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The unique planetary nebula NGC 2818 is nested inside the open star cluster NGC 2818A. Both the cluster and the nebula reside over 10,000 light-years away, in the southern constellation Pyxis (the Compass).
NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster. Open clusters, in general, are loosely bound and they disperse over hundreds of millions of years. Stars that form planetary nebulae typically live for billions of years. Hence, it is rare that an open cluster survives long enough for one of its members to form a planetary nebula. This open cluster is particularly ancient, estimated to be nearly one billion years old.
09-05
Osterholz-Scharmbeck, Germany, Canon EOS 600Dα, Ikharos ED refractor D = 80 mm f/5.6, 118 exposures of 30 s each at 1600 ISO, tracking only. Bayer averaged and binned twofold again; curve stretch. Named Helical nebula. Also known as Caldwell 63.
I have updated this to remove Gomez's Hamburger, which is not a planetary nebula but rather a protoplanetary disk. The picturesque Hen 2-437 has taken its place. See previous version of the collage, now renamed "99 Planetary Nebulas" (I could put "And a Protoplanetary Disk" as a subtitle, hehe!) here.
Also, Flickr seems to be allowing me to upload the 10000 pixel wide version now. The previous one was uploaded at half that size. It was bugging out or something last time I tried.
Here is a copy of the original description for your convenience, since it still applies:
Inspired by insect illustration posters, this is a large collage of planetary nebulas I put together bit by bit as I processed them. All are presented north up and at apparent size relative to one another--I did not rotate or resize them in order to satisfy compositional aesthetics (if you spot any errors, let me know). Colors are aesthetic choices, especially since most planetary nebulas are imaged with narrowband filters.
How many of them can you identify?
Processed using calibrated red, green, and blue filtered images of Mimas and Saturn taken by Cassini on September 4 2007.
NASA/JPL-Caltech/SSI/CICLOPS/Kevin M. Gill
Sh2-290 (also known as Abell 31, PK 219.1+31.2, A 31 or ARO 135) is a very old planetary nebula in the constellation Cancer.
Both its big size (one of the largest planetary nebulae of the sky) and its very low brightness are due to its age : indeed gases have expanded to such an extent that it begins to disperse in the surrounding interstellar medium (like all PN over time).
The southern part is surrounded by a bow shock effect, while the northern part has extremely faint and nuanced edges, a sign that dissolution is already advanced there.
I am happy that the very long exposure time in Halpha allowed to see the far and faint extensions and HII presence in the background which are not often visible.
I began this one in December and finished it in March as it was only accessible during less than 2h each night from my location, between 2 buildings!
It was definitely an hard target to shoot and process, on the 300s subs at f/4 almost nothing was visible on both HII and OIII filters.
I should have done many more exposures in order to bring more details, but the target began to be very low at my location so maybe next year i will ad more datas!
32h exposures (H : 266x300s / O : 94x300s / RGB : 20x120s chacun)
Newton 250mm f/3.8 on Ioptron CEM70
Camera ZWO ASI2600mm + Antlia filters HO 3.5nm & RGB
Acquisitions from 22 december to 26 march in Amiens (Bortle 7)
Processing HOO-RGB Pixinsight & Photoshop
Disintegrating Planetary Existence.
La disminución de las criaturas extrínsecos convertibles verdades divinas cambiantes esencia inmutable,
approchant la compréhension des connaissances éminence pénétrante enluminures effets lointains,
confortatus est momenti materia nota immensitate species praedicta connaturalitate,
Vorfahren berühmten Jahrhunderte böswillige bitteren Herzen ständigen Kriege glühender Chancen Macht umgibt,
不公正的邪惡寬大嚴酷的教訓唆使暴徒脾氣敵人憤怒鞭笞孵化地塊,
блуждающих несбалансированным ОПЕРАЦИЙ безграничные основы против раструбили будущих неблагоприятных подарков,
تبقى المتمردين أصوات تشتبك قادة سنوات يرثى لها معايير الهمجية المشينة القوانين المعطلة داخل,
εξαφανίστηκε συμβούλια έσβησε το πρωί προσευχές έκπληκτος ευκαιρία για αναδύεται σφαίρες λήθαργο λόγους,
厳粛な基準は、ペノンが高いボディをヒービング武装法律を行進恐ろしい文字を破壊上昇します.
