[meteorite-list] Tucson Show 2007 Picture of the Day - Sunday, January 28, 2007
http://www.spacerocksinc.com/Tucson_2007_28.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] KOLD Takes You Inside The Gem, Mineral and Fossil Showcase
http://www.kold.com/global/story.asp?s=5999858 Suleika Acosta KOLD News 13 Reporter Dozens of tents line downtown and other areas of Tucson for the 53rd Annual Gem, Mineral and Fossil showcase. In the next two weeks, the event is expected to bring about $100 million to our local economy. We spent a day exploring the fossil and mineral shows, discovering some of the world's rarest rocks and minerals. The gem show attracts thousands of people from all over the globe to buy and sell what they call treasures. Fossil and mineral lovers - feast your eyes on the world's largest exhibit of rare stones and rocks. It took us three days driving to get here and we just love this rock and mineral show, says Kevin Pipes. He's just one of thousands of dealers here with one mission: to buy and later sell nature's art. You can find something that you're looking for and you can just have fun doing it. I've probably spent a little over $50,000 and I may spend a little bit more, says Kevin. This is his fifth year at the show. He comes from Tennessee, where he lives in the Smokey National Park area. That's where he sells most of his finds. That's what I came here this year to look for is nice, genuine, authentic fossils and minerals that young people can get and buy at affordable prices so that hobby can continue on, explains Kevin. He is most passionate about artifacts from places like Morocco, China and the Sahara Desert. Each piece is an individual art piece when you look at the quality of it, he says. And that's not all, minerals are also big at the gem show like this red Vanadinite from Morocco, worth about $500. We sell these for jewelry and people they collect nice stuff like this, says Brehim Karaoui, a dealer from Morocco. Fossil collectors can find ancient bones dating to prehistoric times. Two vertebrae from the backbone of a prehistoric lizard, probably about 75 to 80 million years ago, says Collector Ray Meyer. Some finds mean big profit. We bought $25,000 of this one meteorite so hopefully we'll double our price and pay for all this, hopefully, says Ray. But for Kevin, his hobby goes beyond making money. His goal is to preserve these rocks, some thousands of years old. But now their all things we should cherish and take care of and if we don't take care of these stones then there won't be anything for the future generations, says Kevin. He's already planting the seed and sharing his passion for artifacts with his new grandson. What do you think Isaac? are you ready to make a deal? ha ha, adds Kevin. The gem show runs through February 11th. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Potter
To all, The Potter Nebraska thin section and slice has been sold. Soon, there will be a web site where other specimens and slides will be offered. Steve Schoner IMCA #4470 To all: I am currently making thin sections after many months of learning the process. And now I offer a quality thin section of Potter with a 1.2 gram slice from which it has been made. See: http://www.geocities.com/steve_schoner/Potter.JPG This is a piece of the Potter meteorite that I acquired from Dirk Ross some time ago. The slide is very well made with cover slip. And it does not have those annoying chips of quartz scattered in the epoxy, nor is it made from what appears to be plate glass such as those that we have all seen as of late on eBay. Potter, NE petrographic slide and 1.2g slice. $45.00 First e-mail gets both. Satisfaction guaranteed. Soon, I and my associate will be offering the production of top quality petrographic slides. Each will be graded according to perfection and priced accordingly, and some may have slices of the meteorite from which the slide was made. We will also offer petrographic slide services for your research and collections at request. Stay posted for details. Steve Schoner IMCA #4470 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Potter TS
Steve kindly wrote: To all, The Potter Nebraska thin section and slice has been sold. Soon, there will be a web site where other specimens and slides will be offered. ..hmmm?!? Now guess who might have acquired this thin section + those 1.2 grams of the material that the Potter TS has been cut from ;-) Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Mike Farmer= some guy?
