Mono Camera
Acquisition:
Taos, NM: my backyard - Bortle 3
55 x 121" for 1 hour 50 min and 55 sec of exposure time.
8 dark frames
15 flats frames
15 bias frames
Software:
SharpCap
PHD2
PixInsight
Lightroom
Photoshop
My a7rIII and adapted Nikon 800mm f/5.6 AI-S lens were mounted to my SkyWatcher EQ6-R mount using a vixen rail. The guidescope/camera were fixed to the front of the rail. I used SharpCap to achieve "excellent" polar alignment. I shot ISO 1600, f/8 with a 1.4x teleconverter, making the focal length 1120mm. I took 121" exposures using PHD2 with my guidescope to keep tracking accurately. I brought the lights/darks/flats/bias frames into PixInsight for stacking and aligning and then used: STF, Cropping, Dynamic Background Extraction, BlurXTerminator, plate solving, color correction, NoiseXTerminator HDR, and then the background of the cluster was separated from the stars using StarXterminator, and both files processed and stretched separately and then recombined using PixelMath. That file was brought into Lightroom for Metadata and EXIF tags, light post-processing, and cropping. I used Photoshop to sharpen the final image.
I took this image with my William Optics FLT132 apo refractor, with the FLAT68III flattener at 910mm focal length and f6.9.
I used the ZWO ASI2600MC Pro and Antlia Triband RGB Ultra filter. AM5 mount and ZWO ASIAir plus. Overall integration time 2h30m with 30s, 60s and 120s subs.
Pre and post processed in PixInsight and Affinity Photo 2.
More integration information in astrobin: astrob.in/bpdtbr/0/
Thanks for looking and clear skies!
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Information on M13:
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"The English astronomer Edmond Halley 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.
M13 contains around 100,000 stars and it's located 25,000 light-years from Earth with an apparent magnitude of 5.8."
Taken w/ Skywatcher Evostar Pro 80 ED (w/.85x reducer/corrector & QHYCCD Polemaster), Skywatcher EQM-35, Nikon D7500.
120 lights x 90 s @ ISO 800, ~45 dark, ~45 flat, ~100 bias, stacked in DSS and post-processed in Photoshop
M13 - The Hercules Cluster.
This is a first light image with my Apertura RC6 Telescope. This was at the telescopes native focal length of 1380mm. It took me a few times to get it colimated right but I am extremely satisfied with the results.
159x120" Lights - 5hrs 18mins of integration time.
Shot in a Bortle 4 skies in North Texas
Globular Cluster Messier 13.
Another "test shot" with the APM LZOS 130/780 + Williams Flattener Combo.
First time usage of Optec's FocusLynx temperature controlled Focusser, which worked great.
Finally, no more manual refocussing during the night :-)
19x10min with EOS 500Da @ISO200
Can resolve more stars with this 8" SCT than with my 3" refractor, both visually and photographically
Hercules Cluster HDR RGB (OSC camera)
Specs:
61x210s
36x60s
@Gain 100 Offset 11 T=-10°C
30 Darks each set
30 Flats each session (3 sessions)
30 Bias (processed in superbias)
SQM 18.7 approx.
Rig:
OTA: Skywatcher 80ED Evostar
Mount: Ioptron iEQ30 PRO
Camera: ZWO ASI 533 MC-PRO
Reducer: Skywatcher 0.85x FF
Guide camera: ZWO ASI 120MC
Guide scope: SW finder 9x50
Filter: Optolong L-Pro
Nearby in our galaxy, this tight cluster contains upward of 300,000 stars. If we could view the sky from a planet within the cluster, the heavens would appear dazzling. So many brilliant stars would be continually visible that there would be no real night.
Oddly, the faint silhouette of a Mercedes Benz logo appears at the lower right (southeast) of the cluster's center.
M13 lies 22,000 light years distant within our Milky Way.
This image was captured under the dark skies of Santa Fe, New Mexico. Telescope: 12" aperture f/8 with an electrically-cooled CCD single shot color camera.
✨ The Hercules Globular Cluster (M13) – Jewel of the North ✨
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www.instagram.com/ale_motta_astrofotografia
Behold M13, the magnificent globular cluster nestled in the constellation Hercules. Home to hundreds of thousands of ancient stars packed into a tight, spherical swarm roughly 22,000 light-years from Earth, this stellar beehive shines at naked-eye limit and bursts into view through binoculars and small telescopes alike.
Gazing upon M13 is like looking back in time—most of its stars were born over 11 billion years ago, long before our Solar System formed. Its densely packed core offers a glimpse into the extremes of stellar evolution, where close encounters and gravitational interactions shape the cluster’s destiny.
