ISON Image of the Week: Archives

Every week through 2013 we have posted a new image/article related to comet ISON. Here is an archive of the previous weeks:

Dec 16, 2013: There's No More Ice On ISON
There are a couple of different ways this week's Image of the Week could have gone. In one reality, we could have been posting one of a number of truly stunning recent images of comet ISON which, having survived its passage through the Sun's million degree atmosphere, now dominates the northern hemisphere night skies! Alas, we do not live in that reality. ... READ MORE...


Dec 09, 2013: ISS ISON
We know by now that comet ISON is very likely gone but it is certainly is not forgotten, and over the coming couple of weeks we will continue to see a steady trickle of cool images come in. This latest photo of comet ISON is particularly exciting as not only was it taken by a hand-held camera... but it was taken from space! ... READ MORE...


Dec 02, 2013: Three Eyes On ISON
By now, we suspect that most people realize the sad fate of comet C/2012 S1 (ISON). But rather than mourn what we have lost, we should perhaps rejoice in what we have gained: namely, what is arguably the largest and broadest cometary data set in history ... READ MORE...


Nov 25, 2013: An Observation in Common of an Uncommon Event
Every week since this site launched we have featured spectacular imagery from ground based observatories, astrophotographers, and satellites in space. We've certainly shown you some wonderful images of comet ISON, but this week's selection could be the best we're ever going to have! ... READ MORE...


Nov 18, 2013: What a Difference a Few Days Can Make!
This week we spoil you with two images instead of one, and we do this as Comet C/2012 S1 (ISON) has spoiled us by suddenly taking a turn for the spectacular! ... READ MORE...


Nov 11, 2013: First X-ray Images of Comet ISON - Examining the Solar System's Dinosaur Bones!
When asked why we study comets, one of our favorite analogies to use is that comets are like the dinosaur bones of the solar system. They are an ancient relic of what once was, and yield vital clues that tell us how our solar system was pieced together ... READ MORE...


Nov 04, 2013: Eight Spacecraft and Counting
From the beginning, the Comet ISON Observing Campaign (CIOC) set the goal of making this observing campaign both terrestrial and celestial, meaning we wanted to encourage and facilitate observations of the comet from every major observatory that could conceivably make them, regardless of whether they were on Earth or in space ... READ MORE...


Oct 28, 2013: An astrophotographer targets ISON
Comet C/2012 S1 (ISON) continues to thrive and brighten up nicely! It seems like we're saying this almost every week now, but that's definitely a good thing! As a dynamically new Oort Cloud comet, and not a particularly big one, ISON is definitely a comet that is at an elevated risk of fragmenting, disrupting or generally fizzling out. ... READ MORE...


Oct 21, 2013: Still In One Piece
As we have mentioned once or twice, for a few months now there has been ongoing speculation that comet ISON's demise is imminent. The CIOC has always been clear that the fate of this comet is very much in the balance. But as of right now, comet ISON continues to perform well and remains in one piece - and that's not just speculation! ... READ MORE...


Oct 14, 2013: First Amateur Spectrum of Comet ISON
Scientists study comets for many reasons including how they formed, what their mass and density is, what physical and chemical processes are occurring on their surface and within their core, and even what would happen if a large one impacted our planet! That list is far from exhaustive but fundamental to all of those questions, and many others we have, is this: what are comets made of? ... READ MORE...


Oct 07, 2013: A SWAN Diver
On October 1st, 2013 comet ISON flew just 0.07AU from Mars, during which time a fleet of spacecraft at the Red Planet turned their gaze towards the comet, and we know at least one instrument - HiRISE, on the Mars Reconnaissance Orbiter - successfully imaged comet ISON! But the day before HiRISE took its first set of images of ISON, another spacecraft - far from Mars - also obtained its first images of comet ISON... ... READ MORE...


Sep 30, 2013: A Backyard Comet
We now have less than two months to go until comet C/2012 S1 (ISON) has its close brush with the solar corona and, at time of writing, it still seems to be a healthy Oort Cloud comet! ... READ MORE...


Sep 23, 2013: STEREO Coming Into Focus
As we have reported over the past couple of weeks, ground-based observers are finding it increasingly possible to obtain some very nice images of Comet C/2012 S1 (ISON) with only modest sized telescopes. As long as the comet continues to behave itself -- as it seems to be doing right now -- then those viewing conditions should improve at least through much of October... READ MORE...