Who cares? Why is is a topic for this list? Matteo, please do not mention my name, or speak a bout me, then I will do you the same courtesy. As we can all see, the Tucson show started, and within minutes you started commenting on my things and harrassing me. Please leave me alone and we will all be much happier. Mike --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: The normaly people here its many take 50.000,00 euro for year, the percentage is at 35.000,00 eurowho take a 500,000$ for year its many many few, only important persons work on finance, banks etc...after persons type Agnelli, Berlusconi, Montezemolo etc... they take at 200milions of euro for year Matteo I am confused, are you saying that no-one in Italy makes more than $500,000 per year? What a craphole! Yes, the financial police are called teh IRS here, and they don't mess with people who make lots of money, they tend to go after people who make nothing. Mike Farmer M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___ Vinci i biglietti per FIFA World Cup in Germania! yahoo.it/concorso_messenger __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tucson photos
Hello Everyone! Keith Vazquez supplied us with photos of some of the Dealers rooms for Meteorite-Times. Each photo is a thumbnail and opens in a new window. http://www.meteorite-times.com/tucson/tucson_2007_frame.htm Enjoy! Paul and Jim __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fwd: Tucson 2007 Picture of the Day - January 26, 2007
You must be a very special person, a man with spies crawling the earth, reporting back to Matteo in Venice. Perhaps they will make a James Bond type movie about matteo and his spy network. Everyone in my room is laughing at this one. --- M come Meteorite Meteorites [EMAIL PROTECTED] wrote: No problem, I have some persons in Tucson work for me for seen what is present and give to me the info when return, some good news its been arrive via phone Matteo Don't worry about it Matteo, if you were here in person you could see the piece, then you would know. But since I had like 30 different Europeans in my room today, they saw it, too bad Matteo does not leave Venice and travel a little. Mike Farmer M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___ Vinci i biglietti per FIFA World Cup in Germania! yahoo.it/concorso_messenger __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tucson photos
http://www.meteorite-times.com/tucson/tucson_2007_frame.htm Mum, I wanna go to Tucson! No, my son, you don't go to Tucson! But, ... Sssht!!! Mumble, ... Grumble, ... .. over and out! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] sam's valley
Hi list.You know how every often you are looking for that one meteorite that someday you hope to find,well thanks to moritz karl,I will be adding a real rarity to my collection.A 1.53 gram slice of SAM'S VALLEY oregon.I have been looking for that for along time.When moritz made it available on ebay,I said thats mine.And now it is.Thanks again moritz!I have plugged one of my holes in my collection. steve arnold Steve R.Arnold,chicago,Ill,Usa!! Collecting Meteorites since 06/19/1999!! www.chicagometeorites.net Ebay I.D. Illinoismeteorites Need a quick answer? Get one in minutes from people who know. Ask your question on www.Answers.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ice Hammers?
http://www.myfoxtampabay.com/myfox/pages/Home/Detail?contentId=2201781version=1locale=EN-USlayoutCode=VSTYpageId=1.1.1 Turn searches into helpful donations. Make your search count. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Average size of craters across the solar system?
I was just thinking about this, wondering if anyone has tried to compare average sizes of craters across bodies in the solar system? I was thinking along the lines that, since orbital velocity is higher the closer an object is to the sun, then there should be more bang for the buck for impactors. So, shouldn't for example, the average crater size on Mercury be bigger than the average crater size on the moon? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Earth Downgraded To Non-Planetary Status
http://www.thespoof.com/news/spoof.cfm?headline=s5i14203 First they downgraded Pluto. Then Uranus. Now according to SpaceStuff.Org, Earth is not only NOT a planet, it's not even an asteroid .. it's simply a great big rock floating around in space less important than Haley's comet (which SpaceStuff says may not even BE a comet). Why listen to SpaceStuff.Org? The world did in 2006 when astro-physicists worldwide agreed with SpaceStuff saying yes, Pluto is too small to be classified as a meteorite let alone a planet like Earth which, according to SpaceStuff USED to be a planet. SpaceStuff warns all humans on this rock to prepare themselves for their next revelation that the sun, once thought to be a star is simply a great big rock that somehow caught on fire. One SpaceStuff scientist said, We've got doubts about the Milky Way galaxy even being a galaxy even. Our solar system as you know it never existed. All 9 planets are rocks .. orbiting another rock that somehow caught on fire. NASA astro-physicists disagree with SpaceStuff. Lincoln Waterson, the man in control of the Mars rovers asked them, Mars clearly exists. We've got 13 billion dollar rovers ROVING AROUND up there. How can Mars not be a planet? Ken Peterson of SpaceStuff replied saying, You've got rovers roving around a great big giant red rock just like we've got humans roving around on this great big giant BLUE rock we call Earth. NASA denies rumors that SpaceStuff.org is asking them to downgrade the universe itself to being a dot on a page on the WWW. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Prospecting for Space Rocks