📍 Constellation: Hercules
🌌 Distance: 22,000 light-years
✨ Apparent Magnitude: 5.8
📏 Apparent Size: 20 arcminutes
Coordinates: RA 16h 41m 41s | Dec +36° 27′ 36″
Let M13 remind you that even in the darkest reaches of space, ancient light and timeless beauty endure.
Lights: 52x300" (LRGB)
Telescope: Officina Stellare ProRC 700
Camera: FLI PL16803
Filters: LRGB Astrodon
Processed: Pixinsight
Date: 02/04/2021
#HerculesCluster #M13 #GlobularCluster #AncientStars #StellarArchaeology #DeepSky #Astrophotography #NightSky #CosmicWonder #MilkyWayTreasures #SpaceInspiration #StarCluster
Explanation: These are galaxies of the Hercules Cluster, an archipelago of "island universes" a mere 650 million light-years distant. This cluster is loaded with gas and dust rich, star forming, spiral galaxies but has relatively few elliptical galaxies, which lack gas and dust and the associated newborn stars. Colors in the composite image show the star forming galaxies with a blue tint and ellipticals with a slightly yellowish cast. In this cosmic vista many galaxies seem to be colliding or merging while others seem distorted - clear evidence that cluster galaxies commonly interact. Over time, the galaxy interactions are likely to affect the the content of the cluster itself. Researchers believe that the Hercules Cluster is significantly similar to young galaxy clusters in the distant, early Universe and that exploring galaxy types and their interactions in nearby Hercules will help unravel the threads of galaxy andcluster evolution. Text from apod.nasa.gov/apod/ap050427.html
This photo was taken 9,10 may 2011 in village Khlepcha near Kiev, Ukraine.
Equipment: Telescope SW 25012P 1200 mm f/5, Mount WhiteSwan-180, camera QSI-583wsg, Tevevue Paracorr. Off-axis guidecamera Orion SSAG.
LRGB filter set Baader.
L: 12*450 sec, RGB – 6*600 sec. each filter Bin.1
Shooting conditions were not very good: turbulence, wind. Periodically appearing clouds.
FWHM 2.5″ – 3.1″
North at left.
Processed Pixinsight, Fitstacker and Photoshop CS5
-Object Info-
Name: M13
Other names: Hercules Cluster, NGC6205
Type: Globular Cluster
V Mag: 5.8
-Image Info-
Date: May 9, 2010
Location: Florida Tech, Melbourne, FL
Telescope: Ortega .8m
Imager: FLI 1024x1024
CCD Temp: -20 C
Filters: Clear
Exposure: 40 x 45s (30min)
Calibration: 50 bias, 15 dark, 30 flat
Processing: calibrated in IRAF, combined in Maxim DL, post processed in Photoshop
In the image North is up and East is to the left.
Credit: Don Schumacher
Messier 13 (M13), also designated NGC 6205 and sometimes called the Great 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 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.
INTERESTING FACT:
The Arecibo message of 1974, containing encoded information about the human race, DNA, atomic numbers, Earth's position, and other information, was beamed towards M13 to allow it to be picked up by potential extraterrestrial civilizations in the cluster. The message will reach the cluster in 25,000 years.
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 in the constellation of Hercules.
M13 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.
Hercules Cluster - M13
Location: Gytheio Lakonias
Date: 25/05/2009
20 x 5min Light Frames
Scope: Vixen VC200L -@ F 6.4 (1200mm)
Camera: Canon 450D @ ISO 800
Mount: HEQ5 Pro
Sometimes called the Great Hercules Cluster is considered the most spectacular globular cluster in the northern skies. One of the reasons M13 appears so large and bright is that is relatively nearby, about 25,000 light years away. its angular diameter is 23', or approximately 143 light years.
Curious note: In 1974, the Arecibo radio telescope sent a message towards M13 intended to communicate the existence of human intelligence to potential aliens inside the cluster. But, the message will not reach M13 for 25,000+ years and by the time it arrives, M13 will no longer be in the intended place for the message.
I captured this with my William Optics FLT91 with 6AIII 0.8x reducer, ZWO ASI2600MC Pro camera and Astronomik CLS-CCD 2" filter. The image was then cropped to zoom on the cluster.
More details: astrob.in/j46h1n/C/
LATEST VERSION: flic.kr/p/2oKjm3J
Messier 13 / M13 / NGC 6205 / The Great Globular Cluster in Hercules
NGC 6207
The Great Hercules Cluster is the brightest globular cluster in the northern sky and it contains about 300,000 stars. It is about 22,000 light-years away, orbiting the Milky Way, and it is estimated to be 11.65 billion years old. M13 is often compared to M3, another bright northern cluster: flic.kr/p/2oKdnJe
NGC 6207 is an edge-on spiral galaxy about 30 million light-years away. It is visible towards the lower left of M13.
