View allAll Photos Tagged Starcluster
An unguided image of the open star cluster M36 in Auriga taken with a Canon 7D MKII using a Canon 400mm f/5.6 lens on a Celestron AVX equatorial mount. Created with Deep Sky Stacker, Lightroom, and Photoshop Elements using 15 images and 5 dark files.
Nikon D5300 + Zenithstar 73
iOptron CEM26 + iPolar
SVBony CLSfilter
ZWO ASI224MC + WO Uniguide 120mm
40 x 3min : Exp 2h -- ISO 400
AstroM1
(r3.2)
Taken w/ William Optics Redcat 51, QHYCCD Polemaster, Skywatcher EQM-35, Nikon D7500.
185 x 90s lights @ ISO 800, ~45 dark, ~80 flat, ~100 bias, stacked in DSS and post-processed in Photoshop
This is the region of central Cassiopeia containing a rich assortment of deep-sky objects: The so-called Ghosts of Cassiopeia nebulas at top, the Owl Cluster, aka the ET Cluster, at bottom, and the Pacman Nebula at right.
The Ghosts of Cassiopeia are the magenta/cyan reflection and emission nebulas officially called IC 59 and IC 63. Both are reflecting the light of bluish Gamma Cassiopeiae, aka Navi. The "Ghost" name for these objects is a recent appellation. See apod.nasa.gov/apod/ap191025.html
The star cluster at bottom is NGC 457, with smaller NGC 436 above it. It is variously called the Owl Cluster or the E.T. Cluster. The emission nebula at right is the Pacman Nebula, NGC 281, below the stars Eta (Achird) and Alpha (Schedar) Cassiopeiae. The blue star at far left is Delta Cassiopeiae, aka Ruchbah. It along with Gamma and Alpha form the middle three stars of the W of Cassiopeia. The field here is 7.5° x 5°, similar to binoculars.
This is stack of 8 x 16-minute exposures through an IDAS NB1 nebula filter to bring out the faint nebulosity, blended with a stack of 15 x 8-minute exposures with an Astronomik UV/IR Cut filter for a white light normal colour image. All with the Canon Ra (at ISO 1600 for the NB1 filter shots and at ISO 1000 for the normal shots) through the SharpStar EDPH 61mm refractor at f/4.5.
All stacking, alignment and blending with Photoshop. No LENR or darks applied, just inter-frame dithering to eliminate thermal noise specks which were prominent in the long high-ISO filtered shots. Autoguiding and dithering was with the MGEN3 stand-alone autoguider. Faint nebulosity was brought out with luminosity mask adjustments with Lumenzia.
If you look at this part of this sky visually with a telescope, all you see is the open star cluster at the center. Taking a picture with a hydrogen-alpha filter and a CCD camera reveals a lot more. There is an emission nebula associated with the star cluster, and there are many dark molecular clouds in the foreground. Those are regions where new stars are forming. I think one bears a resemblance to the Loch Ness monster or some long necked dinosaur.
Taken from my backyard in Long Beach, CA with a Celestron Edge HD 925 at 535 mm focal length with Hyperstar. An Atik 414-EX mono CCD camera was used with an Atik H-alpha filter and Optolong RGB filters. Most of the detail comes from the H-alpha filter with the RGB filters helping to get the star colors correct.
Hα filter - 42 240 s exposures
R filter - 72 45 s exposures
G filter - 61 45 s exposures
B filter - 55 45 s exposures
Preprocessing in Nebulosity with dark, bias, and flat frames; stacking, channel combination, and initial processing in PixInsight; final touches in Photoshop. It took a lot of work in PixInsight to get the right color mapped to all the detail in the nebula, but I think I found a combination that works.
North is at the left and west is at the top in this image.
A final reprocessing of these data ... one day I'll reshoot this and get more exposure.
Thoughts ?
100, f/5.5
5D2, ISO 1600.