http://www.americanprofile.com/article/20536.html Prospecting for Space Rocks by Marti Attoun Steve Arnold, 40, drives across a farm field near Haviland, Kan. (pop. 612), listening intently to the hum from the home-built metal detector pulled behind his all-terrain vehicle. Suddenly, Arnold stops to listen as a whine emanates from the machine. Loud and annoying, the sound is sweet music to the meteorite hunters ears. Something metal is buried beneath the wheat stubble and, if Arnold is lucky, it will be another rock from outer space. Forty-nine times out of 50, its what we meteorite hunters affectionately call a meteor wrong, says Arnold, describing the hodgepodge of metal objectsiron wagon wheels, coyote traps, broken plows and pitchforkshes unearthed while searching for celestial treasures in Kiowa County. But Arnold has hit the jackpot, too. In 2005, Arnold followed the whine of his metal detector to a 1,430-pound meteorite that fell to Earth more than a thousand years ago, originating in the asteroid belt between Mars and Jupiter. After digging with a shovel and picking up stronger signals, he brought in a backhoe to unearth the massive chunk of iron, embedded with green crystals, the largest meteorite of its kind found on the planet. You can have absolutely no interest in meteorites and see this one and its Wow, says Arnold, one of only a few professional space-rock hunters in the world. Its extremely gorgeous. Its natures art. The rare rock, which has been exhibited at museums in Kansas and Texas and at the Tucson Gem and Mineral Show in Arizona, is for sale. Wed like to get at least $1 million, says Arnold, noting that potential customers include meteorite collectors, museums and corporations that might want to use the extraterrestrial rock for promotions. Meteorites can fetch from $1 to $100,000 a pound, depending on their rarity and size. Arnold has sold several of his more valuable finds for $25,000 and a slice of a rare moon rock for $40,000. Arnold first became interested in space rocks in 1991 after reading a book on how to find treasure with a metal detector. He researched meteorite sites throughout Kansas and found maps pinpointing where they had been found across the state. Within weeks, he was searching a field near Admire, Kan. (pop. 177). While he didnt find any space rocks, he didnt return home empty-handed, either. A farmer gave him a 4-ounce meteorite, which he sold for $121. During the last 15 years, Arnold has traveled the globe in search of meteorites. He discovered his first in Chile in 1993 and since has found more than a thousand space rocks in the United States and abroad. While traveling through Greensburg, Kan. (pop. 1,574), in 2005, he stopped to tour the Celestial Museum, home of a rare 1,000-pound meteorite discovered in a local field in 1949. Arnold speculated that he could find more with his powerful electronic detector, which can sense metal objects 15 feet underground. People thought the area had been tapped out 50 years ago, but I just had a feeling, he says. After visiting with local farmers who agreed to let him hunt in their fields between crops, Arnold and investor Phil Mani, a geologist and attorney in San Antonio, formed Brenham Meteorite Co. They secured exclusive meteorite hunting rights on thousands of acres of farmland and, within weeks, hit heavenly pay dirt. Landowners receive up-front payments as well as royalties if a meteorite is found on their property. Arnold, who lives part of the year in Kingston, Ark., bought a home in Greensburg to be closer to his meteorite hunting grounds. Sometimes his wife, Qynne, and home-schooled daughters, Lauren, 14, and Kelsey, 9, join him on his quest. Lauren recalls one trip in 2003 when her dad heard on the news that a meteorite had showered Park Forest, Ill., and hurled a rock through a roof. The family jumped in the car. We had these long broomsticks and taped magnets to them and walked along the streets with our sticks, Lauren says. Wed find meteorites and put them in our pockets. Arnold expects to spend the next two years exploring farm fields around Greensburg in hopes of finding another out-of-this-world treasure, rather than a pioneers buried plowshare. Every time I go out there, Im an optimist, he says. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Anyone visit the NJO today?
