Perseids

MeteorWayne · Aug 10, 2007

If anyone is interested, I just recorded a spot for WCBS 880 in NY for the east coast viewers. It should run this afternoon after 3PM. If you're bored, you can stream it at: http://www.wcbs880.com/ Click on listen live. MW PS, one never knows what it will sound like after editing. I plugged the Perseids, the NJAA, and the IMO <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 10, 2007

Weather forecast is good here for tomorrow night / Sunday morning. So I will be out watching. Later on I will go out & see the ISS with Endeavour attached. The weather is fine here with only a small amount of cumulus cloud, which is dying out as quickly as you can look at it. <img src="/images/icons/laugh.gif" /> . Sunset here is @ 7:36 PM UT / 8:36 PM CET today. Andrew Brown. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 11, 2007

Night before the peak bump <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Aug 11, 2007

Last update before my nap. Latest info from IMO graph listed above as of Aug 11 2000 UT. Max ZHR= 31 +/- 6 at Aug 9 0500 UT Based on 1434 Perseids reported in 281 observing intervals from 52 observers in 16 countries. Overnight tonight, max ZHR should be 45-50 ish. Clear skies everyone!! MeteorWayne <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 12, 2007

Got to see some good ones last night. Weather here is perfect. The radiant was very obvious. A wonderful one passed in front of Pegasus @ 2:12 AM UTC. Incredibly bright. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 13, 2007

The morning of the 12th, I counted 63 Perseids, and 33 other meteors in 5.5 hours. Last night, the predicted clear skies did not occur, so I was skunked. Data at the IMO on the fly Perseid ZHR graph ( here ) has a peak of 101 +/-9 as of the time of this post, but that is only through 0 UT on the 13th, the real peak occurs later than that. When you have a lot of data, it takes quite a while to process it into scientific format, especially when you have been up all night. I expect data for the peak time (Aug 13 4-8 UT) to start coming in over the next few hours. MW <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 13, 2007

That was a shame MeteorWayne. 101 ZHR, so pretty active. Last night I saw 8 in only 10 minutes, (0:00 HRS - 0:10 HRS UTC) all Perseids & all going towards Cygnus & Lyra. Then it appeared to drop right off. I could not stay up too long as I had to be up, fairly early today. Bearing in mind, my area is quite heavily light polluted, but it is getting better, with more efficient lighting being installed (it is a lot better now than just five years ago). Still, got to see quite a few this year (last year it was raining so got to see naff all). Hi shuttle_guy, yes of course, I expect it is hot & humid in Florida, hence the hazy skies. At least you got to see some. I will be going out again soon to look again. Hopefully might see a few more, but I do know, the peak has passed. I am looking forward to seeing your data when ready MeteorWayne. I know with you it will be very accurate. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 13, 2007

If you wauld like to see my actual data, see the following: July 23/24 http://umdb.urania.be/v2/obsview/view.php?id=1609 Aug 4/5 http://umdb.urania.be/v2/obsview/view.php?id=1643 Aug 8/9 http://umdb.urania.be/v2/obsview/view.php?id=1716 Aug 11/12 http://umdb.urania.be/v2/obsview/view.php?id=1807 the data listed is Observing Period (UT) Field: Where in the sky I am looking at in RA and Declination To convert RA (in degrees) to hours and minutes of right ascension, divide by 15. Teff= Effective observing hours. Actual hours watching the sky for the period. When I am plotting meteors it takes 30-90 seconds to plot the meteor, so that time is subtracted from the period, since I am not watching the sky. For Aug 11-12, I was counting only, so never take my eyes off the sky. F is a correction factor for clouds in your field of view. 1.00 means no clouds, and no obstructions to the field of view. LM is limiting magnitude, a measure of how faint of a meteor (or star) you can see. The standard conditions for ZHR (Zenithal hourly rate) is LM +6.50 (both Uranus and Neptune visible naked eye, Milky Way and Andromeda jump out at you, etc. If your LM is less than +6.5, you see less meteors, so the ZHR is higher than your observed rate. If your LM is darker than +6.5, the observed rate is adjusted downwards to standardize the observations. Here in NW NJ, +5.50 is a good night. In the city, +3 is about average. That would mean for a ZHR of 100/Hr, you might see 10 an hour. The showers listed are next, with p=plotted, and c=counted for <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

billslugg · Aug 13, 2007

I had three five gallon buckets and two pie pans out for a total of 50 hours. Not one singe meteorite. I am sure that Meteorwayne will agree that even a null result IS a result. I have entered it onto my plot. <div class="Discussion_UserSignature"> </div>