19x6min (1.9hr)
2016.02.26
The Milky Way through the Perseus to Auriga area, populated by clusters and nebulas of the next spiral arm out from ours, in the Perseus Arm. The Double Cluster is at right, with the Heart and Soul Nebulas above it, while the Auriga clusters and nebulas are at left. At bottom is the California Nebula and Messier 34 cluster. The Perseus OB Association of hot blue stars is at centre. Capella is the bright star at upper left. The Taurus Dark Clouds are at lower left.
This is a stack of 8 x 3-minute exposures with the 35mm Canon lens at f/2.8 and Canon EOS Ra at ISO 800. 4 shots were through the NISI Natural Night light pollution reduction filter and 4 were through the Hoya Red Enhancer filter, taken as part of testing. An additional exposure through the Kenko Softon filter adds the star glows. Taken from home on a very clear night, December 29, 2019 on the iOptron SkyGuider Pro.
* Setup:
Telescope: Refractor Orion ED80
Focal Length: 600mm
Camera: QHY163M
Mount: Veronica CEM
Filters: LRGB Optolong
*Exposure:
L: 2 hours (subs 300s) bin1x1
R: 0.5 hours (subs 120s) bin2x2
G: 0.5 hours (subs 120s) bin2x2
B: 0.5 hours (subs 120s) bin2x2
Total: 3.5 hours
This is NGC 457, the ET or Owl Cluster in Cassiopeia. The small cluster NGC 436 lies above the Owl. A faint planetary nebula, Simeis 22, is to the left, but is barely recorded here in these short unfiltered exposures. The field contains quite a few yellow giant stars.
This is a stack of 12 x 3-minute exposures, stacked to average out the many satellite trails that appeared on the sub-frames. This was with the Starfield Géar90 apo refractor at f/4.8 with its Reducer/Flattener, and Canon Ra at ISO 1600. Autoguided and dithered with the Lacerta MGEN3 autoguider.
This is a portrait of the winter sky rising in the southeast on January 9, 2021, taken from home in Alberta. I added labels to this version.
The constellation of Orion is at centre with blue-white Sirius in Canis Major below and reddish-yellow Aldebaran in Taurus above. Castor and Pollux in Gemini are at left. Procyon in Canis Minor is between the Castor-Pollux pair and Sirius. Bright star clusters flank the scene, with the Pleiades (M45) at top and the Beehive Cluster (M44) at far left. Several other smaller star clusters in and along the Milky Way are also visible, even at this scale with an ultra-wide lens.
This is a stack of 10 30-second tracked exposures with the 15mm Venus Optics Laowa lens at f/4 on the Sony a7III at ISO 6400. and taken as part of lens testing this night.
An image of the Double Cluster in Perseus taken using a Rokinon 135mm f/2 lens on a Canon T3i astro-modified dslr camera.
Comet Leonard a.k.a. C/2021 A1
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This comet was discovered abt 4 years ago, on January 3, 2021, by astronomer Greg Leonard. As general information, Comet Leonard has a core of 1km in diameter and travels at a speed of about 250,000 km / h (70 km / sec). On December 12, 2022, it reached the closest point to Earth, at just over 30 million km, and on December 17, 2022 it passed about 4 million km from Venus.
I took this image using a small telescope, when Comet Leonard was crossing the constellation Canis Venatici and it was near star cluster Messier 3.
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Equipment and settings:
Mount: SW EQ6R
Telescope: SW 72ED
Camera: ASI 533 MC Pro
Total exposure: 90 min
Location: my Bortle 6+ backyard
Orion Arm of the Milky Way over Buffalo and Red Mountain of the Gore Range: Summit County, Colorado. www.danielmcvey.com Sharing is Apprecaited.
This is a portrait of the main glowing nebulas amid star clusters in central Auriga, the Charioteer.