http://www.app.com/apps/pbcs.dll/article?AID=/20070128/NEWS03/701280423/1007/OPINION __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Earth Downgraded To Non-Planetary Status
Darren, Always [most always] silly fun. Many times[some times] insightful inquiry, like the previous post. I'm awaiting replies from astrophysicist types with a lot more mathematical skills than we generalists. Jerry Flaherty - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Sunday, January 28, 2007 7:50 PM Subject: [meteorite-list] Earth Downgraded To Non-Planetary Status http://www.thespoof.com/news/spoof.cfm?headline=s5i14203 First they downgraded Pluto. Then Uranus. Now according to SpaceStuff.Org, Earth is not only NOT a planet, it's not even an asteroid .. it's simply a great big rock floating around in space less important than Haley's comet (which SpaceStuff says may not even BE a comet). Why listen to SpaceStuff.Org? The world did in 2006 when astro-physicists worldwide agreed with SpaceStuff saying yes, Pluto is too small to be classified as a meteorite let alone a planet like Earth which, according to SpaceStuff USED to be a planet. SpaceStuff warns all humans on this rock to prepare themselves for their next revelation that the sun, once thought to be a star is simply a great big rock that somehow caught on fire. One SpaceStuff scientist said, We've got doubts about the Milky Way galaxy even being a galaxy even. Our solar system as you know it never existed. All 9 planets are rocks .. orbiting another rock that somehow caught on fire. NASA astro-physicists disagree with SpaceStuff. Lincoln Waterson, the man in control of the Mars rovers asked them, Mars clearly exists. We've got 13 billion dollar rovers ROVING AROUND up there. How can Mars not be a planet? Ken Peterson of SpaceStuff replied saying, You've got rovers roving around a great big giant red rock just like we've got humans roving around on this great big giant BLUE rock we call Earth. NASA denies rumors that SpaceStuff.org is asking them to downgrade the universe itself to being a dot on a page on the WWW. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hayabusa Update - January 25, 2007
http://www.planetary.org/blog/article/0839/ Hayabusa update By Emily Lakdawalla The Planetary Society Weblog January 25, 2007 With the help of Hideo Fukumori at JSpace, I've received an update on the status of Hayabusa, the Japanese mission to retrieve a sample from an asteroid, from the Japanese science journalist Shin-ya Matsuura. Matsuura said (translated from the Japanese by Fukumori): Preparation for the return trip is currently under way. From what I heard, recharging the damaged battery, which has been considered to be the most risky part, is almost done. The next critical step will be closing the sample capsule using power supply from recharged battery. Successful execution of that step will move Hayabusa a lot closer to the return trip to the Earth. Considering that the return trip operation should be started in February, I guess they will attempt to close sample capsule by the end of this month (January) and make a press release. Or, Prof. Kawaguchi might hold a press conference in February to announce the start of return operation instead. They are planning to achieve 3-axis stabilization with the remaining Z-axis wheel. Attitude control will be done with gimbal movement of ion engine and/or release of xenon gas. That means attitude control will not be very precise and the trajectory of return trip is expected to be fairly jagged (Prof Kuninaka, JAXA). __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Tightening the (Asteroid) Belt around Zeta Leporis
Gemini Observatory Hilo, Hawaii 19 January 2007 Tightening the (Asteroid) Belt around Zeta Leporis New mid-infrared images of the Zeta Leporis circumstellar disk obtained with T-ReCS on Gemini South have for the first time revealed what researchers are calling an exo-asteroid belt around another star. Far from a passive dust disk, the new data shows that there must be some sort of ongoing collisional activity within a few astronomical units (AU) of the star. These collisions sustain the replenishment of the small dust grains detected in the T-ReCS images. The results also lend support to the theory that the Zeta Leporis system contains a large reservoir of asteroid-sized bodies as well as the possibility of rocky planets. The team, lead by University of Florida Ph.D. student Margaret Moerchen and her advisor Charles Telesco, observed Zeta Leporis as part of a broader research program centered on the search for resolved circumstellar disks. The Gemini observations supplement previous observations made in 2001 that placed a strong limit on the size of the disk, but did not resolve the dust emission from that of the central star. The team using Gemini, which included UF researchers Chris Packham and Tom Kehoe, found that the majority of the dust grains in the system reside within 3 AU from the central star, exactly