Meet The Leonids 271
Kathy Miles writes "The Leonid meteor shower is promising to be a 'once in a lifetime
event.' It's not hard to photograph meteors, a simple 35mm camera
that you can lock open the shutter on works fine. Here's complete
instructions for 35mm, video and digital cameras.And, on the same site
is information such as lore and myth, best way to watch meteors and times and skymaps for all US timezones. Happy Meteor watching!" And Geert Barentsen writes "As the adrenaline for the final Leonid meteor storm (November 19th) rises, one site seems to do a call to everybody to count the meteor activity and help science. With a few thousand meteors predicted per hour, it's going to be a busy night for true geeks :-)" Kevin Smolkowski writes "For the second year in a row, NASA will have Live Coverage of the 2002 Leonid meteor storm on Monday. Perfect for those of you surrounded by
city lights. The all night show is hosted by NASA astronomers.
They'll offer observing tips, answer phone calls from sky watchers,
and tour the skies with a video camera located at the Marshall
Space Flight Center (MSFC) in Huntsville, Alabama." Update: 11/18 22:40 GMT by T : McGravin writes "Everyone should also keep an ear on the extraplanetary visitors, too. I'm going to go add some ear-flaps to the tin foil helmet that protects my brain from them, so I can hear the meteors."
This year's once-in-a-lifetime event (Score:4, Insightful)
Re:This year's once-in-a-lifetime event (Score:5, Informative)
Speaking of which, it's 10:30PM here. I'm off to the beach to watch things and drink flasks of tea.
Re:This year's once-in-a-lifetime event (Score:3, Interesting)
Re:This year's once-in-a-lifetime event (Score:3, Informative)
Or 90. Next time the show will be this good is 2099.
Re:This year's once-in-a-lifetime event (Score:3, Informative)
Last year was, for me, unfortunately... (Score:3, Informative)
Last year was amazing...
saw "thousands" last year (Score:2)
Re:This year's once-in-a-lifetime event (Score:3, Informative)
Re:This year's once-in-a-lifetime event (Score:2, Informative)
Would have been a real shame to miss it, since I guess I'll be around 50 - 60 next time it happens if I'm not misstaken.
There was som *real* nice once.
Amoung others a double fireball on each side of a bright star and one that left a trail that spanned more than half my field of vision.
Really beautiful. *sigh*
Wish I could have filmed it.
But then came the evil clouds and blocked my view, so I went home.
Btw!
You know that you can make a wish when you see a shooting star!
So what did *you* wish for? =-)
My wish, with every blazing trail, was to pass my math exams in december and januari.
Now I'm going to catch some sleep before going to school. Starts 13:15 today. Lucky me.
Oyasumi nasai minna.
Re:This year's once-in-a-lifetime event (Score:3, Informative)
See this while you can. (Score:4, Interesting)
Re:See this while you can. (Score:3, Funny)
*damn 80% cloud cover...
Re:See this while you can. (Score:2)
Oh well, better luck in 2099 maybe
Is it just me? (Score:2, Interesting)
Re:Is it just me? (Score:2, Funny)
Re:Is it just me? (Score:3, Interesting)
Tip for Photography (Score:5, Informative)
To avoid wobbling the camera as you press the cable to start the exposure, just hold up a sheet of black paper in front of the lens. After the cable is dangling freely, remove the paper. When depressing the cable, do the same.
Also, for anyone with a Sony DV camera, the AE Candel Light mode works great for filming the showers.
Re:Tip for Photography (Score:3, Interesting)
Re:Tip for Photography (Score:3, Informative)
Have fun! Remember to take different exposures (exposure bracketing) to make sure that you get a good exposure. Expose one stop in both directions from the calculated exposure.
Re:Tip for Photography (Score:3, Insightful)
Re:Tip for Photography (Score:3, Informative)
Re:Tip for Photography (Score:3, Funny)
I don't know about you, but i'd rather use one of those x-ray/night vision filters when filming at the showers.
Re:Tip for Photography (Score:2)
Re:Tip for Photography - focus (Score:2)
Once in a lifetime like the last time (Score:2, Funny)
Sucks in Seattle (Score:3, Informative)
Damn Washington weather is depriving me of the show of a lifetime.
On a better note I will get a full nights sleep.
Re:Sucks in Seattle (Score:2, Funny)
Re:Sucks in Seattle (Score:2)
Re:Sucks in Seattle (Score:2, Interesting)
Re:Sucks in Seattle (Score:2)
It's much faster than going south, and you have a better chance at seeing them.
If I didn't have to work tomorrow....
Finally! (Score:4, Funny)
Taking photos. (Score:5, Funny)
Well shit. It's a bit late for that now. Oh well, I'll try and remember that in 30 years when the next one comes around.