The main nebula at right is the Flaming Star Nebula, aka IC 405. But in this long exposure its mass blends into the central roundish nebula, IC 410. At top left is the pair of Sharpless nebulas, Sh 2-232 and the small Sh 2-235. The fingerlike nebula at top centre is Sh 2-230. The star cluster just to its left is Messier 38, with the small cluster NGC 1907 just below M38. The star cluster at left centre is Messier 36. At centre frame is the nebula IC 417 around the cluster Stock 8. The line of colourful stars at lower right between IC 405 and IC 410 is the Little FIsh or Flying Minnow asterism, aka Mel 11.
This is a stack of 6 x 8-minute exposures at ISO 3200 through an Optolong L-Enhance dual-band nebula filter, blended another filtered set of 6 x 16-minute exposures at ISO 3200 with the Optolong L-eXtreme narrowband filter, all blended with a stack of 6 x 8-minute exposures without a filter (for more natural star colors and the blue reflection nebula in IC 405) at ISO 800. All with the Canon EOS Ra camera through the f/5 51mm William Optics RedCat astrograph with a Starizona filter drawer. Autoguiding was with the Lacerta MGEN3 autoguider which applied a dithering shift between each frame to help cancel out thermal noise when stacking. No darks or LENR were used here on this mild winter night at -5° C or so.
All stacking, alignment and blending was in Adobe Photoshop 2021. Luminosity masks (DM2, D and M) applied with Lumenzia helped bring out the faint nebulosity. The set was taken as part of testing the L-eXtreme filter to determine its effectiveness in bringing out more nebulosity. It did not contribute much to this stack and required even more exposure time that would have been better spent taking more unfiltered and L-eNhance frames.
I don't usually have this good of a view of the southern parts of Scorpius. I took a trip to some dark skies near Julian, CA in hopes of getting a good shot of this desert critter constellation. Though there is still a bit of a light dome to deal with from the south, this is the best view I have had of the Scorpion's tail in a while.
Stack of 16 exposures that are about 2 minutes each at ISO 3200 with a Nikon D80. Tracking was done with an omegon MiniTrack LX2, which left the blurred remains of some local flora in the lower left of the image. Most of the work was done in PixInsight, with a little cleanup of gradients in Photoshop.
A short exposure image taken with a ZWO ASI120MC planetary camera using an Explore Scientific 102ED refracting telescope. The image shows half of the Double Cluster in Perseus known as NGC 869 or h Persei.
***Please be sure to view Large on Black (click on the picture or press L for lightbox) in order to best see the Andromeda Galaxy details***
A view of the Andromeda Galaxy from Merrit Reservoir shows just how low the light pollution is in this part of Nebraska. Small light domes from Valentine and surrounds show up on the horizon here, but I have found very few locations dark enough for Andromeda to be so visible. They have a pretty famous star party here every year for astronomy fans, I can understand how it got so popular now. Wow!
This Hubble Picture of the Week shows Messier 28, a globular cluster in the constellation of Sagittarius (The Archer), in jewel-bright detail. It is about 18 000 light-years away from Earth.
As its name suggests, this cluster belongs to the Messier catalogue of objects — however, when astronomer Charles Messier first added Messier 28 to his list in 1764, he catalogued it incorrectly, referring to it as a “[round] nebula containing no star”. While today we know nebulae to be vast, often glowing clouds of interstellar dust and ionised gases, until the early twentieth century a nebula represented any astronomical object that was not clearly localised and isolated. Any unidentified hazy light source could be called a nebula. In fact, all 110 of the astronomical objects identified by Messier were combined under the title of the Catalogue of Nebulae and Star Clusters. He classified many objects as diverse as star clusters and supernova remnants as nebulae. This includes Messier 28, pictured here — which, ironically, is actually a star cluster.
Messier’s mistake is understandable. Whilst Messier 28 is easily recognisable as a globular stellar cluster in this image, it is far less recognisable from Earth. Even with binoculars it is only visible very faintly, as the distorting effects of the Earth’s atmosphere reduce this luminous ancient cluster to a barely visible smudge in the sky. One would need larger telescopes to resolve single stars in Messier 28. Fortunately, from space Hubble allows Messier 28 to be seen in all its beauty — far more than a faint, shapeless, nebulous cloud.