where the asteroids orbit in our own Solar system. The fact that the dust emission comes from so close to the central star makes this type of observation very difficult to carry out. It is the combination of the excellent mid-IR performance of Gemini South and the ingenuity of the researchers that makes this type of discovery possible. The result will appear in an upcoming issue of ApJL and was featured in the January 8, 2007 issue of ScienceNews. In the ScienceNews article Charles Beichman of NASA's JPL says, The high angular resolution measurement of the Zeta Leporis disk is a very exciting result. We now have direct evidence for structures around other stars that are directly analogous to the asteroid belt in our solar system. A pre-print of this paper can be found on astro-ph at http://arxiv.org/abs/astro-ph/0612550 Gemini is an international partnership managed by the Association of Universities for Research in Astronomy under a cooperative agreement with the National Science Foundation. The Gemini Observatory provides the astronomical communities in each partner country with state-of-the-art astronomical facilities that allocate observing time in proportion to each country's contribution. in addition to financial support, each country also contributes significant scientific and technical resources. The national research agencies that form the Gemini partnership include: the US National Science Foundation (NSF), the UK Particle Physics and Astronomy Research Council (PPARC), the Canadian National Research Council (NRC), the Chilean Comisi Nacional de investigaci Cientifica y Tecnolica (CONiCYT), the Australian Research Council (ARC), the Argentinean Consejo Nacional de investigaciones Cienticas y Tnicas (CONiCET) and the Brazilian Conselho Nacional de Desenvolvimento Cientico e Tecnolico (CNPq). The Observatory is managed by the Association of Universities for Research in Astronomy, inc. (AURA) under a cooperative agreement with the NSF. The NSF also serves as the executive agency for the international partnership. [NOTE: Images supporting this release are available at http://www.gemini.edu/index.php?option=contenttask=viewid=222 ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Average size of craters across the solar system?
Hi Darren: Lots of other factors going on: Extra velocity caused by the gravity of the impacted body. Composition of the surface being hit. Composition/density (and thus mass) of the impactor. Surface processes that will affect the loss of craters or their just fading away. At some point, with an old surface, you get saturation of craters, so reach a certain limit on number and size of craters. I am sure there are other things, but it has been a long day. Larry On Sun, January 28, 2007 5:47 pm, Darren Garrison wrote: I was just thinking about this, wondering if anyone has tried to compare average sizes of craters across bodies in the solar system? I was thinking along the lines that, since orbital velocity is higher the closer an object is to the sun, then there should be more bang for the buck for impactors. So, shouldn't for example, the average crater size on Mercury be bigger than the average crater size on the moon? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fireball Seen Over New Zealand
http://www.stuff.co.nz/3944228a11.html Mystery remains around 'plane' seen in Waikato By YVONNE TAHANA Waikato Times (New Zealand) 29 January 2007 Grace Walters thought the fireball she saw yesterday afternoon was heading for her Te Kauwhata home. She was one of a number of people who said they saw a fireball over Lake Waikare in northern Waikato, but this morning the search was called off for a possible plane crash. Yesterday, two golfers reported seeing an explosion and a fiery crash over the lake while another motorist thought the fireball was a meteorite. About 50 members of the police, fire service and the Papakura Coastguard were called to the area just before 4pm but despite a ground and air search nothing was found. The absence of any new information overnight indicating that a plane had crashed, led to the search being called off. Mrs Walters' home overlooks the golf course. She was on the telephone to a friend in her kitchen and looking out a window when she saw the fireball. There was smoke up above it and it was coming down, and it appeared just to drop, she said. I told my friend it was coming straight for my house. The episode took about 20 seconds but it was too hard to tell what it was, she said. A Rescue Co-ordination Centre New Zealand (RCCNZ) spokesperson said it was unclear what the fireball was. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Through the eyepiece microscope photography
Hi All, Here is the information that i said I would post about through-the-eyepiece misroscope digital photography. The camera that is used in my lab is a Sony DSC-P92. No special settings are used. The tech just zooms until the image is full frame and presses the timer release for the shutter. Best Regards, Pat 26 hours and counting till Tucson __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Through the eyepiece microscope photography