What a bunch of sickos! (Score:3, Funny)
Wrong audience (Score:5, Funny)
Phew! (Score:5, Funny)
So that's what this is all about? All this talk about a shower was making me nervous.
Re:Wrong audience (Score:2)
I didn't mind 100 hour weeks. When they were spaced out. And I was paid. Overtime.
Easy now... (Score:2)
Links for each time zone: (Score:5, Informative)
Western Time Zone [starryskies.com]
Mountain Time Zone [starryskies.com]
Pacific Time Zone [starryskies.com]
Re:Links for each time zone: (Score:5, Funny)
Central Time Zone [starryskies.com]
Re:Links for each time zone: (Score:3, Funny)
Everything in this country is so darn early... Can't they move the show back three hours? That may increase the turnout (and the profit) 1000%!
I'm impressed (Score:4, Funny)
I wonder how they did this last year. Or did Nasa finally perfect its tachyon transceiver?
Uhhh.. (Score:2, Funny)
"Uh..oh, I did it wrong again. "Break one-nine." Houston! It's dark as crap up here. Ed's done busted out the capsule window trying to hit a satelite with a beer bottle and you need to instruct us on unclogging the toilet because they ate all the freeze-dried chili and they're tore up something fierce.
Re:Uhhh.. (Score:2)
poor kid (Score:5, Funny)
Anybody notice the stock photo in the NASA page? This picture. [nasa.gov] I think it's supposed to representing watching TV, but it's really a sad social commentary.
Here's a young boy, ready to go outside and move and run and play. He's got his cap on, and he's got his football under his arm.
But instead of choosing to play in the sun and use the arms and legs nature gave him to enjoy himself, he sits sullen and emotionless in front of a TV.
He chooses the bland garbage spewed forth by the corporate-run media, enticing him to stay on the couch, not to question authority, not take care of his health. They hope to sell him fast food, video games, and heart medication when he grows up.
Really quite sad.
Alternate explanation #1:
This poor little girl wants to play with her dolls and talk with her friends. But her father is a violent man, who regrets never having had a son before his wife's untimely demise. He forces her to hold a football and watch the game on TV. If she resists, she is soundly beaten. She quietly assumes the role of the son her father never had.
Really quite sad.
Alternate Explanation #2:
It's raining and the game was just cancelled.
Really quite sad.
Might be counting the dots (Score:2)
Re:poor kid (Score:2, Funny)
This poor little alien is trapped. It has chosen the most innocuous, uninteresting, and non-threatening shape it can imagine, that of an indigenous life form with the appearance of box emitting a peaceful glow.
And yet the threatening native steadfastly refuses to wander away, instead choosing to squat and stare at it in ominous silence, fingering the obvious weapon tucked under its left upper appendage and no doubt mentally rehearsing several of its favorite ways of committing murder, each more violent and gruesome than the rest.
The little alien is gazing back in desperation, afraid to make the smallest move.
Really quite sad.
Other event will make viewing difficult (Score:3, Informative)
Re:Other event will make viewing difficult (Score:2, Informative)
Good night to test radio propagation (Score:5, Interesting)
Re:Good night to test radio propagation (Score:2)
-N9ZT
hahah... (Score:4, Funny)
Crappy Moon (Score:3, Informative)
Only the best and brightest will be visible, and though there's predicted to be more of them this year than typically the effect will be diminished by the lunar glow to a fairly typical rendition.
Re:Crappy Moon (Score:2, Informative)
[starryskies.com]
http://starryskies.com/leonids/star-charts-mst.
The moon will be directly opposite Leo in the sky. Seems like its the optimal viewing position (at least given the circumstances).
But then again, IANAA (I am Not An Astronomer).
Great from a plane (Score:4, Interesting)
Too bad I can't justify getting up in a plane this year for the shower.
In-flight entertainment (Score:2)
I've seen this a few times, actually. My last three trips to Indianapolis (I live in Oklahoma City), I've seen meteors either while flying to or from Indy. The first trip was a year ago, and I saw them between St. Louis and Terre Haute; the second was in September, and I saw them between St. Louis and Springfield, MO; the third was last weekend, and I saw them just as I was leaving Springfield, MO. It's absolutely amazing to see; on two different occasions, I've seen meteors, pulsing green, pass through my altitude. Truly stunning. Matter of fact, it inspired me to write a column [barefootclown.net] about meteors. I'm not going flying tonight, but I am going to go watch the showers; I encourage everybody else to do so as well.
Re:Great from a plane - Lab instructor (Score:2)
He is in the group at the top. The pictures will likely be here.
Corbis (Owned by Gates) (Score:2, Informative)
San Diego (Score:2)
It's desert, but folks with cars have no problems getting there. Luckily the sand is well packed, 4-wheel drive is not necessary (though to go beyond the dunes it is highly recommended.)