Steve.D.Hammond.
As used in my two recent models Euclid R-170 mining truck and Marathon LeTourneau L-1200 wheel loader.
The planetary drive makes use of the Power Miners wheels with 48-tooth ring gear. There is a central 16-tooth gear, the sun gear, driven by the differential axle and four surrounding 16-tooth planetary gears, thus resulting in a gear ratio of 1:3.
The wheel hubs are each made of two of the Power Miners wheels with the spokes facing each other. The rubber tires are then forced on this self-made hubs.
Gidge is Interplanetary In:
Lips: alaskametro<3 "Space Unicorn" lipstick 03 FIT B
Eyeshadow: alaskametro<3 "Space Unicorn" eyeshadow 01 FIT A
Necklace: (Yummy) Serenity Layered Necklace Set (Gen.X) Classic
Body: -Belleza- Gen.X Classic Body (SL UVS) PG V1.2
Head: / HEAD / lel EvoX RAVEN 3.1
Dress: Blueberry - Secret Spell - Dress - Genx Classic
Shoes: Blueberry - Secret Spell - Heels - GenX Classic
Blueberry - Secret Spell - Panties: Panties - GenX Classic
Hair: Exile:: Polly (B)
Earrings: piccolo.// polly panda earring
Pop: piccolo.// polly panda pop
Skin: alaskametro<3 "Lily" skin Tone 2 Fit B - lgt brow (mesh bodies)
Shot on Location at: maps.secondlife.com/secondlife/Le%20Monde%20Magique/123/2...
In memory of Nate "Nnenn" Nielson.
Will also be on display at BrickWorld in the Missing Man Formation.
From upper left to lower right - conjunction of Mars, Moon and Venus. Taken Stockport UK. Taken 2/1/2017
Amid clouds of exhaust, a Boeing Delta II expendable launch vehicle with NASA's Mars Polar Lander clears Launch Complex 17B, Cape Canaveral Air Station, after launch at 3:21:10 p.m. EST. The lander is a solar-powered spacecraft designed to touch down on the Martian surface near the northern-most boundary of the south polar cap, which consists of carbon dioxide ice. The lander will study the polar water cycle, frosts, water vapor, condensates and dust in the Martian atmosphere. It is equipped with a robotic arm to dig beneath the layered terrain at the polar cap. In addition, Deep Space 2 microprobes, developed by NASA's New Millennium Program, are installed on the lander's cruise stage. After crashing into the planet's surface, they will conduct two days of soil and water experiments up to 1 meter (3 feet) below the Martian surface, testing new technologies for future planetary descent probes. The lander is the second spacecraft to be launched in a pair of Mars Surveyor '98 missions. The first is the Mars Climate Orbiter, which was launched aboard a Delta II rocket from Launch Complex 17A on Dec. 11, 1998. off at Pad 17B, CCAS Image from NASA, originally appeared on this site: science.ksc.nasa.gov/gallery/photos/ Reposted by San Diego Air and Space Museum
Jupiter and Saturn dance aroun each other, appearing close in the sky on three consecutive days, December 20, 21, and 22, 2020. Various exposures were combined to reveal detail on the planets and make their brightest moons visible.
Tech: Nikon D850, Celestron C5 (1,250mm f/10), iOptron CEM25P drive. Multiple frames with three exposure times: 1/25 sec., ISO 250, 4 sec., ISO 4000, 8 sec., ISO 6400, processed in Lightroom, stacked in Photoshop (registered and median-combined).