On Sun, 28 Jan 2007 19:45:47 -0800 (PST), you wrote: Hi All, Here is the information that i said I would post about through-the-eyepiece misroscope digital photography. The camera that is used in my lab is a Sony DSC-P92. No special settings are used. The tech just zooms until the image is full frame and presses the timer release for the shutter. Thanks. Normally I'm no fan of the consumer cameras with a lens smaller than a dime (I find it hard to believe that they really are good enough to justify the multi-megapixel CCD behind them) but one drawback of a big piece of glass is that it just doesn't work for pointing down a microscope (or telescope). I've tried it before with my F707 (58mm mounting ring) and the image from the microscope/telescope fills only about 5 percent of the CCD, or only a couple of hundred thousand pixels. I'd like to get a cheap (less than $50 or so) small glass digicam for using with a microscope, but I don't know which ones don't suck. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Average size of craters across the solar system?
Hi, The biggest craters are multi-ringed; they are big enough that they are called multi-ringed basins or just basins. Properly, I suppose we should call them impact features rather than craters. The Solar System Hit Parade: Record Holders and All Basins Over 3000 km, are as follows: Mars Elysium 4970 km* Mars Utopia 4715 km* Mars North Tharsis 4500 km* Mars Chryse 4600 km* Mars Hellas 4200 km Callisto Valhalla 4000 km Mercury Caloris 3700 km Luna Procellarum 3200 km (* disputed interpretation) For bodies not on that list, the biggest crater is: GanymedeGilgamesh 550 km Venus Mead 280 km Io Pan 100 km Europa Tyre 44 km TitanUnnamed 440 km (Cassini radar) Triton Unnamed 500 km (Voyager detection, not certain) EarthSudbury 250 km (?) EarthVredefort 300 km (?) From the lists, we can see first that bodies with geologically active surfaces will only show the most recent crater that hasn't been obliterated yet. We can see that the biggest craters are not on the biggest bodies and that the bodies with the biggest craters are not the closest to the Sun nor furthest from the Sun. If we can draw conclusions, my guess would be that the most important question after an impact would be: How Big Was the Truck That Hit You? followed by How Many Big Trucks Drive Through This Neighborhood? Mars is close to the Asteroid Belt, perhaps too close. It has played the odds too often and come up Snake Eyes more times than is healthy for a young planet. Less certain is that Luna, Callisto, and Mercury are all close to heavier bodies which may have accelerated (slingshot) an impactor to a greater velocity than the target body alone would have produced. ...shouldn't, for example, the average crater size on Mercury be bigger than the average crater size on the moon? That would take more statistics than I have on tap tonight, but they look remarkably alike. An unlabeled photo of Mercury might well be carelessly assumed to be the Moon, unless you looked for Mercury's characteristic scarp wrinkles that the Moon lacks. They're not that prominent; you might need a magnifier if the photo is small scale. The Moon has more basins over 2000 km than Mercury does. Just for fun, before we understood about plate tectonics and thought that land only moved up and down, not back and forth, it was widely believed that the Pacific Ocean was, not an impact feature, but an outpact feature, the place where the Moon spun off the Earth, leaving what would be the largest basin in the Solar System (if it were true, that is). Sterling K. Webb -- - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: meteorite-list@meteoritecentral.com Sent: Sunday, January 28, 2007 9:08 PM Subject: Re: [meteorite-list] Average size of craters across the solar system? Hi Darren: Lots of other factors going on: Extra velocity caused by the gravity of the impacted body. Composition of the surface being hit. Composition/density (and thus mass) of the impactor. Surface processes that will affect the loss of craters or their just fading away. At some point, with an old surface, you get saturation of craters, so reach a certain limit on number and size of craters. I am sure there are other things, but it has been a long day. Larry On Sun, January 28, 2007 5:47 pm, Darren Garrison wrote: I was just thinking about this, wondering if anyone has tried to compare average sizes of craters across bodies in the solar system? I was thinking along the lines that, since orbital velocity is higher the closer an object is to the sun, then there should be more bang for the buck for impactors. So, shouldn't for example, the average crater size on Mercury be bigger than the average crater size on the moon? __ __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone visit the NJO today?
