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Captured 19 May 2021, 00:16 hrs ET, Springfield, VA, USA. Bortle 8 skies, Mallincam DS10C camera, Celestron 8 inch SCT f/6.2, exposure 60 sec, gain 10, bin 1, stack of 10 light frames, dark and flat frames subtracted, no filter.
Clouds: clear
Seeing: ok
Transparency: ok
Moon phase: 41%
FOV: 47 x 36 arcmin before crop
Resolution: 0.8 arcsec/pixel
Orientation: Up is South
Apparent magnitude: +8.4
Apparent size: 11 x 7 arcmin
Appearance: Beautiful interacting spiral galaxies.
From Wikipedia:
The Whirlpool Galaxy, also known as Messier 51a, M51a, and NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. Its distance is estimated to be 31 million light-years away from Earth.
The galaxy and its companion, NGC 5195, are easily observed by amateur astronomers, and the two galaxies may be seen with binoculars. The Whirlpool Galaxy has been extensively observed by professional astronomers, who study it to understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.
What later became known as the Whirlpool Galaxy was discovered on October 13, 1773, by Charles Messier while hunting for objects that could confuse comet hunters, and was designated in Messier's catalogue as M51. Its companion galaxy, NGC 5195, was discovered in 1781 by Pierre Méchain, although it was not known whether it was interacting or merely another galaxy passing at a distance. In 1845, William Parsons, 3rd Earl of Rosse, employing a 72-inch (1.8 m) reflecting telescope at Birr Castle, Ireland, found that the Whirlpool possessed a spiral structure, the first "nebula" to be known to have one. These "spiral nebulae" were not recognized as galaxies until Edwin Hubble was able to observe Cepheid variables in some of these spiral nebulae, which provided evidence that they were so far away that they must be entirely separate galaxies even though they are seen close together.
The advent of radio astronomy and subsequent radio images of M51 unequivocally demonstrated that the Whirlpool and its companion galaxy are indeed interacting. Sometimes the designation M51 is used to refer to the pair of galaxies, in which case the individual galaxies may be referred to as M51a (NGC 5194) and M51b (NGC 5195).
Deep in the constellation Canes Venatici, M51 is often found by finding the easternmost star of the Big Dipper, Eta Ursae Majoris, and going 3.5° southwest. Its declination is, rounded, +47°, making it a circumpolar (never setting) for observers above the 43rd parallel north; it reaches a high altitude throughout this hemisphere making it an accessible object from the early hours in November through to the end of May, after which observation is more coincidental in modest latitudes with the risen sun (due to the Sun approaching to and receding from its Right Ascension, specifically figuring in Gemini, just to the north).
M51 is visible through binoculars under dark sky conditions, and it can be resolved in detail with modern amateur telescopes. When seen through a 100 mm telescope the basic outlines of M51 (limited to 5×6') and its companion are visible. Under dark skies, and with a moderate eyepiece through a 150 mm telescope, M51's intrinsic spiral structure can be detected. With larger (>300 mm) instruments under dark sky conditions, the various spiral bands are apparent with HII regions visible, and M51 can be seen to be attached to M51B.
As is usual for galaxies, the true extent of its structure can only be gathered from inspecting photographs; long exposures reveal a large nebula extending beyond the visible circular appearance. In 1984, thanks to the high-speed detector—the so-called image-photon-counting- IPCS—system—developed jointly by the CNRS Laboratoire d'Astronomie Spatiald (L.A.S.- CNRS) and the Observatoire de Haute Provence (O.H.P.) along with the particularly nice seeing offered by the Canada-France-Hawaii-Telescope (C.F.H.T.) 3.60m Cassegrain focus at Mauna Kea summit in Hawaii, Hua et al. detected the double component of the very nucleus of the Whirlpool galaxy (article in Astrophysical Letters and Communications, 1987, vol. 25, pp. 187–204).
Whirlpool Galaxy lies 31 million light-years from Earth and has an estimated diameter of 76,000 light-years. Overall the galaxy is about 43% the size of the Milky Way. Its mass is estimated to be 160 billion solar masses, or around 10.3% of the mass of Milky Way Galaxy.