--
[McP]KAAOS
Re:San Diego (Score:2)
darkness (Score:2, Informative)
As far as seating goes, i've always found the most success, lying on a blanket [even with a foot of snow on the ground], as opposed to a lawnchair, because no matter how far back you lean in a lawn chair, your neck will be sore from craning in the morning.
Help! In SoCal (Score:2)
For the last big meteor shower, I drove east for over an hour before I could start to see stars, and then parked in a private driveway to see.
Nothing going on from New Zealand (Score:2)
Re:Nothing going on from New Zealand (Score:2)
sad but true - we woz too early.
Listen to the far reaches of space! (Score:2, Informative)
They disrupt radio frequencies and cause them to rebound back into Earth's atomosphere.
This experiment [estec.esa.nl] back in 1999 did just that. I realize this is dated but you can listen to them youself.
misleading link (Score:2)
Here's the site to give you the best time to view (Score:4, Informative)
How long has this been going on? (Score:2, Insightful)
one in five (Score:3, Informative)
However - for the Earth as a whole that is not true. If one of the meteors which broke off the comet is only 50 or 60 meters in diameter the result would be an impact similar to Tunguska in the last century; a 20 to 30 megaton blast capable of destroying a city and killing millions.
The chance that we will lose a city somewhere on earth to an impact event during this century is about one in five.
Re:one in five (Score:3, Informative)
For the Leonids (which is the subject of the article, after all), even a large meteor will burn up in the atmosphere. The Leonid entry velocity is 70 km/s. Because the composition is mostly ice, meaning the Leonids have a lower density (approx. 1) than a typical meteor, and because of the high velocity, the Leonids burn up very quickly (relative to a "typical meteor"). The Leonids maintain a nearly constant velocity as they enter the atmosphere, and nearly any size Leonid will burn up by ~85 km altitude at the lowest. A more typical meteor, moving at 20 km/s with a density of approx. 3 will both slow down as it passes through the atmosphere (if large enough, it will slow down to the terminal velocity of any body falling in the atmosphere, and basically be in "free fall"). And for a typical meteor, 100 metric tons at "source" will be 1 kg on the ground.
I'm really a homebrewer, I just play a scientist at work.
ps Best wishes for a good storm tonight!
once in a lifetime? (Score:2)
isn't every event a once in a lifetime event?
Once in a lifetime my fat arse (Score:2)
my fat arse
The leonids come through for 2-3 year recurrent periods every 31 years.
and some years they come through when you haven't got a full moon in the sky (unlike this lot).
that would be a lot closer to "once in a lifetime"
I wish the astromony nuts would stop over-inflating expectations.
the best meteor showers i've seen have been completely unexpected and un-announced.
A cautionary tale (Score:2)
Re:A cautionary tale (Score:2)
Day of the Triffids (Score:3, Funny)
Of course, if John Wyndham had written Day of the Triffids after the advent of the Internet, he'd have used geeks as his accidentally-sighted protagonists instead of a bandaged hospital patient. The hardcore geeks will probably be taking advantage of the bandwidth everyone else isn't using 'cause they're all outside skywatching, and will catch their meteors on the NASA site
not the last leonids (Score:2)
M@
Get out and look! (Score:3, Informative)
Sorry about those of you whose weather is working against them. I'm going back out to watch after grabbing another couple of layers of blanket.
Total count: 20 in about 90 minutes (Score:2)
Now I gotta read up on this stuff. Why is this stuff hanging around at just this point in the earth's orbit? Our planet has to hustle around the sun to keep from falling in...why haven't these little bits of comet debris fallen into the sun.
Re:Total count: 20 in about 90 minutes (Score:2)
Here's the state of my current understanding of this phenomenon:
We have a periodic comet whose orbit intersects earth's orbit at about the position earth occupies every 18-19 November. Over time, bits of the comet have been separated from the main body. The forces that caused the separation of these bits have not been so great as to drive them into wildly different orbits. As we learned from Galileo, two objects of different mass fall at the same rate, therefore these bits have retained roughly the same orbit as their parent body, but occupy a different position along the orbital course. Each time the comet passes near the sun, more bits break off -- some lighter bits are driven away entirely, but bigger bits just get perturbed slightly. These perturbations serve to stretch out the original mass of the comet. Eventually, with enough time, the entire mass of the comet would tend towards a fairly uniformly distribution along this orbital path to form a sort of ring like the rings of Saturn, but for the time being, it's a lumpy, lopsided ring. The 31-year periodicity of the Leonid activity corresponds to the 31-year period of the cometary orbit. At the peaks, the earth is passing through the denser parts of the lumps along the ring while at less intense times, the earth passes through the comet's orbit at points where the ring is thin and sparse.
Even better at 5:30 EST - 52 in 30min (Score:2)
Shortly before dawn, about 5:15 to 5:45, I spotted 52 more meteors. Full moon was fairly far down in the west but the city lights and rosy fingers of dawn were still there to contend with. I envy the people who could see colors!
