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| Tonight's Image; M42 The Orion Nebula | |
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| Tweet Topic Started: Nov 28 2010, 12:15 AM (458 Views) | |
| Mark | Nov 28 2010, 12:15 AM Post #1 |
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HOLY CARP!!!
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Just a quick image after a quick setup to see how things are looking for some new imaging projects this winter. We helped Trent's Great Aunt cross off an item on her bucket list. She is dying of lung cancer at age 83 and always wanted to look through a telescope. We showed her some of the highlights of the cosmos tonight including the Andromeda Galaxy, Jupiter, Orion, etc. Then we decided to do some imaging after she left. A quick and dirty attempt at processing these 100, 7 second exposures from my Canon 50D DSLR. ![]() |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| apple | Nov 28 2010, 03:39 AM Post #2 |
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one of the angels
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my gosh Mark.. you have the coolest hobbies |
| it behooves me to behold | |
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| sue | Nov 28 2010, 09:22 AM Post #3 |
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HOLY CARP!!!
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Neat picture, and a great story.
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| Mark | Dec 9 2010, 11:41 AM Post #4 |
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HOLY CARP!!!
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Just in case anyone is interested... The results from last week using 7 second duration exposures netted a well resolved trapezium but very little outer/dim nebulosity. A few days ago I took 120 x 30 second exposures but I don't have a semi-processed version of that data. Last night I took 60 x 1 minute exposures and the initial processing with not so optimal color balance looks like this. Notice how the Running Man Nebula on the left is very prominent in this data set vs. last week. Also notice how "blown out" the trapezium is. (Way overexposed). Now the trick is to layer these. But to do that I have to go through a painstaking alignment process as I have moved the camera and various other pieces of equipment that lead to some undesireable field rotation. This may or may not turn out as I planned. ![]() OK, I did a preliminary combine of the 7, 30 and 60 second exposures. Again not optimal color balance and other subtleties but it is shaping up.
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| kenny | Dec 9 2010, 11:43 AM Post #5 |
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HOLY CARP!!!
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Those pics make we want to fly there. |
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| KlavierBauer | Dec 9 2010, 11:46 AM Post #6 |
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HOLY CARP!!!
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So awesome... |
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"I realize you want him to touch you all over and give you babies, but his handling of the PR side really did screw the pooch." - Ivory Thumper "He said sleepily: "Don't worry mom, my dick is like hot logs in the morning." - Apple | |
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| bachophile | Dec 9 2010, 11:54 AM Post #7 |
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HOLY CARP!!!
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nebulosity. cool word. must use that some time in party conversation. |
| "I don't know much about classical music. For years I thought the Goldberg Variations were something Mr. and Mrs. Goldberg did on their wedding night." Woody Allen | |
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| Mark | Dec 9 2010, 12:06 PM Post #8 |
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HOLY CARP!!!
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Notice how the background is getting smoother as I add more data to the image? That's called the signal to noise ratio and we like to silence the noise as much as possible. The only way to do that is to capture more data. There is a point of diminishing returns but with this un-cooled DSLR I figure that point is somewhere in the 900-1200 exposure range. This image is less than 400 exposures. |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| KlavierBauer | Dec 9 2010, 12:13 PM Post #9 |
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HOLY CARP!!!
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Oh man, how I wish I could silence the noise today Mark... Your images amaze me in all seriousness - I really get anxious for the day when I can roll a 10" dob out of the truck up at the Northern Colorado star party in Rocky Mountain National Park (they meet once a month in a large meadow, with very dark sky), and look firsthand at some really cool stuff. |
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"I realize you want him to touch you all over and give you babies, but his handling of the PR side really did screw the pooch." - Ivory Thumper "He said sleepily: "Don't worry mom, my dick is like hot logs in the morning." - Apple | |
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| Klaus | Dec 9 2010, 12:21 PM Post #10 |
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HOLY CARP!!!
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Cool pics, Mark! |
| Trifonov Fleisher Klaus Sokolov Zimmerman | |
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| Piano*Dad | Dec 9 2010, 12:24 PM Post #11 |
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Bull-Carp
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What does this actually look like when you are peering though the eyepiece with your own eye? Tell me again the size/type of telescope you're using. BTW, I'm probably going with the GoTo 10" Dobson from Orion. |
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| KlavierBauer | Dec 9 2010, 12:35 PM Post #12 |
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HOLY CARP!!!
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P*D: *thumbs up* He'll absolutely love it. I've had my eye on a 10" dob for a few years now, and I think you and he will be very happy with it. |
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"I realize you want him to touch you all over and give you babies, but his handling of the PR side really did screw the pooch." - Ivory Thumper "He said sleepily: "Don't worry mom, my dick is like hot logs in the morning." - Apple | |
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| Mark | Dec 9 2010, 01:16 PM Post #13 |
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HOLY CARP!!!