Credits: ESA/Hubble & NASA, J. E. Grindlay et al.; CC BY 4.0
Messier 7 Ptolemy's cluster.
This is one of my favorite star regions to image, situated between Sagittarius & Scorpius, Its a cluster of young hot blue stars that contrast really beautifully with the dense milky way star field.
The globular cluster Messier 13 (M13) in Hercules, with the small galaxy NGC 6207 above it. The very tiny galaxy IC 4617 is just visible between NGC 6207 and M13. M13 is generally considered the finest globular cluster in the northern half the sky (north of the celestial equator).
This is a stack of just two images, each 6 minutes at ISO 800 with the Canon EOS Ra and Astro-Physics EDF 130mm f/6 apo refractor with the 6x7 field flattener. The images were the last two in the sequence of 10, and were the sharpest of the set. Earlier images were softer due to poorer seeing?
An unguided image of The Wild Duck Cluster (M11) in Scutum taken with SharpCap using a ZWOASI183MC Pro camera attached to a Celestron 130mm f/5 reflecting telescope. Fifty 20 second images were combined and processed using DeepSkyStacker, Gimp, and Lightroom.
الثريا هي عنقود نجمي يتألف من حوالي ٥٠٠ نجم و يقع في كوكبة الثور و على بعد ٤٤٠ سنة ضوئية. و كان العرب يستخدمونها في قياس حدة البصر، حيث ممكن رؤية ستة او سبعة نجوم منها بالعين المجردة. و كما تعد الثريا، سديم انعكاسي وذلك لوجود سحب من الغبار تعكس ضوء النجوم الساخنةالمحيطة لتضيئ باللون الازرق. و تكون النجوم الزرقاء اكثر سخونة من باقي النجوم حيث انها اسخن من الشمس بعدة اضعاف. Pleiades M45 or the “Seven sisters” is an open star cluster containing about 500 stars in the constellation Taurus. Six or Seven of these stars can be seen by the naked eye. The blue clouds around stars are called Reflection nebulae. They are composed of interstellar dust that reflect the light of the nearby extremely hot blue stars which are hotter than our Sun. Its distance from Earth is around 440 light year. Gear Setup: WO 73 Zenithstar, iOptron GEM 45 Guided by ZWO Mini guide scope, No filter, ZWO 533MC @ -10. Captured by Sharpcap pro, APT, PHD2, stacked & Calibrated in APP, Processed i PI. Total integration is 2 hours, 60 x 120sec subs. For more image details, visit my astrobin page: www.astrobin.com/full/bvqhk2/0/
This frames most of the constellation of Perseus, emphasizing the bright and dark nebulas within it, as well as the star clusters in and around the constellation suitable for binoculars or a telescope.
At top is the IC 1805/1848 complex known as the Heart and Soul Nebulas. At lower left is a small emission nebula NGC 1491. Beside it are the star clusters NGC 1528 and 1545. At lower centre is the Messier cluster M34, while over the border in Andromeda is the large and loose star cluster NGC 752, at lower right. Algol is the star at bottom centre. At lower left is Mirfak surrounded by the Perseus OB Association of young blue stars. At top centre is the famous showpiece, the Double Cluster. The Milky Way is streaked with yellowish dust clouds, contrasting with the bluer sky off the Milky Way at right. The most prominent dark nebula is from the Barnard Catalogue, B8/B11, at far left.
This is a stack of 27 x 3-minute exposures with the Canon RF28-70mm lens at 50mm and at f/2.8, on the Canon EOS Ra camera at ISO 1600, on the Star Adventurer Mini tracker. Shot with an URTH Night light pollution filter. Taken from home October 7, 2021. Luminosity mask adjustments applied with Lumenzia. A mild Orton glow added with Luminar AI.