Total integration: 15 hours 24 minutes (924 minutes)
04/02/20: 101 x 120 seconds ISO200
04/03/20: 129 x 120 seconds ISO200
04/09/20: 50 x 120 seconds ISO200
04/22/20: 66 x 120 seconds ISO200
05/02/20: 96 x 120 seconds ISO200
05/04/20: 6 x 120 seconds ISO200
05/12/20: 14 x 120 seconds ISO200
Location: Coral Springs, FL
SQM: 18.18 mag/arcsec^2 (Bortle 8/9)
Camera: Canon T3i (stock/unmodified)
Average camera temperature: 95 F (35 C)
Telescope: Explore Scientific ED80 f/6.0 Apochromatic Refractor (with ES field flattener)
Mount: Orion Sirius EQ-G
Guide scope: Svbony 50mm f/4.0 Guide Scope
Guide camera: Orion StarShoot AutoGuider
Software: N.I.N.A. with PlateSolve2 and PHD2
Pre-processed with PixInsight, processed with PixInsight and Paint.NET
Hercules Cluster (M13), 05/24/2020
This is the Great Cluster in the Constellation of Hercules. It is about 25,00 light years away. There are hundreds of thousands of stars packed into an area 145 light-years in diameter.
I got to do a little imaging while I was up at my friend’s place. It was one of those nights where nothing was going right or easy. Most likely because we where partying and laughing like fools. Astrophotography and bourbon do not mix well. LOL. In fact, I did not think this image would work at all and I almost did not even bother to process it.
Equipment:
RASA 8
CGEM-dx mount
ZWO ASI294MC-Pro
ZWO Asiair
Details:
Location – Ahsahka, ID
Bortle Class 4
60 60-second Lights
60 Darks
60 Bias
40 Flats
Deep Sky Stacker
Star Tools
Lightroom
Photoshop
#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #rasa #celestron #astropixelprocessor #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #m13 #Herculescluster
A fantastic sight in just about any scope, and an amazing object to image. M13 is about 25,000 light-years away, and was the chosen destination for a "Hello, there" message transmitted into space from the Arecibo Radio Telescope in 1974. We might know in 50,000 years whether or not anyone got it.
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.
Imaged from my backyard.
Explore Scientific ED102/Nikon D5300 (Ha mod) with IDAS LPS D-1 filter, w/Stellarview FF/0.80FR.
Light frames at iso 400 for 240 seconds
Total integration of three hours.
Processed in DeepSkyStacker, Startools, and Photoshop
Just a quick one I did last night as I was re-polar aligning the scope after setting back up in my yard (had taken everything out to Big Bend for our trip) ... its not perfect, focus was a bit off on some of the colors, but I was more just testing my alignment before I drift aligned to fine tune it ... but it turned out ok so I thought I would post anyways.
Data:
Camera: Atik 314L+
Scope: Orion EON80ED piggybacked on Celestron CPC800
Guiding: none
Filters: Astronomik L,R,G,B
Exposure: L: 30 x 60s binned 1x1, R, G, B: each 20 x 60s binned 2x2
Capture software: Artemis Capture
Calibration and stacking: Nebulosity
Post Processing: Photoshop CS2
Manually guided exposure using Olympus OM1 @ prime focus of Meade 8" LX10 SCT. Focal length = 2000mm.
Kodak Elitechrome 200ASA film.
2520 seconds (42 min) @ f/10.
Processed in PaintShop Pro 7.0.
My first DSO (deep space object), the Hercules Cluster (m13). Comprised of 20 10sec images (ISO2000) from my 5d3 mounted on my 8in Newtonian.
Details about the stars involved can be found here: nova.astrometry.net/user_images/394330#annotated
Day 247 - #CY365 - Beginning
The great globular cluster in Hercules, about 25,000 light years away, is said to contain over a million stars.
Best viewed large.
Eight 30-second shots at ISO 1600, taken at prime focus with an Orion SVP 80ED, stacked with DeepSkyStacker.
[Edit: Adjusted levels and saturation.]
Grand Amas D'Hercule (M13)
L'amas globulaire M13 regroupe entre 500 000 et un million d’étoiles dans une sphère de 150 années-lumière. Il est âgé de 12 à 14 milliards d’années.
Essai photo le 31/08/2019
Newton SkyWatcher 200/1000 sur N-EQ5
Canon 1300D natif
seulement 19x30" de pose
DOF 20-30-15
Traitement SIRIL + PS
Beaucoup de déchets ++ (vent, vibrations, mauvaise mise en station)
A refaire avec plus de temps de pose