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The darker and steadier your sky the better everything looks no matter what size telescope you are using. I have actually seen real live and vivid color in M42 through the eyepiece when we attended the Winter Star Party in the Florida Keys. The seeing conditions were so good we had my 9.25" Maksutov-Newtonian and other 10" scopes cranked up to stupid levels of power. I remember we had the f9 10" MakCass to something like 1600x on Jupiter. Our skies do not support that kind of activity but for a few nights every year. Down in the Keys it's the norm. Normal viewing in midwest skies is still a very very nice object to stare at for minutes at a time. The game here is to resolve as many of the stars of the trapezium as you can, and to notice the very subtle textures of the nebula itself. Trying to discern the outer fainter boundaries, getting lost in time and space. Oh wait, Ahem! The color or hues may or may not available from night to night depending on your atmospheric conditions.I have one telescope right now. It's a 130mm (5.1") Apochromatic Triplet Refractor. You will love that scope. |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| brenda | Dec 9 2010, 02:27 PM Post #14 |
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..............
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Beautiful stuff, Mark.
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“Weeds are flowers, too, once you get to know them.” ~A.A. Milne | |
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| Frank_W | Dec 9 2010, 02:28 PM Post #15 |
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Resident Misanthrope
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Outstanding!!
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Anatomy Prof: "The human body has about 20 sq. meters of skin." Me: "Man, that's a lot of lampshades!" | |
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| Mark | Dec 9 2010, 02:31 PM Post #16 |
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HOLY CARP!!!
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Thanks Brenda. It's all just fun for me. |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| Mark | Dec 9 2010, 02:31 PM Post #17 |
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HOLY CARP!!!
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Thanks Frank! |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| kenny | Dec 9 2010, 02:32 PM Post #18 |
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HOLY CARP!!!
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I think you have to spend TONS of money to see WOWWEE-level stuff (like colors in things) with the naked eye. Sill that first glimpse of Jupiter's moons or Saturn's rings (visible on lower-end gear) is exciting. I'll go to star parties and get in line to peek through the huge scopes someone else paid for and set up. |
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| Mark | Dec 9 2010, 02:37 PM Post #19 |
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HOLY CARP!!!
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That's what I do too Kenny! I had an 18" GOTO Dob a few years ago. It was awesome but a real PITA to haul around. I setup my little litecup (vs. lightbucket) start the exposures running and then head out to the field to seek out the 25" and larger Dobs. Biggest one to date is 36". With a good pair of binoviewers installed it was like walking/floating in space. The first time you see the Horsehead and the Flame nebula live is akin to seeing Saturn or Jupiter for the first time. You never, ever forget the image. |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| kenny | Dec 9 2010, 02:40 PM Post #20 |
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HOLY CARP!!!
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But Mark, everyone lines up in the dark for their turn in the red light district with the guy who has a big one. |
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| Mark | Dec 9 2010, 02:50 PM Post #21 |
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HOLY CARP!!!
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Size does matter. |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| kenny | Dec 9 2010, 02:52 PM Post #22 |
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HOLY CARP!!!
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... with pianos. |
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| Mark | Dec 9 2010, 03:06 PM Post #23 |
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HOLY CARP!!!
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... and Telescopes |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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| Piano*Dad | Dec 9 2010, 03:41 PM Post #24 |
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Bull-Carp
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Hey, what kind of magnification is good on a scope of the sort I'm getting. There are tradeoffs, I know. The scope comes with these two eyepieces (I think): 28mm Deep View eyepiece, 2-inch barrel diameter 12.5mm Illuminated Plossl eyepiece, 1.25-inch barrel diameter |
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| Mark | Dec 9 2010, 04:04 PM Post #25 |
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HOLY CARP!!!
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A nice eyepiece calculator here: http://www.csgnetwork.com/telefov.html The 28mm will be 43x (Focal Length of Telescope / Focal Length of Eyepiece) 1200/28 = 42.85714285714 with 1.31 degrees True Field of View (fov) which is a pretty nice wide field but you can get even wider apparent fov eyepiece for more $$$. The 12mm will get you to 100x Planets really start to look "sizable" at 180x so you will probaly want t get an 8mm and a 6mm eyepiece for planetary viewing. from Orion's site:
Source: http://www.telescope.com/control/learning-about-telescope-power-magnification |
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___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
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The color or hues may or may not available from night to night depending on your atmospheric conditions.


11:06 AM Jul 11