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Sunday, December 30, 2007
The Galaxy and the Cluster
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Sunday, December 16, 2007
Eastern Veil
Sunday, December 9, 2007
Orion Nebula
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I shot this with my 100mm F6 Refractor and my Canon 300D DSLR.
Horsehead and Flame
Friday, November 30, 2007
Final Comet Holmes?
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Comet Holmes is definitely changing in appearance. It is larger than the sun from last word, and has become a very noticeable naked eye blob in the northern sky. It had a pretty dramatic start, and it's appearance changed almost nightly. This comet has been the astronomical equivalent of a cliffhanger novel, with a surprise in store each night. At least that is how the early days of this apparition were. The comet has now evened itself out fairly well, and is remaining largely unchanged. It still remains a great target, but unless something truly exceptional happens, I don't think I will image it much more.
Oh well, maybe one more wide-field if it crosses something interesting.
Wednesday, November 28, 2007
Little Dumb Bell
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This is the Little Dumb Bell Nebula, named for it's resemblance to the larger Dumb Bell Nebula in a different region of the sky. It is a planetary nebula, and is basically a dying star throwing off it's shells of gas prior to burning out. This will not happen anytime soon, as galactic time is VERY slow compared to what we experience, so we get to enjoy it as pretty scenery for quite a while longer.
Crab Nebula
Thursday, November 15, 2007
Silver Coin Galaxy
Monday, November 12, 2007
Holmes in Detail
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A false color view is shown below...
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Another View of Comet Holmes...
Saturday, November 10, 2007
Crab Nebula
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I imaged this with my smaller Mak-Cassegrain scope using Cyan-Magenta-Yellow filters.
Rose is a Rose
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Monday, November 5, 2007
Holmes Beginning to Show a Tail!
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Wednesday, October 31, 2007
Eastern Veil Close-up
Eastern Veil Nebula
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The Eastern Veil Nebula is a portion of the overall Cygnus Veil Complex. It was formed many thousands of years ago when a star exploded, or went "supernova" as it is known. The Eastern Veil is not photographed as often other portions, like the "Witch's Broom" region, and is considerably harder to see visually. A dark sky, large scope, and some type of OIII filter is normally needed to see it with your eyes. The Witch's Broom region lies out of the frame at the bottom of the image.
Andromeda Wide-Field
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Spiral Galaxy M74
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Here is the Spiral Galaxy M74, showing off it's classic spiral structure. I shot this using an older CCD, the SAC 8 II, that I like to use due to it's extremely sensitive chip. This is a composite of 90 eight to twenty second images stacked. Anything longer than that and the CCD was so saturated nothing could be seen of the galaxy. That is how stupid sensitive this camera is. I could have stretched the image a bit more to bring out some more detail, but it looked good so I just left it.
Pelican and North American Nebula Region
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Tuesday, October 30, 2007
More Comet 17P Holmes...
Saturday, October 27, 2007
Comet Eruption!
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Tuesday, October 23, 2007
Dark Nebulae in Cygnus
Double Cluster
Saturday, October 13, 2007
M27 Re-done...
Helix Nebula
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This large planetary nebula is known as the Helix Nebula. It is very large (as big as the full moon), but is notoriously difficult to see without a very wide-field scope. It is so large, because it is the closest object of this type to the earth. It remains dim to our eyes, because the light is spread out over a larger area than the typical planetary nebula, in turn lowering the surface brightness. If it were farther away, the light would be more concentrated, and we would see it a bit easier.
This nebula is composed of gas and dust thrown off by a dying star. It is called the Helix because high detail images show two shells of gas resembling a vague helix shape. It is assumed the two shells were created by perturbations in the orbit of the star caused by an unseen companion.
I shot this image using my Canon 300D DSLR and my 10" Schmidt-Newtonian telescope.
Seven Sisters
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The Pleiades, or the Seven Sisters as it is more commonly known form a very interesting star cluster in the fall night sky. It is a naked eye cluster composed of 7-9 bright blue stars, surrounded by a faint cloud of reflective dust. The whole affect is quite impressive in a wide field telescope or binoculars. It takes a scope of about 10" and a very dark night to even attempt to see the dust cloud surrounding these stars. It is captured fairly well in the above photo.
Monday, September 17, 2007
The Swan
Barnard's Galaxy
Tuesday, September 4, 2007
Pinwheel Galaxy
Great Andromeda!