M45, the Pleiades star cluster, in a series of exposures to test stacking images with HDR techniques within Adobe Camera Raw..This is a demonstration of stacking a set of different exposures from short to long, to preserve details in the bright areas while bringing out the faint regions of the nebulosity, and done by using the High Dynamic Range merge function now in Adobe Camera Raw...I shot the cluster in a series of 1, 2, 4, and 8 minute exposures, four of each exposure, all using the Nikon D750 and 92mm TMB refractor. A set of 1,2,4, and 8 minute exposures was stacked in Camera Raw using its HDR mode to create a new merged DNG file. I did this for four sets of 1 to 8 minute exposures, then processed each of the HDR stacks with Shadows and Highlights in ACR to bring out faint detail but retain detail in the bright core. Each of the 4 HDR stacks was then mean combined stacked in Photoshop and processed with Curves, S&H, B&C etc. So in total this is a stack of 16 images, 4 each x 1, 2, 4, and 8 minutes. Diffraction spikes added in Photoshop with Astronomy Tools actions...I think it turned out rather well!
An unguided image of the globular star cluster M5 in Serpens taken with a ZWOASI183MC camera through a 130mm f/5 reflecting telescope and processed using DeepSkyStacker and Lightroom.
The Eagle Nebula is an emission nebula and open star cluster in the constellation Serpens.
Captured under dark skies near Goldendale, WA.
Telescope: William Optics ZenithStar 100mm f/7
Focal Reducer: Astro-Tech 0.8x
Camera: Modified Canon 450D (XSi)
Mount: Astro-Physics Mach1 GTE
Integration: 50 mins (10 x 5 mins)
Software: PixInsight 1.8.8, Adobe Lightroom
8/20/2023 USC campus, Columbia, SC
Nikon D3400, Nikon AF-S DX VR Zoom-Nikkor 18-105mm f/3.5-5.6G ED
© 2023 R. D. Waters
The large Hyades star cluster, at right, plus orange Aldebaran, and the smaller star cluster NGC 1647 at left, in Taurus, and in the moonlight of a first quarter Moon, January 2, 2020. Thus the blue sky.
This is a stack of eleven 2-minute exposures with the 200mm Canon lens at f/2.8 and Canon EOS Ra camera at ISO 400, with one of the exposures taken with haze in the sky to add the natural star glows. No filter was used here. The camera was on the Sky-Watcher Star Adventurer tracker. Diffraction spikes added for aesthetic effect with Astronomy Tools Actions.
Pollinating Egyptian Starcluster (Pentas lanceolata). Alice Keck Memorial Garden. Laowa 100mm f/2.8 2:1 Ultra-Macro
Open Star Cluster (M41)
02-01-2017
Hyderabad (India)
taken from light polluted city area.
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the Canis Major constellation. It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known to Aristotle about 325 BC. It contains about 100 stars including several red giants, the brightest being a spectral type K3 giant of apparent magnitude 6.3 near the cluster's center, and a number of white dwarfs.The cluster is estimated to be moving away from us at 23.3 km/s. The diameter of the cluster is between 25 and 26 light years. It is estimated to be 190 million years old, and cluster properties and dynamics suggest a total life expectancy of 500 million years for this cluster, before it will have disintegrated.
280 images of 2.5s each has been stacked together and further processed in PS.
Canon700D
250mm
Untracked, Simple tripod.
Comey Lovejoy, C/2014 Q2, nearest the Pleiades star cluster, Messier 45, on the night of Sunday, January 18, 2015, with its blue ion tail almost passing over the cluster. This is a stack of 6 x 2 minute exposures at f/2.5 with the 135mm lens and Canon 5D MkII at ISO 1600, on the Sky-Watcher Star Adventurer tracker. Taken from City of Rocks State Park, New Mexico, Some haze was passing thru this night but this is a stack of the cleanest frames.
