Astrophotography
45 creative works found
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Recorded on 22 January 2007
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I have written a tutorial for this image. It can be found here. Date Pictures Taken: 15/7/2007 / Camera: Canon EOS 350D / Lens: Canon 17-85mm f/4-5.6 IS USM / 5 image manual blend / Shutter Speed: 20 sec / Lens Aperture: f/4 / Focal Length: 17mm / ISO Speed: 1600 View Larger Here
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This image shows the three “stars” of Orion’s sword. / / The great nebula in the centre is classified as M42. It is approximately 7500 million million miles away from the earth. The red colour is caused by light being radiated by hydrogen atoms. The blue colour is the reflection of light being radiated by the massive O-class stars at the core of the nebula. The dark patches are caused by interstellar dust blocking our view. / / The smaller “Running Man Nebula” below it is classified as NGC1977. / / Technical details – Canon 400D with 200mm lens, 11×120 second exposures @ ISO800. Dark subtraction, flat field application, registration, stacking and processing in IRIS. Total exposure time 22 minutes. Here are some examples of my astrophotos as laminated prints
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Recorded during the solar maximum in 1991. / The Southern Cross is near the top of the image.
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A globular cluster in the constellation of Centaurus, this is a gigantic ball of over a million ancient red stars. / . / Technical details – Canon 400D with 200mm lens, 50×30 second exposures @ ISO1600. Dark subtraction, flat field application, registration, stacking and processing in IRIS. Total exposure time 25 minutes. Here are some examples of my astrophotos as laminated prints
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Here is a shot of the Milky Way in the region of the constellations of Crux and Carina. You can see the Southern Cross over on the right hand side (upside down). Above it is a dark cloud of dust called the Coalsack Nebula. The bright red cloud on the left hand side is the Carina Nebula, a hydrogen emission nebula containing the massive star Eta Carinae. South is up in this image. There are approximately 440,000 stars in this image. Technical details – Canon 40Dh with EF-S 60mm macro lens at f/4, 11×300 second exposures @ ISO500. Dark subtraction, flat field application, registration, stacking and processing in IRIS. Total exposure time 55 minutes on 8 February 2008. The colours are natural. Here are some examples of my astrophotos as laminated prints
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Tutorial: Photographing the Milky Way with a standard DSLR camera
by Cain DohertyDue to the home page feature and requests to understand how I developed my image Milky Way from Apollo Bay...
Due to the home page feature and requests to understand how I developed my image Milky Way from Apollo Bay with a Canon 350D and a wide angle lens, I’ve decided to put together a basic tutorial. For this to be repeatable you must be shooting with clear dark skies, free from light pollution. The settings I used on my camera are detailed with the image. A shutter release cable is also a great tool and can keep your camera clicking as it sits on the tripod. The more images taken, the better for the final result, because this will decrease the signal to noise ratio that plagues digital sensors during long exposures. A tracking mount is not necessary with a 20 second shutter speed because the rotation of the night sky is undetectable at such a wide angle. Please read the following steps for more information. All images are hyperlinked to larger sizes. 1) Save unaligned images to drive 2) Load them into hugin_0.7_beta_4 which is available here. 3) Manually align images with control points – don’t automatically align. I aligned three images to a common one. Click the screenshot for details. 4) Click Edit – fine tune all points 5) Click View – preview window 6) Click Center and Fit buttons to achieve this view 7) Click Edit – Optimise 8) Click Stitcher – image format – multiple tiff . Final screen before clicking Stitch Now . 9) Prealigned images available here 10) Load each image onto a new layer in photoshop adjusting the blend mode to screen which is good at lightening images without lightening the darkest areas 11) Add a medium contrast curves layer 12) Add colour balance layer: shadows (-90,-25,-10), midtones (-15,-5,-20), highlights (0,-5,30) 13) The final result For comparison’s sake, shown below is a typical accompanying jpeg to a raw file I began with for one of the individual images. I used Adobe Camera Raw to extract the jpegs provided in step 1 for processing. In closing, I’d like to point out this is not the only way an image like this can be captured; there is myriads of possibilities. I have developed this simple and inexpensive method by just experimenting with the tools at my disposal. Comments are welcomed.
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After failed attempt to capture the lunar eclipse in the winter of 06-07’ due to cloud cover I decided to stick around and capture some shots of the beautifull full moon once the clouds had cleared. Wasn’t gonna pack out a 100lb telescope for nothing!! :) I hope to do more astrophotography the scope. Galaxys, nebula, and such. It is really a crime that I haven’t used it as much as I should. Enjoy! Shot with Nikon D200, / 1/400th sec. F-0 / through / Meade LXD 75 SN8 Telescope.