A black hole, once thought to be surrounded by a ring of dust, but now believed to be partially occluded by dust instead, exists at the heart of the spiral. A pair of ionization cones extend from the active galactic nucleus.
The pronounced spiral structure of the Whirlpool Galaxy is believed to be the result of the close interaction between it and its companion galaxy NGC 5195, which may have passed through the main disk of M51 about 500 to 600 million years ago. In this proposed scenario, NGC 5195 came from behind M51 through the disk towards the observer and made another disk crossing as recently as 50 to 100 million years ago until it is where we observe it to be now, slightly behind M51.
The central region of M51 appears to be undergoing a period of enhanced star formation. The present efficiency of star formation, defined as the ratio of mass of new stars to the mass of star-forming gas, is only ~1%, quite comparable to the global value for the Milky Way and other galaxies. It is estimated that the current high rate of star formation can last no more than another 100 million years or so.
Three supernovae have been observed in the Whirlpool Galaxy:
In 1994, SN 1994I was observed in the Whirlpool Galaxy. It was classified as type Ic, indicating that its progenitor star was very massive and had already shed much of its mass, and its brightness peaked at apparent magnitude 12.91.
In June 2005 the type II supernova SN 2005cs was observed in the Whirlpool Galaxy, peaking at apparent magnitude 14.
On 31 May 2011 a type II supernova was detected in the Whirlpool Galaxy, peaking at magnitude 12.1. This supernova, designated SN 2011dh, showed a spectrum much bluer than average, with P Cygni profiles, which indicate rapidly expanding material, in its hydrogen-Balmer lines. The progenitor was probably a yellow supergiant and not a red or blue supergiant, which are thought to be the most common supernova progenitors.
On 22 January 2019, a supernova impostor, designated AT2019abn, was discovered in Messier 51. The transient was later identified as a luminous red nova. The progenitor star was detected in archival Spitzer Space Telescope infrared images. No object could be seen at the position of the transient in archival Hubble images, indicating that the progenitor star was heavily obstructed by interstellar dust. 2019abn peaked at magnitude 17, reaching an intrinsic brightness of -14.9.
In September 2020, the detection of a candidate exoplanet, named M51-ULS-1b, orbiting the high-mass X-ray binary M51-ULS-1 in this galaxy was announced. If confirmed, it would be the first known instance of an extragalactic planet, a planet outside the Milky Way Galaxy. The planet was detected by eclipses of the X-ray source (XRS), which consists of a stellar remnant (either a neutron star or a black hole) and a massive star, likely a B-type supergiant. The planet would be slightly smaller than Saturn and orbit at a distance of some tens of astronomical units.
NGC 5195 (also known as Messier 51b or M51b) is a dwarf galaxy that is interacting with the Whirlpool Galaxy (also known as M51a or NGC 5194). Both galaxies are located approximately 25 million light-years away in the constellation Canes Venatici. Together, the two galaxies are one of the most widely studied interacting galaxy pairs.
The Whirlpool Galaxy is the brightest galaxy in the M51 Group, a small group of galaxies that also includes M63 (the Sunflower Galaxy), NGC 5023, and NGC 5229. This small group may actually be a subclump at the southeast end of a large, elongated group that includes the M101 Group and the NGC 5866 Group, although most group identification methods and catalogs identify the three groups as separate entities.
the photographer on a bridge over the canal getting pictures of the people at the christmas fair in leiden on sunday.
Artwork "Captured" seen from the front. Not all sides are similar.
For more images look here: www.ingrid-siliakus.exto.org/site/kunstwerken/12533181_Op...
For more information about the Open Art Fair look here: www.openartfair.nl/indexengels.html
Full album: www.flickr.com/gp/200302414@N03/465127QK6h
This build was inspired by medieval cryptids known as “wild men” or “woodwose,” which were very hairy humanoids who lived in the forest and shunned human society.