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The Crescent
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The Eagle
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Thursday, August 23, 2007
M27 in CMYK
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Here is a new image of Messier 27, done with my new set of Edmund dichroic cyan, magenta, and yellow imaging filters. An alternative to the traditional red, green, blue method, the CMY method has the advantage of allowing more than one color channel through the filter at once making imaging time less critical. At least, that is what it is touted for. This is my first CMY image, and it does appear to do just that. With the old RGB filters, it seemed all I could ever get was red/blue and the green channel was notoriously difficult to get signal with. There are very few, if any, green objects in space, so it would seem that the green color channel is a waste of exposure in many cases. The Cyan filter has both green and blue in its spectral wavelentghs, and in fact pulls in the entire OIII spectral line, which is missed by the old RGB method as this line lies between the blue and green filters.
These filters can be obtained from Edmund Optics and run about $68 dollars a set unmounted.
Yes, they are parfocal! However, I do not believe they block IR.
This image was done using my DSI Pro CCD that I normally use for guiding.
Tuesday, August 14, 2007
The Veil
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These interstellar shock waves will dissipate in several million years as they expand.
Monday, August 13, 2007
The Cocoon
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Here is an image of Caldwell 19, the Cocoon Nebula. It is a large cloud of gas and dust superimposed over a dark nebula. The long, dark division among the stars is a black cloud of obscuring dust blocking out the stars behind. This nebula is quite dim, and is very hard to see with the eyes, even through a large telescope.
Sunday, July 29, 2007
Pinwheel Galaxy
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I shot this image of M101, the Pinwheel Galaxy several months back, but never got around to processing it. It is finally finished, but not as good an image as I had hoped. This is a quite large galaxy visible in the "Big Dipper" constellation. It has one spiral arm that has been disturbed and thrown "off kilter" by something in its past. I shot this on my smaller 5" Maksutov Cassegrain scope with an older SAC 8 II CCD camera.
Sunday, July 22, 2007
Dumbell Close up
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*Warning - Technical stuff*
Light from interstellar objects comes in three flavors. It is Red from Hydrogen Alpha (HA) gas, Blue from cooler Hydrogen Beta (HB) gas, and Teal/Green from ionized Oxygen (OIII). These three color sources make up the Red/Green/Blue light our eye registers when looking at these types of objects.
Normally the cooler Hydrogen Beta is found in mostly the same places you will find Oxygen (OIII), so you can use the data from OIII and double it to serve as green and blue for the color separation process, and get a result close to the original. This is the basis of the Two Filter - Three Color process in use in this image. The Green and Blue channels are composed of OIII light, and the Red channel is from Red light. I did it this way because I was not satisfied with my Green and Blue filters and did not yet own a Hydrogen Alpha filter.
It seemed to work out OK. Sometimes Rocket Science really isn't Rocket Science.
Saturday, July 21, 2007
Whirlpool in the Sky
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This object is Messier 51, otherwise known as the Whirpool Galaxy. It is a pair of interacting galaxies that very much resemble their name, a whirlpool. The smaller galaxy is actually behind the larger one, and there is some speculation as to whether they are truly interactive or not. A small number of scientists think they are just in the same line of sight, and not truly interactive.
Bode's Galaxy
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Messier 81 also known as Bode's Galaxy, is shown here with its smaller companion galaxy, Messier 82. Messier 82 is very interesting in the fact that it is in the throes of a violent explosion. Large streamers and filaments can be seen streaming from it in Hydrogen Alpha light. This picture was done in normal visible light, so they are not as prominent, but still can be seen. It is one of the great mysteries of science as to why this galaxy is exploding. The current theory has it resulting from a close pass from the larger spiral, M81.
Thursday, July 19, 2007
Dumbell in the Sky
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A View of the Lagoon...
Trifid on a Whim!
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I took this image with my Canon DSLR through my big telescope, a 10" Schmidt-Newtonian. I was actually adjusting my autoguider and decided to shoot a few images of this object as a test. It turned out so well I kept it.
The Trifid Nebula, otherwise known as Messier 8, is a region located in the Sagittarius Arm of the Milky Way. It is a region of young stars formed in the glowing cloud. An open cluster, M21 is located below and to the left.
Eye of the Raven - The Background...
I have set this Blog site up to highlight my endeavors in the field of Astrophotography, and maybe educate a few people in the process. True science these days is becoming hard to find, as special interests slant research more and more. The only science that appears to be unaffected is that of cosmology and astronomy. The general public simply does not know enough about it, or it does not affect them in anyway for them to care about it. I hope to help change these attitudes, and maybe spur a few others to explore the wonders of the natural world.
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