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The Great Carina Nebula is a giant diffuse nebula composed of ionised hydrogen. It is one of the largest H II regions in our Milky Way galaxy. / / This star forming nebula has produced the very conspicuous peculiar star Eta Carinae, which is among the most massive and luminous stars in the Milky Way, and perhaps in the universe. There are approximately 224,000 stars in this image. / / Technical details – Canon 40Dh with 200mm lens at f/4, 53×120 second exposures @ ISO1000. Dark subtraction, flat field application, registration, stacking and processing in IRIS. Total exposure time 106 minutes on 9 February 2008. The colours are natural. Here are some examples of my astrophotos as laminated prints
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Leo and Saturn rising behind trees at Woodland Waters, Lincolnshire. / / Taken on Ilford FP4+ 125 with a Lomo Lubitel 166B. Approximately 30mins at f8. / /
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Find the Southern Cross…
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I like the challenges presented through astrophotography….at times it’s a pain in the rear with all the chaos…...endless cables running from a laptop to the “brains” of the telescope. Lazer collimation of the mirrors in the scope to insure a sharp, aberration free image and the setting up and refining of the polar alignment of the mount so the scope tracks an object without any deviation over a period of time…..........but beyond all this tedious setup nonsense it can be rewarding….............This is m31 or better known as the Andromeda Galaxy. LRGB imaging with a monochrome Meade DSI Camera. Total exposure time was 1 hour 18 mins. Imaged through what is usually referred to as the “Backyard Hubble” a Celestron 10” reflector on a modified CG-5 equatorial mount. Software used: MaxIM DL, Photoshop CS3, Registax.
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This is a 15 minute exposure of star trails above one of the main pools at Bosque del Apache National Wildlife Refuge in New Mexico. I took this when it first looked fully dark outside and I was still able to catch color from the remains of the earlier sunset. The color is as it came out of the camera with noise reduction applied. I was amazed at my luck in catching an Iridium flare! “Iridium flares”http://en.wikipedia.org/wiki/Satellite_flare are brilliant glints or flares created on predictable intervals by the constellation Iridium communication satellites interacting with the sun. You can tell the hotter stars by their streak’s blue color, with cooler ones coming in more red. What amazed me is that star trails would come in this good so soon after sunset. I attribute the nearly new moon and the low light pollution of this area in New Mexico. This was taken at ISO 400 at 28mm f/2.8 utilizing long-time exposure noise reduction in camera and further selective noise reduction via Neat Image in post.
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Just a collection of shots melded together. Taken with eyepiece projection through my 10” Celestron Reflector Telescope. Reflector telescopes aren’t the best devices to capture moon or planetary shots with…...but I try :)
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Shot with a Canon EOS 350D at the focus of a 150/750 Newtonian telescope. March, 3rd 2007.
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Copyright © Grahame Clark 2007 / Grahame Clark Photography
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The clouds broke, for about 20 seconds. And if I hadn’t been looking, I would have missed it. The streaks are the clouds moving at warp speed. 8 second exposure This is actually one of the very few images of the blood moon eclipse over Perth.
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August 28th 2007, Luna Eclipse taken from the Rain Maker Observatory in Jindalee, Brisbane. Getting access to quality optics like this makes me want to clean up my antique telescope and get it working again.
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This is a composite of 4 images, joined together. I used a deep violet filter to prevent overexposure, and then put in a purple tinted ‘starfield’ in the background to mask/hide the joins.
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Venus, the Moon and me. Taken during an observing session at Woodland Waters in Lincolnshire, England / /
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Ursa Major rising behind trees at Woodland Waters, Lincolnshire. / / Taken on Ilford FP4+ 125 with a Lomo Lubitel 166B. Approximately 30mins at f8. / /
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Lunar Eclipse 28 – 8 – 07
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Designated M42 (after Charles Messier-a French astronomer who first discovered it with his telescope) it lies in the Orion Constellation the appears high in the summer sky. This nebula is a star forming region (stellar nursery) and is the middle “star” in the sword which hangs from the three star “belt” in the middle of the constellation. This is a combination of 8 stacked photos, each 5 mintues long, combined in special astrophotography software.Taken with a 10” telescope at f/3.3 with a Canon 20Da camera.
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