Sep 16, 2013: A Comet's Tail
Bit by bit, day by day, comet C/2012 S1 (ISON) continues to make steady progress en route towards its toasty encounter with the Sun on November 28, 2013. Last week we posted a beautiful star-filled scene containing M44, Mars and a just-barely-visible Comet ISON. This week, there's certainly no need to squint your eyes to see our favorite sungrazing comet! ... READ MORE...


Sep 09, 2013: Starry Night
Compared to how we think it will look a couple of months from now, comet ISON is still a faint target for astronomers and certainly a challenge for astrophotography enthusiasts. However, that did not stop "amateur" astronomer Bernd Gährken from recording this wonderful star-filled image... READ MORE...


Sep 02, 2013: Comet ISON Controversy!
A recent image of Comet ISON, recorded by the Hubble telescope, has surfaced online and caused quite a stir. Far from looking like a comet, we see an almost geometric pattern of streaks of light that look far, far different to the image released by the Hubble team. Understandably, this raises more than a few eyebrows... READ MORE...


Aug 26, 2013: A surprisingly well-behaved comet
It's hard to believe that it's only two weeks since comet ISON was recovered after being hidden by the Sun's glare for several weeks. Since then, observers have started to make more observations of the comet and report their findings... READ MORE...


Aug 19, 2013: It's Alive!
After several weeks of being hidden behind the Sun, comet C/2012 S1 (ISON) is finally beginning to re-emerge, and early, tentative measures of its brightness hint that it is indeed beginning to slowly brighten up -- which is what we hoped and expected it would do! ... READ MORE...


Aug 12, 2013: The Soda-Pop Comet
Formally it's known as C/2012 S1 (ISON) but informally it has been labelled many other things, most recently the "Soda-Pop Comet"! On June 13, 2013, the CIOC's Dr. Casey Lisse led an observing program that had the Spitzer Telescope spend a full 24-hours observing Comet ISON. What Spitzer found does not tell us whether ISON is going to fizzle or sizzle, but certainly tells us that ISON appears at least to be very fizzy! ... READ MORE...


Aug 05, 2013: ISON: Bringing People Together
If there were one word to summarize the Comet ISON Observing Campaign better than any other, that word would perhaps be "collaboration". There is arguably no aspect of scientific discovery that is more important than collaboration: scientists coming together to share their knowledge, insight, perspectives and work, both strengthening existing ties and forming new ones. ... READ MORE...


July 29, 2013: Contributing Science
One of the many strengths of the Comet ISON Observing Campaign is how broad and inclusive it is. When our team was formed, our task was not just to coordinate and encourage all of the large, well-known observatories (i.e. Keck, etc) and spacecraft to observe and collectively gather science. Our task was to coordinate and encourage scientific observations from all resources ... READ MORE...


July 22, 2013: Let History Be Our Guide?
This week we chose not to highlight Comet ISON, but instead a completely different comet: C/1680 V1 (Kirch). Are we already out of ideas, and bored with Comet ISON? Of course not! Discovered in 1680 (hence the C/1680 designation), comet C/1680 V1 (Kirch), was first spotted by German astronomer Gottfried Kirch in early November, 1680, and ... READ MORE...


July 15, 2013: Swift Science
Last week we highlighted the early space-based observations of Comet ISON from the NASA EPOXI (formerly Deep Impact) mission, the results from which gave us a very early indication of the activity level of the comet, and marked the beginning of space-based studies of this potentially exciting object. That article also highlighted the fact that ... READ MORE...


July 8, 2013: Eyes in the Sky
One of the strengths of our Comet ISON Observing Campaign is that we're not only global -- we're also celestial! For centuries, astronomy has relied solely on ground-based observations, and this has worked out pretty well so far. Modern optics in particular now enable tremendous deep sky imaging, and even the faintest of comets and asteroids are within the reach of most. READ MORE...


July 1, 2013: Where it all began
This is where it all began: the so-called "discovery image" of Comet C/2012 S1 (ISON), taken on September 21, 2012 by astronomers Vitali Nevski and Artyom Novichonok. They captured the comet using a 40-cm (16-inch) telescope in Russia that is part of the International Scientific Optical Network, or "ISON", hence the name. READ MORE...

Every week this year we will put up a new image related to Comet C/2012 S1 (ISON). If you have a cool image you'd like us to consider, please send it to sungrazer@nrl.navy.mil, along with a description and any credits you would want applied. We'll contact you if we choose to use your image on the CIOC Website.