Australia? (Score:2)
Use FM if you cant see them (Score:2)
Great in Oslo, Norway (Score:2)
So enjoy!
Well, crap! (Score:2)
Re:Well, crap! (Score:2)
I'm a college student, actually made it to bed early to be up now, and now I can see wonderful clouds. damnation!
Too foggy in North London (Score:2)
Re:Too foggy in North London (Score:2)
Why do these things have to happen on a week-day?!
Leo-nots (Score:2)
My personal data:
2000: 68 per hr
2001: 450 per hr
2002: 93 per hr
M@
West Texas (Score:2)
Meteor Scatter Ham Radio Contacts (Score:2)
Meteor trails ionize the atmosphere, making them reflective to radio waves. You can bounce signals off the trails, and there were bunches of folks doing that this morning, particularly on the 6M (50MHz) band, which is optimum for this sort of thing.
It's really interesting to listen to. You hear nothing, then all of a sudden the signal goes to S9 (ie, strong) and stays that way for anything from a couple of seconds to a minute or more. Then it fades away and you wait for the next burst.
I only had a low power transmitter, so listened a lot more than I talked, but I did work a station near Boston, MA who heard my 20 watts with no problems during a good burst. Better equipped stations were working from the east coast to well west of the Mississippi.
NASA TV archive (Score:2)
Saw a few (Score:2)
What I saw were a few average ones, (not a lot of really bright fireballs, many trails, but no trains). And there was an odd pattern to them. We'd see 5-10 of them in the space of about 30 seconds, then nothing, absolutely nothing, for 5-10 minutes, then another little burst. That was pretty much it from 1:45 to 3am, the times I was out. I didn't have time to review my video footage, I assume it's going to suck. I used a Sony DCR-TRV20 with "nightshot" on. Got some good video of my kids oohing and ahhing, but nothing was showing up in the viewfinder at all. I think the key to meteor showers is a wide-angle lens. Or luck.
Re:Hmm... (Score:2, Funny)
Re:Watch the shower in broad daylight! (Score:2)
Re:huntsville (Score:2, Informative)
Re:Best you'll see in a while for a couple of reas (Score:2)
What? My old Physics classes taught me that this happens only when objects are moving at a relative speed that is a significant percentage of the speed of light. I doubt these meteors will be moving that fast.
And besides, what will be visible will be the trails of the meteors, which will be pretty much stationary, thus precluding any such shift in color.
Are you joking??? (Score:2, Informative)
f' = f * sqrt(1-v^2/c^2)
For a 10% blue shift, the relative speed would have to be about 0.4*c = 1.2x10^8 m/s = 432,000,000 KPH = 268,430,000 MPH.
Hell, protons coming off of the sun only hit one million MPH.
High speed meteors hit the atmosphere around 80 km/s (damn fast if you think about it!) = 288,000 KPH = 175,950 MPH. This would result in only a 0.000000712% change in apparent wavelength. Not to mention that it will slow down drastically as soon as it hits the atmosphere.
Besides, there is no reason to think that even if there were any blueshift it would cause these things to be more visible to the human eye. I would imagine that it has something like a blackbody spectrum which will cover a very large portion of the visible spectrum, with the peak concentrated somewhere around the yellow - where our eyes are pretty sensitive already.
Furthermore, optical background radiation is only a few photons per second - not hardly enough to make any difference to the human eye, and AFAIK, sunspots have nothing to do with it. Besides, sunspots aren't particularly out of whack right now: Solar Physics Dept of Belgium [sidc.oma.be] (Official sunspot counts).
Re:I hate when he/hse/it does that ! (Score:2)
Funny comment, although completely idiotic. The fireballs are commonly produced from peices not much larger than a grain of sand. Not exactly gonna do much to your car or backyard even if they did make it through the atmosphere.
Many Leonids are about marble sized (Score:2, Interesting)
Re:It's cloudy in Northern Virgina so far... (Score:2)
At least we *know* it's going to be a dud this year. The moon is full and the radar shows those clouds you mention spread over a wide area. Last year I stayed up, and then fog rolled in half an hour before peak. The only people in NoVA who did well last year were the ones that drove out to Fauquier. 12:30 AM and I'm going to bed. I'll leave the blinds up though. If we have a *real* meteor storm, the clouds won't matter. I read accounts of one back in the 19th century where people woke out of a sound sleep. Frankly, I don't think I will ever do much better than the unusually strong Perseids of '93. I saw at least a dozen bright ones that left trails that year, and one that was so bright it cast a shadow and made a noise. I turned just in time to see it disappear.
Re:Figures... (Score:2)
I missed it last year because of my bitch ex-girlfriend, and this year cuz of weather. Oh well, I'll have to live until I'm 54 then.