Hi, I'll gladly grant that I do not a huge amount of hands-on experience with irons and have only looked at 40 or 50, but I have to say that the surface of this object has the oddest geometry. I've been staring at the reasonably good photo in the article (URL below). It does not resemble any aerodynamic sculpture I've ever seen. I call on the more expert (and there are lots of you!), does this look meteoritic in its surface features to you? Because I don't want to be a Lazy Listoid that just dumps stuff on others, I went to Google Images for iron meteorite and cruised through the first 600 pictures or so, looking for its like. Didn't see it. Lots of nice irons, but nothing with surface features like this. From what I can gather, Delaney gave it the nickel test (it passed) but was not allowed to cut or window or etch. It seems to have been informally accepted into the Meteorite Club, by the press anyway. If it's real, how did it get these surface features? Anyone have any iron similar in its sculpture? Sterling K. Webb -- - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Sunday, January 28, 2007 6:53 PM Subject: [meteorite-list] Anyone visit the NJO today? http://www.app.com/apps/pbcs.dll/article?AID=/20070128/NEWS03/701280423/1007/OPINION __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Average size of craters across the solar system?
On Sun, 28 Jan 2007 22:41:40 -0600, you wrote: Hi, The biggest craters are multi-ringed; they are big enough that they are called multi-ringed basins or just basins. Properly, I suppose we should call them impact features rather than craters. Not so much the biggest craters, but I'm wondering if all craters tend to be larger-- for example (no attempt at accurate figures here) if a 10 cm object hitting the moon at the top valocity for an object hitting the moon (a head on collision made a crater 5 meters across, would a 10 cm object hitting Mercury at top velocity not make a larger crater with Mercury's larger velocity? And wouldn't Mars' slower speed mean for lighter hits than for the moon (or Earth)? Which could factor into how iron meteorites are surviving to be found on the surface of Mars by the rovers, even though Mars' thinner atmosphere means less loss of speed? http://www.sjsu.edu/faculty/watkins/orbital.htm __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Through the eyepiece microscope photography
Hi Darren and the List, I was also leery of the small digital point and shoot cameras with the really small optics. I am a fan of Sony cameras. I have had the DSC-F505V and currently have a DSC-F828. The photos from the 828 look great. I recently bought a Sony DSC-S500 6Mpixel point and shoot for $180(not as good for through-the-eyepiece microscope photos as the DSC-P92 due to the setback from the front edge of the lens assembly to the actual lens). I am amazed at the quality of the optics in the little S500. I have taken large landscape photos and blown them up to 12x18 with eye-popping results. ymmv with non-Sony cameras Pat Brown --- Darren Garrison [EMAIL PROTECTED] wrote: On Sun, 28 Jan 2007 19:45:47 -0800 (PST), you wrote: Hi All, Here is the information that i said I would post about through-the-eyepiece misroscope digital photography. The camera that is used in my lab is a Sony DSC-P92. No special settings are used. The tech just zooms until the image is full frame and presses the timer release for the shutter. Thanks. Normally I'm no fan of the consumer cameras with a lens smaller than a dime (I find it hard to believe that they really are good enough to justify the multi-megapixel CCD behind them) but one drawback of a big piece of glass is that it just doesn't work for pointing down a microscope (or telescope). I've tried it before with my F707 (58mm mounting ring) and the image from the microscope/telescope fills only about 5 percent of the CCD, or only a couple of hundred thousand pixels. I'd like to get a cheap (less than $50 or so) small glass digicam for using with a microscope, but I don't know which ones don't suck. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Refrigerator-Sized Chunk of Ice Crushes Car in Florida