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Nikon D4 + 14-24mm f/2.8G | Yellowknife, Canada, 22 Sep 2014
© 2014 José Francisco Salgado, PhD
Do not use without permission. 2014.09.22_58041
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Aldebaran and the Hyades
Credit: Giuseppe Donatiello
The Hyades (also Melotte 25 or Collinder 50) is the nearest open cluster to the Solar System at a distance of ~153 ly (47 pc) to the cluster center. The cluster consists of a roughly spherical group of hundreds of stars sharing the same age, place of origin, chemical content, and motion through space.
From the perspective, the Hyades Cluster appears in Taurus, where its brightest stars form a "V" shape along with the still brighter red giant Aldebaran. However, Aldebaran is unrelated to the Hyades, as it is located much closer to Earth.
A framing of the northern spring constellations of Leo (at right) and Coma Berenices (at left), the latter marked by the large star cluster Melotte 111. The small and obscure constellation of Leo Minor is at top right.
This is a stack of 10 x 2-minute exposures with the Canon RF28-70mm lens at 34mm and f/3.5 and on the filter-modified (by AstroGear) Canon R camera at ISO 800, on the Star Adventurer tracker. An additional single 2-minute exposure through a Kase/Alyn Wallace StarGlow filter and layered and blended in Photoshop added the photogenic star glows, to accentutate the constellation patterns and star colours. Taken from home March 16, 2023.
The large star cluster in Coma Berenices known officially as Melotte 111, at right, with two of the most prominent galaxies in Coma at left: NGC 4559 at top and the Needle Galaxy, NGC 4565, at bottom. Several other fainter galaxies are in the field, including NGC 4494 between the Needle Galaxy and the star cluster, but looking very star-like at this image scale.
I shot this April 11, 2021 on a fairly clear night as a test of the new SharpStar 94mm EDPH refractor telescope and its matching field flattener/reducer. A bit of passing haze added a touch of star glows.
This is a stack of 20 x 6-minute exposures at ISO 800 with the Canon EOS Ra, autoguided on the Astro-Physics Mach 1 mount with the Lacerta MGEN3 stand-alone autoguided set to dither 5 pixels between each exposure. No dark frames or LENR were applied. The field of view is about 3.3° x 5°.
I'm such a beginner to astrophotography and there are so many things to remember that I forgot to take a dark frame to eliminate hot pixels so had to do them by hand.
I took 8 photos at 90 seconds each using the 5D4 and 70-200mm lens at 200mm. A Sky-watcher Star Adventurer was used for tracking. I used the free software program Sequator to stack the images. Talk about dipping one's toe in the water - I haven't much clue and it's a huge learning curve.
The Coathanger star cluster and asterism in the Milky Way in southern Cygnus, aka Collinder 399 or Brocchi’s Cluster. The field is similar to what a pair of large binoculars would show. I shot this from home Nov. 25, 2019.
This is a stack of 6 x 2-minute unguided exposures with the 200mm Canon telephoto at f/2.8 and stock Canon 6D MkII at ISO 1600. An additional exposure taken through the Kenko Softon A filter adds the star glows. All were with the camera on the Fornax LighTrack II tracker.
Brocchi's Cluster (Cr 399)
Credit: Giuseppe Donatiello
This asterism (not a real star cluster) is made up of 10 stars from 5th to 7th magnitude which form a "coathanger".
Brocchi’s Cluster is listed in many texts as having been discovered by Italian astronomer Giovanni Battista Hodierna in 1654, and it is named for American amateur astronomer Dalmero Francis Brocchi, who created a map of it in the 1920s. However, the first recorded unaided eye sighting was by famous Persian astronomer ’Abd al-Rahman al-Sufi in 964.
Under a dark sky can be seen at the naked eye.
127ED@600mm / EOS4000D + Avalom m-zero Obs (FoV 1.4°x2.0°)
Comet 46P/Wirtanen close to the Pleiades (M45) on 16 December 2018 (imaged from Southern Africa, after a thunder shower and in between clear gaps in partly cloudy conditions).
I kept the exposures a bit shorter than I would have liked, and rather pushed the ISO a bit higher due to the cloud cover that was increasing. Luckily it was clear towards the North for just long enough to take the series of photos required for stacking, and despite the weather, the Astronomical Seeing was actually really excellent after the rain.