According to legend, hunters would attempt to capture these wild men by luring them with alcohol, getting them drunk, tying them up, and then trying to extract whatever secret knowledge the wild men might posses.
“It once happened in that country (and this seems indeed strange) that a living creature was caught in the forest as to which no one could say definitely whether it was a man or some other animal; for no one could get a word from it or be sure that it understood human speech. It had the human shape, however, in every detail, both as to hands and face and feet; but the entire body was covered with hair as the beasts are”
-Excerpt from Konungs skuggsjá c. 1250
This is my entry for the 12x12 vignette category of the Summer Joust 2024
This is my wife's sister and her husband. the odd thing is, it's usually her opening her mouth to reveal what she's eating when I point the camera at her. I guess after all these years she's rubbed off on him.
Snow Job got captured by Scrap-Iron and some other snakes during a mission in the arctics...will he be able to escape?
We had a heap of snow this week, so had to make at least one shot with it ;P
Capturing Souls one f/ at a time…
You can check out what I'm up to over on my IG or my Blog.
IG - HighwaystarDoritos
Blog - HighwaystarDoritos
Captured this image of our Vintage Alphabet Baby Quilt on Melody's design wall. All quilt projects go through various stages. Quilters refer to this as WIP - Work in Progress. At this stage Melody has pieced all the strips of the Keyboard border and has covered the middle of the work with tracing paper and created a quilting template for Vintage Alphabet panel - the first quilting stage for this Baby quilt. In this photo, Melody has even interviewed the binding - using fortune cookie print fabric that will also be the backing. Over the years, Melody has found design walls preferable to viewing quilting WIPs on top of a bed.
This is the second WIP photo for this project; the first having been posted some while ago and appears several slides past this one and also in my quilting album or set.
I recently decided to Upload some of my shots again.
It's been a while ago now,
so i thought to take a picture of the Moon to start with.
This picture i took a while ago so it isn't that new.
But it was a try out to see what my camera does,
when fully zoomed in.
I didn't used special equipment.
What i do use at the moment is a Polaroid UV filter.
I took the shot with my,
Fujifilm HS20, ISO 200, f/11, 1/125, with UV filter.
Feel free to comment,
any advice for better settings will be much appreciated.
I hope you like it.
Much more will come in April.
Brought in the Contrast to 75%,
and the Luminosity to 100%.
A little tip! Only just use the Lightbox on the Right.
If you zoom in on the picture,
You probably wouldn't see anything,
not even NASA equipment. :)
Final Hanging of the capture series, nine 40 x 40 cm canvases depicting cctv scenes of cultural moments from a British perspective.
German aeroplane, France. A wingless German aeroplane has been loaded on to a trailer and is now being towed away. You can see where the nose of the plane is missing.
Scenes such as this were commonly used as propaganda, intended to reaffirm resolve against the enemy.
[Original reads: 'OFFICIAL PHOTOGRAPHS TAKEN ON THE FRONT IN FRANCE. A captured German aeroplane.']
She has a lot of knowledge of wildflowers, we call her Dr.wildflower.
We took many shots of this flower, Bladderwort, little dragonfly and the other insects at the small island Mooyido near the Inchon Airport. Of course she led me there by metro, bus, walking, boarding ship and bus again. complicate? not exactly for real.. ^^
BTW as soon as the ship from Youngjongdo to Mooyido finish turning the direction for leaving we almost reached the pier of the Wooyido. ^=^ OMG the forfeit of delightful shipping!!
Her main interest is not an insect but wildflower, my matter of concern is not wildflowers but bugs or insects. so far so good! ^=^
One day recently, I had this odd idea to capture bus stops in the Minneapolis/St. Paul metro area. There is a variety of age and construction, and most of the time they just blend into the urban landscape. I thought it would be interesting to isolate them and record the range of designs.
How? So far, I'm using a Pacemaker Speed Graphic with a 6x8 120 roll film back and a Leitz 200mm f/2.8 projection lens, focal plane shutter. Kodak Ektar C-41 processed at home.