http://www.foxnews.com/story/0,2933,247938,00.html Refrigerator-Sized Chunk of Ice Crushes Car in Florida Fox News January 28, 2007 A Hillsborough County resident's Ford Mustang was destroyed by just that Sunday, when a large slab of ice fell from the clear Florida sky directly onto the automobile, WTVT reports. A neighbor of the resident who's now down a car told the local FOX affiliate that there was whooshing sound around 9 a.m. EST. Just moments later, he saw the car get crushed by ice. Neighbors speculated the block of ice weighed at least 50 pounds. No injuries were reported, and the Hillsborough County Sheriff's Office said it is investigating. Federal Aviation Administration and local airport officials told WTVT they are unsure if a plane could be faulted for the incident. This latest incident comes less than two weeks ago something similar happened in Philadelphia. A chunk of ice believed to have come from a passing airliner fell through the roof of home in the Pennsylvania suburb. No one was injured, but a mother and her 4-year-old daughter were home at the time. The FAA is currently investigating that incident. --- Aliens, Atmosphere, or Airplane? By Valerie Boey Tampa Bay's 10 News January 28, 2007 Tampa, Florida -- Neighbors heard a whistling sound is what they described before noticing that a neighbor's car was severly damaged. The Ford Mustang had a 100 pound block of ice sitting in the backseat. The back end of the car was caved in. The only explanation from neighbors is the ice fell from the sky. Hillsborough deputies do not believe it was a criminal activity. The 20-year-old owner of the car is upset and did not want to talk to Tampa Bay's 10 News. His father says he has not seen anything like it before. Neighbors have pieces of the ice chunk in their refrigerators. The owner of the car is in possession of the major chunk of ice. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Refrigerator-Sized Chunk of Ice Crushes Car in Florida
Hillsborough deputies do not believe it was a criminal activity. g.. ya think!?!?! Neighbors have pieces of the ice chunk in their refrigerators. The owner of the car is in possession of the major chunk of ice. ... I wonder if main mass is what they meant to say. haha I'm sorry, but this reporting is terrible.. 50lbs (refrigerator-sized!) ..100lbs.. the major chunk. Dear gaaad. -Original Message- From: Ron Baalke [EMAIL PROTECTED] Sent: Jan 29, 2007 1:26 AM To: Meteorite Mailing List meteorite-list@meteoritecentral.com Subject: [meteorite-list] Refrigerator-Sized Chunk of Ice Crushes Car in Florida http://www.foxnews.com/story/0,2933,247938,00.html Refrigerator-Sized Chunk of Ice Crushes Car in Florida Fox News January 28, 2007 A Hillsborough County resident's Ford Mustang was destroyed by just that Sunday, when a large slab of ice fell from the clear Florida sky directly onto the automobile, WTVT reports. A neighbor of the resident who's now down a car told the local FOX affiliate that there was whooshing sound around 9 a.m. EST. Just moments later, he saw the car get crushed by ice. Neighbors speculated the block of ice weighed at least 50 pounds. No injuries were reported, and the Hillsborough County Sheriff's Office said it is investigating. Federal Aviation Administration and local airport officials told WTVT they are unsure if a plane could be faulted for the incident. This latest incident comes less than two weeks ago something similar happened in Philadelphia. A chunk of ice believed to have come from a passing airliner fell through the roof of home in the Pennsylvania suburb. No one was injured, but a mother and her 4-year-old daughter were home at the time. The FAA is currently investigating that incident. --- Aliens, Atmosphere, or Airplane? By Valerie Boey Tampa Bay's 10 News January 28, 2007 Tampa, Florida -- Neighbors heard a whistling sound is what they described before noticing that a neighbor's car was severly damaged. The Ford Mustang had a 100 pound block of ice sitting in the backseat. The back end of the car was caved in. The only explanation from neighbors is the ice fell from the sky. Hillsborough deputies do not believe it was a criminal activity. The 20-year-old owner of the car is upset and did not want to talk to Tampa Bay's 10 News. His father says he has not seen anything like it before. Neighbors have pieces of the ice chunk in their refrigerators. The owner of the car is in possession of the major chunk of ice. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