Composite of first images captured with new camera. Saturn captured 6/16/2015
Venus and Jupiter captured 6/17/2015
ASI120MC-S
Celestron CPC800 XLT
This is a stitched panorama of the current six planet lineup in our night sky as seen from my backyard on 27 January 2025, Two planets in the lineup that are not visible are Uranus and Neptune as they are too dim to register in the photo. Neptune is however located just a little left of Venus and Uranus is midway between jupiter and the Pleiades open star cluster midway top in the photo
An architect without aesthetic is an architect without ethic.
---
Massimiliano and Doriana Fuksas directed the Biennale of Venice 2000 with the title “Less Aesthetics, More Ethics”.
The urban transformation occurred in the last thirty years has no equal both in terms of dimension of the phenomenon and the size of the areas involved.
The first idea was to use the 2000 Biennial as a workshop for analyzing and trying to give an intelligible shape to the new planetary dimension of urban behaviours and transformations. The considerations, investigations and intuitions over the evolution of the cities took shape as a need for “something else”. “Something else” from architecture – whose troubled life we try to prolong every day – which we share our entire life with, and “something else” from successful architecture schemes: it was about recovering the awareness according to which the quality of architects and works was no longer enough. At such point, the 2000 Biennial edition had a main theme.
“CITIES: LESS AESTHETICS, MORE ETHICS”, the theme of the seventh Biennial of Architecture tries to communicate the deep unease of fast-transforming societies, where the data and reference points of an architect have utterly changed.
The exhibition, set at “Le Corderie”, draws the visitor’s attention to the “big” 280 X 5 metre screen whose images posit questions about megalopolis, areas contaminated by contradictions, conflicts, pollution, refugees’ dramatic condition, about new social aggregation centres like stations, airports and shopping centres, as well as a series of interviews with fifty architects.
For the first time, the Venice Biennial of Architecture uses simultaneously l’Arsenale, that is le Corderie, le Artiglierie and le Gaggiandre, in addition to i Giardini, the exhibition’s traditional location.
A little deeper we go into planetary imaging. This image was shot with a dedicated mono video camera. I imaged through a series of filters (luminance, red, green, blue or LRGB). This image was caputred on 29-APR-2015.
Jupiter actually rotates very fast, a complete "day" lasts under 10 hours. Due to this, the video for each channel doesn't line up with the previous, even though they were separated by mere minutes. There's software for everything though, and here each of the channels were "derotated" back to a common position. All this helps achieve a higher level of detail.
The luminance frames were shot at roughly 170 frames per second. This is almost 7 times the framerate of my previous attempt. That, combined with a focal length of 4600mm gives a fairly pleasing result. Still, at this scale the planet is only 225 pixels across. What you see here came from a mountainous 5 GB of data, all reduced down to this 58 kB final shot! Craziness.
It's a pretty challenging process and one than I am only just starting to learn. Enjoy!
Playing around with two flashlight-wand thingys (the technical term, I'm sure). David (who was the flashlight-wand man) thought this one looked a bit like Saturn's rings.
129/365?
“Planetary man”,
(influence of the seven planets on different regions of the human body)
☉ sun,
☾ Moon
☿ Merkur,
♀ Venus,
♂Mars,
♃ Jupiter,
♄ Saturn
according to Agrippa von Nettesheim (1510)
[caption by KBW],
engraving from Agrippa von Nettesheim,
De occulta philosophia, 1533 Book II, chapter XXVII.
Aby Warburg - Mnemosyne plate B9 - zodiac man -
Agrippa von Nettesheim Seite 178
RGB process (and others) of this type of image - using specific software
Shooting : I telescope
Process: Thomas Thomopoulos
Since I was missing some data along the eastern limb for a lunar mosaic, I decided to salvage the effort, and make a planetary mosaic that was befitting to a quote by Anaxagoras. It was chosen for Star Quote of the Day. www.starquoteoftheday.com/2014/08/09/star-quote-of-the-da...
Peace and love to all, this planet has passed, this species has come a long way. "Welcome and find peace here."
When I spend enough time gazing into the interstellar surface of the northern red belt (Fomitopsis mounceae), I see the rings of planets.
Groton, VT