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Messier 57 - The Ring Nebula Credit: NASA/ESA HST, Spitzer ST, Giuseppe Donatiello RA: 283,387° Dec: 33,026 The Ring Nebula (Messier 57 or NGC 6720) is a planetary nebula in Lyra and it is illuminated by a central white dwarf or planetary nebula nucleus (PNN) of 15.75 visual magnitude. All the interior parts of this nebula have a blue-green tinge that is caused by the doubly ionized oxygen emission lines at 495.7 and 500.7 nm. In the outer region of the ring, part of the reddish hue is caused by hydrogen emission at 656.3 nm. M57 is an example of the class of planetary nebulae known as bipolar nebulae. In this composition is all the resolution power of the Hubble Space Telescope. If you download the image and observe it with a good monitor through suitable software, you will be able to see even finer details. The problem is that HST images are rarely published in actual resolution, even NASA and ESA. They are often images rescaled for the web. Also consider that this is also a cutout and uses data from the Spitzer Space Telescope as well.
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The orion nebula region as captured from my backyard in Austin, Texas last Saturday night. I had been waiting for that perfect moonless night, free of clouds, but it just wasn't happening. The moon was 2/3 full and about 20 degrees away. I couldn't run very long exposures or high iso, but still I think this is my best effort so far. Still a work in progress, but getting there. Imaged with a CLS_CCD filtered canon 7D and 100-400mm lens at 400mm riding piggy back on Meade 8" LX200 classic, guided with an orion starshoot and phd. Images captured with backyardeos and stacked with nebulosity. 19x20s@iso400, 19x60s@iso400,13x180s@iso800, and lots of darks for each.
Gordon Pollock of Keldon Photography specialises in images that the eyes cannot normally see - things that are too small (microscopy), things that are too far away (astrophotography) and things that are too quick (high speed photography).
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IC 1805, an emission nebula approximately 7,500 light years from Earth in the constellation Cassiopeia, is named the Heart Nebula due to its heart shaped appearance. The open star cluster Melotte 15 lies in the middle of the heart. The nebula is part of a large star forming complex in the Perseus arm of the Milky Way galaxy. The bright knot at the lower right (which some might liken to a male body part) is separately classified as NGC 896, and was the first part of IC 1805 to be discovered. Comprising mostly glowing hydrogen, this nebula would appear red if imaged in LRGB. We have imaged it using narrowband filters, mapping Sulfur 2, Hydrogen Alpha and Oxygen 3 to R, G and B respectively to reveal great detail in the Hubble palette. 76 individual exposures totalling more than 25 hours were shot from the dark skies of West Virginia. Image processed using PixInsight and Photoshop. Data collected in West Virginia using our jointly owned Astrophysics AP 305 f/3.8 scope, in collaboration with: John Kasianowicz, Mike Selby, Stefan Schmidt and Andy Chatman Image processing: Andy Chatman
The Soul Nebula is an emission nebula located in the constellation Cassiopeia. See why It is a fantastic deep-sky astrophotography target.
Long have I gazed upon and admired one of the greatest images Hubble has ever taken. It's impossible not to pause and take it all in, even after all these years and all the times I've seen it. Ten years ago this was observed for Hubble's 20th anniversary. We're now approaching the telescope's 30th anniversary, which is guaranteed to be spectacular. Please do look at the original anniversary release to understand the history of this image: hubblesite.org/contents/news-releases/2010/news-2010-13.html One of the ways I learn to appreciate HST imagery even further is by processing it myself. There's nothing quite like staring at every little detail up close and personal to feel intimately acquainted with some data. I went into this thinking there wouldn't be much different that I could do that others haven't already done... and I was wrong, which was nice. I learned something new recently that involves subtracting light out of imagery to reveal details that are otherwise lost in a kind of bright glare. It works very well with elliptical galaxies that are very regular in shape and easy to create simple, smooth models of. The idea was still fresh on my mind when I realized that the [O III] data seemed to match up with a bright gaseous fog permeating the landscape around the Mystic Mountain. I tried applying the same technique, and to my great surprise, it worked, and really well at that. The Mountain was deeply revealed in such a way that it became more of a Pillar. Yes, it was always a pillar, but it was hard to see. There are a few places where subtraction was obviously imperfect (at least, obvious if you flip back and forth between the two) but it doesn't detract from the overall view. I also had to mask off the PSFs (point spread functions) of the stars since subtracting them out doesn't do any good. Anyway, hope you enjoy it. As always, it's a privilege to get to work with these amazing data. Data from the following proposal were used to create this image: 20th Anniversary of HST Launch Note that mosaics are already composed and ready for anyone to download and try for themselves: archive.stsci.edu/prepds/carina/wfc3/ One more note: Subtraction was not linear and applied with varying weight to each filter. It's part science, yeah, but it's also art. This means eyeballing it and adjusting it until it looks "right" to me. Lavender screen: WFC3/UVIS F502N (I used this to put some of the subtle color variation back into the image after subtraction) Red: WFC3/UVIS F673N-F502N Green: Pseudo Blue: WFC3/UVIS F657N-F502N North is down.
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Astronomers find unexpected pairs of unusual planet-like objects in the Orion Nebula using the James Webb Space Telescope.
Orion Nebula, NASA; Hubble Whenever I want to change my perception and see above my limited human existence, I like to explore pictures of universe (they are in some of my Hubs as well). Thanks to the NASA Hubble Space telescope, from 1990, we...
The Ghost Nebula is a reflection nebula in the constellation Cepheus. It lies close to the Iris Nebula, an even brighter reflection nebula.
This object, called the Helix nebula, lies 650 light-years away in the constellation of Aquarius. Also known by the catalog number NGC 7293, it is a typical example of a class of objects called...
Is there anything more breathtaking and surreal than outer space? Often, I feel like there absolutely isn't. Maybe it's because of all the celestial masterpieces stars, galaxies, and planets paint, effortlessly sweeping us off our feet? Or maybe we feel this way about space because it's something we can't touch, tame, or change? Or perhaps, it's because of that nostalgic feeling you get when it's a warm summer night and you raise your head and look up at the sky and all the stars simultaneously remind you of how truly small you are (but in the best way possible)?
The Omega Nebula is an excellent deep sky astrophotography target for your DSLR camera. This H II region nebula in Sagittarius is bright and full of color. In June 2017, I used my camera and telescope to capture M17 from my city backyard. Here are some tips for photographing this nebula with a DSLR.
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The Soul Nebula is an emission nebula located in the constellation Cassiopeia. See why It is a fantastic deep-sky astrophotography target.