MeteorWayne · Aug 13, 2007

I told you, for the Persids in your buckets, you have to wait a few weeks or months. Did you get out a microscope to examine the dust? That's all that will be left of Perseids. In a few months.... <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

Testing · Aug 13, 2007

70 to 75 in the high country, 25 to 30 in the high desert. <div class="Discussion_UserSignature"> </div>

MeteorWayne · Aug 13, 2007

??? 70 to 75 what, and 25 to 30 what? <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

Testing · Aug 14, 2007

Sorry Wayne, very tired. We had meteors all over the sky early Sat. & Sunday morning, but could not all be Persiads. Observation period was 2200 to 0200 PST. Came from many different directions so made no sense. Altitude 7000' , Kennedy Meadow, CA. then Inyokern Sunday night for about 30, 2200 t0 2400 PST. <div class="Discussion_UserSignature"> </div>

3488 · Aug 14, 2007

Saw three between 21:00 & 22:00 UTC, plus two sporadics, one moving from Delphinus to Aquila & another from The Plough (Big Dipper) pointers to Polaris. Unfortunately much of the sky to the north & west was clouded out, but to the south & east, it was very clear indeed. It stayed like that until about 22:00 UTC when high thin cirrus cloud covered the whole sky apart from a small section in the far south, which seemed to remain clear. Only first & second mag stars remained visible after the thin cloud moved in. Later thicker cloud moved in, but stayed dry. It was raining this morning however. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 14, 2007

Hey, I undestand the tired thing <img src="/images/icons/smile.gif" /> I was out for another 6 hours last light <img src="/images/icons/crazy.gif" /> Sat night Sun morning I saw 63 Perseids and 33 others including 9 from other showers and 24 sporadics. So the Perseids were 2/3 of the meteors. Sun Night/Monday Morn, Perseids were probably about 75% of the meteors for me. However in the desert, you see many more sporadic meteors than I would here in NJ, so probably about 2/3 were Perseids. Of course they can travel in many directions, as the attached image of the Leonids with an all sky camera show. But if you project the path backwards, they all come from a common point. Credit & Copyright: Juraj Toth (Comenius U. Bratislava), Modra Observatory <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 14, 2007

Is that one of your images MeteorWayne???? Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 14, 2007

No, and I forgot to add the credt. Thanx for reminding me. I could not take that long an image here due to the light pollution. <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 14, 2007

Very true, I have that problem too. I wondered if you might have travelled somewhere really dark to take it. Anyhow its a moot point. Have you done any meteor photography??? Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Aug 14, 2007

I've done a little, but I find it a great distraction from observing. While the images can be nice (when you get lucky) only the brightest meteors or recorded on film. The njaa is installing a meteor video camera, perhaps on day it will be on line. Then you can watch all the planes landing at Newark, LaGuardia, Kennedy, Philadelphi Intl, Lehigh Valley....et al <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

famw · Aug 14, 2007

Hi Wayne, my name is Fred Weber from the South Jersey/Philadelphia area . You probably will not remember me. A long time ago I was a member on the meterobs list when I first got really in meteor onserving and counting. I left the list because I am not as serious of an observer. I usually go out for the bigger showers like the Perseids & Leonids. But I have recently begun to branch out a little when I went out this May for the eta-Aquarids. But of course it was a bigger shower. So with the New Moon this year I had my fingers and toes crossed that the South Jersey/Perseid jinx would not come per usual. My last Perseid report has not be since 2002. It is usually rainy or cloudy at my dark sky location at the Belleplain Forest in Cape May County so the New Moon was a welcomed sight. It was cool & very clear on Saturday night and I got some great meteors including a very nice double -2 at 0437 UT. I packed it in at 0732 when it got cloudy. The next night the South Jersey Astronomy Club held one of their public Star Parties and I had car lights in my face all night as the cars came up and down the road where I sit all night (and they use their high beams!!!) Everything was basically the same from the night before except that it was a little warmer but still there was a light haze from the smoke from people's heaters because it has been cool here as you know. So when the cars would drive by the sky gets washed out a little. But I endured. BUT... at around the witching hour at 0600 UT the clouds started rolling in. Patchy for a while. I could see through the holes at Cassiopeia & Pegasus and sometimes Perseius but I had to pack it in at 0732 when I could only see Saturn laughing at me as he was the only thing lit in the sky. But it was the best 2 nights I have had since that Leonid shower that produced the -15 bollid with that tail that lasted for 9 minutes. You see since 2001 I have lost a lot of weight from gastric b