The Comet's faint tail was only visible in darker skies with longer exposures. This Comet has a beautiful bright green Coma (or head). The green color is caused by Cyanogen (CN) and diatomic Carbon (C2), which glows in the green part of the Electromagnetic Spectrum of Light when illuminated by the Sun in space.
Geocentric Distance:
0.0775 AU (Astronomical Unit).
30 Lunar distances.
11.5 Million km.
7.1 Million miles.
Gear:
Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR Lens.
Celestron AdvancedVX Telescope Mount.
Optolong L-Pro Clip-In Filter for Nikon.
Nikon D750 DSLR.
Lights/Subs:
46 x 60 sec. ISO 3200 exposures.
Calibration Frames:
30 x Bias
20 x Darks
Astrometry Info:
Center RA, Dec: 58.071, 22.397
Center RA, hms: 03h 52m 17.067s
Center Dec, dms: +22° 23' 47.549"
Size: 8.45 x 5.68 deg
Radius: 5.089 deg
Pixel scale: 19 arcsec/pixel
Orientation: Up is 130 degrees E of N
View an Annotated Sky Chart for this image.
View this image in the WorldWideTelescope.
&creditsUrl=&ra=57.000677&dec=23.418665&x=532.0&y=557.4&rotation=50.14&thumb=http://nova.astrometry.net/image/5655145){kind=link}
Processing:
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.
Carl Sagan on Comets:
People's reaction to Comets, excerpt from Cosmos S01E04:
Time code: 13:18
"By 1910, Halley's comet returned once more. But this time, astronomers using a new tool, the spectroscope had discovered cyanogen gas in the tail of a comet. Now, cyanogen is a poison. The Earth was to pass through this poisonous tail. The fact that the gas was astonishingly, fabulously thin reassured almost nobody. For example, look at the headlines in the Los Angeles Examiner for May 9, 1910: "Say, Has That Comet 'Cyanogened' You Yet?" "Entire Human Race Due For Free Gaseous Bath. Expect High Jinks." Or take this from the San Francisco Chronicle, May 15, 1910: "Comet Comes And Husband Reforms." "Comet Parties Now Fad In New York." Amazing stuff! In 1910, people were holding comet parties, not so much to celebrate the end of the world as to make merry before it happened. There were entrepreneurs who were hawking comet pills. I think I'm gonna take one for later. And there were those who were selling gas masks to protect against the cyanogen. And comet nuttiness didn't stop in 1910." - Carl Sagan, Cosmos.
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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Orion and Sirius in pursuit of the Pleiades. Gore Range - Summit County, Colorado. www.danielmcvey.com
L'Amas NGC 1502 et l'astérisme de la cascade de Kemble (Kemble 1) sont situés dans la constellation de la Girafe. L'astérisme est formé par l'alignement d'une vingtaine d'étoiles comprises entre la cinquième et la dixième magnitude, et qui s'étale dans le ciel sur un diamètre apparent équivalent à cinq pleines lunes (wikipedia).
Kemble's Cascade is an asterism located in the constellation Camelopardalis, next to the star cluster NGC 1502.
Acquisition:
Nikon D5300 + Zenithstar 73
iOptron CEM26 + iPolar
Filtre Optolong L-Pro
ZWO ASI224MC + WO Uniguide 120mm
Astro Photography Tool (APT) & PHD2
Best 35 de 42 x 3min -- ISO400
Traitement/processing :
Siril & Gimp
AstroM1
(rsi1.2)
This is the Trifid Nebula, a combination dark nebula and reflection nebula in the constellation of Sagittarius.
The blue gas and dust is highlighted by light reflected from the nearby star.
In the lower right is the open star cluster Messier 21.
This was created with 2 x 8 minute RGB images with an unmodded Canon 70D and Skywatcher ED100 Refractor, stacked in DSS and post processed in Lightroom.