MeteorWayne · Aug 14, 2007

Well hi again Fred. Your name rings a bell, but honestly don't recall a lot of detail. To answer your question, With a dozen years of experience, I now estimate meteor magnitudes to the nearest half magnitude when possible. So if I call a meteor Magnitude +2.5, the +2 pile gets half a meteor, and the +3 pile gets half a meteor. When you add them up sometimes there's a half a meteor left over, that's the 0.5. I didn't start doing that until after about 5 years, a few thousand meteors, and many hundred hours. It's not really necessary, but if a meteor is magnitude +2.5 and I know it, it would bother me to assign it to +2 or +3. This is an approved procedure. I know what you mean about the headlights. It was public night at the njaa, and I gave a meteor talk about 9:15 EDT, to surprising rousing applause. But the parking lot was packed, about 60 cars in a 40 car lot. Once I started observing (10:30 EDT), I had to pick a less than ideal location, and still was plagued by people leaving until about 2 AM; after that is was only considerate members who understand and respect my passion. No smoke here, so it wasn't terrible. The peak night, Sat nite/Sun AM was clouded out from midnight till 5:30 AM....just after twilight the clouds passed and it was deep blue skies and clear as a bell. Figures <img src="/images/icons/laugh.gif" /> Still, I can't complain. I got 5 1/2 hours Sat night, and another 6 last night, which exceeds my Perseid viewing time for at least the last 8 years. I had 63 Perseids Sat night, and 78 last night. Hope I get to meet you some time. Meteor Wayne <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

Testing · Aug 14, 2007

Sleep is good. Back into the sky after 30 years. My new friends have two observing locations nearly ideal, the high country hard to beat. It was chilly on the deck Sat. night on the mountain, zipped the bag all the way up. Sun. night my friends wife drug a mattress outside with two dogs to keep her warm at 2200'. <div class="Discussion_UserSignature"> </div>

famw · Aug 14, 2007

One time a long time ago you made an offer to come up and observe and to visit. But like I said that was a long time ago and I'm sure you do not remember. But I do hope someday to visit when the shower is of the kind that is well worth the trip but not the kind that would attract too many of the public, not that I'm against the public mind you, I am one of them. <img src="/images/icons/smile.gif" /> I think you know what I mean. Like Saturday when it was still good enough to be out and quiet enough to keep the general public in their house <img src="/images/icons/laugh.gif" /> I will look forward to learn more again now that I have found this board. Though once again I must admit minimal knowledge as even to my rating the magnitude of the meteors. I still have to look up the magnitudes before I go out and as I write this, still do not remember them. So what I can learn from you and the rest of the people here will be great. I will be going to the Franklin Institute this coming Thursday, of course if it is not cloudy like it was in June. The second Thursday of every month in the summer, Derek Pitts has the public in for star gazing. July was outstanding. They had a members thing there as well so it was packed. But I stayed until most of the people left and that's when they bring out the big gun lenses and got to see Jupiter up close and personal. I got to speak to people that used to go to the Perseid parties that the FI used to throw up in Neshaminy back in the old days. I could never go to them but heard stories about them from this great family that stayed late like I did. So I'll be there with my reports to talk with whomever will listen and with the people that were there last month. It was a great time. I'm hoping to get out 9/1. I know I will have to be very patient and keep my eye on the sky. That would be the first time I'd be out on a slower rate shower. But with my luck it will be cloudy. The South Jersey/Philadel

deapfreeze · Aug 15, 2007

I sat out Saturday night Sunday morning for 2 hours and saw 20 in total. I sat out again Sunday night Monday morning and saw a total of 63. Thats not to bad from my own backyard. I am glad I live in a small city. <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> William ( deapfreeze ) Hooperhttp://deapfreeze-amateur-astronomy.tk/ </div>

MeteorWayne · Aug 20, 2007

The IMO's On the Fly ZHR page here has received gobs of data, and added a new feature, a close up on the Maximium +/- 48 hours. The Maximimum ZHR is 108 +/- 3 at course resolution, and 112 +/- 4 at finer resolution. occurring between 2200 and 2300 UT on Aug 12th, a bit earlier than expected. Of course, this is raw data, and full analysis will take quite a while. As of now, 18558 Perseids have been reported in 2056 observing intervals from 173 observeres in 29 countries. I still have one more report to file for the morning of the 18th, so that total will be going up <img src="/images/icons/smile.gif" /> Meteor Wayne <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

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