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Observing Reports:
Leonids: 2002,
November 18-19
Observers:
Mark Pollock, Ian Martin,
Mario Di Maggio,
Morton Henderson,
Mark Hill, Dave Gavine,
Colin Anderson,
Neil Grubb
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Mark Pollock
Renfrewshire
In preparing for going out, I checked the latest
satellite images which showed thin high level cloud over
most of southern central Scotland. But getting outdoors
showed large clear gaps with only barely detectable hazy
patches.
I jumped in the car and went Loch Lomond side only to
find fog. So I cut across country and went to
Stockiemuir, north of Milngavie, where I was able to find
a car parking space which gave a good horizon everywhere
except west. I was using a small forest to block
the moonlight behind me.
Observing started about 0325 and gave me plenty of time
to set up the video camera on the tripod inside the car
looking through the open sunroof. The horizons seemed to
be surrounded by cloud of various density but it was
clear overhead where it mattered most. Winds were
light from E/NE and atmosphere was remarkably still. I
estimated that the bright moon reduced the visible limit
to +3.5 maybe even pushing +4 at times.
With flask of coffee to hand, peripheral vision started
to pick up many fainter meteors then one really bright
one with a persistant train for 2 or 3 seconds which
streaked through Gemini. Boy, were these things
fast !!!
I aimed the camera at that spot and started recording. On
LP, the tape would
give me one & half hours recording time. I wasn't
getting much on camera in Gemini and I was seeing more
fainter ones to the north of the radiant and through Ursa
Maj. Decided to aim just north of radiant with gamma
leonis in bottom right of frame which took in the feet of
the bear as well.
0356 hrs there was a burst of activity which lasted about
10 or 11 minutes during which time I estimated there was
a visual meteor every second or so. Unfortunately, only a
few within the camera frame. Distinct lack of
fireballs though !!
There followed a period of apparent inactivity from 0410
to 0420 with nothing much happening anywhwere in the sky.
Then it exploded. I was counting 3 or 4 per second - most
around +2 or +3 mag. Still no fireballs. This lasted
about 15 minutes before abruptly calming down again. I
remained in situ till 0500 hrs but there was to be no
repeat - that was it !
The camera did reasonably well aimed north of the radiant
with a number of frames looking good for potential
layering and compositing. I've uploaded it to the image
gallery of my own web-site at http://astroscot.bravepages.com
Over the whole evening, I saw only one fireball - and
that wasn't even a Leonid. It was a sporadic; came
from the west, overhead, then disappeared as it reached
the tail of the Plough. But it was bright - it left
momentary shadows. It would have been great to have
seen the whole event without the moon there but, it was.
They came, they went, but for me, the Leonids did
not conquer as they had been hyped up to do. Impressive
though it was.
Tried logging on to NASA TV when I got back home to catch
the USA event, but
the server was jam-packed and I couldn't get logged on.
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Ian Martin
Renfrewshire
I awoke at 2.15 and went out suitably
attired. Conditions were not
too good patchy cloud or hazy cloud. However I was
rewarded early with a
couple of bright fireballs. Soon became aware that
meteors were never evident near Capella, Orion, Gemini,
indeed best area seemed to be Leo near the radiant or in
Ursa Major.
A distinct peak was noted at 3.00am followed by another
at about 3.15-20. At 3.35 decided I need some sleep.
All the meteors I saw were bright greater than -1 many
leaving ionisation trails.
Only saw one faint meteor. Assumed that this was the
effect of the Moon and
the ever present haze. Due to cloud, haze and Moon
decided against
photography - film would have fogged in minutes.
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Mario Di Maggio
Glasgow Science Centre
Yesterday (18/11/02) after the final astronomy night
class (and late-night movie) in the ScottishPower Space
Theatre, seven brave members of staff and four members of
the public made their way to the Campsies Hills (10 miles
north of Glasgow) to observe the Leonid Meteor shower.
Although conditions were initially not very promising, by
02:00 the sky had cleared enough to reveal a glorious
full Moon and sparkling array of stars and planets. A
regular stream of meteors (shooting stars) made the cold,
wind and general discomfort more than worthwhile!
Despite the ever-present layer of thin, high cloud (and
dazzlingly bright full Moon), at first we observed about
25-40 meteors per hour. Some were very dramatic with
bright burning centres, at times multicoloured (red,
white and green), leaving behind long trailing wisps of
smoke. See attached examples of Leonid photos coming in
from the USA right now (images courtesy
of SpaceWeather.com at:
http://science.nasa.gov/spaceweather/meteors/gallery_18nov01.html
)
Then, right on time, as predicted by the world's foremost
Leonid experts, at around 03:50 the rate of shooting
stars began to increase dramatically. We counted a total
of 194 meteors between 03:55 and 04:25 - which is a rate
of approx. 400 per hour.
Yet if we take into account that we were observing with a
bright full Moon in the sky, as well as approx. 55% wispy
cloud cover, we can safely estimate the actual rate to
have been much higher than 400 per hour - perhaps
800-1000 per hour? Due to our viewing conditions, we saw
all the big ones - and enjoyed an unforgettable and truly
once-in-a-lifetime experience all the same.
That makes two out of two uniquely successful
ScottishPower Space Theatre astronomy field trips since
opening in February this year! One was on a Sunday
evening (May 5th conjunction of five planets) and one on
a freezing Tuesday winter morning in the mountains - yet
all who attended would agree that sometimes you have to
put personal comforts aside to see the Universe at its
best.
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Morton
Henderson
Renfrewshire
After watching the weather forecasts all day I
decided that I should head north. Ended up on the A9
trying to outrun the clouds. Around 3:15am I gave
up trying to find perfect conditions and settled for a
sky with lots of patchy and hazy cloud. By then I
was only 25 miles short of Inverness!
Saw lots of bright meteors and some faint ones, but most
of the faint ones would have been lost in the
clouds. There were a few memorable fireballs but I
don't think I captured any on film. Activity seemd
to increase dramatically around 03:55 for a couple of
minutes then died down again and I thought that was a
somewhat disappointing peak. However, it increased
again
at 04:10 and remained high for the next 10 minutes, with
sometimes two or three per second but certainly no more
than a few seconds between each one.
Around 04:40 the cloud increased so I packed up and
started for home. However, I frequently stopped in laybys
for 5 minutes to check the conditions and they steadily
improved as I headed south (typical!). Each time I
was rewarded with several Leonids, most of them pretty
bright and
many obviously green in colour. As dawn broke I was
near Pitlochry and the sky was almost perfectly clear so
I stopped for 15 minutes and saw several more fireballs.
Similar to what Mark Hill said, I saw a number of point
meteors and many left smoke trails. There were also
quite a few meteors heading TOWARDS Leo from the
direction of Bootes. Not sure what shower they may
have come from?
Overall impression? I saw many more meteors from
the Algarve in 1999 but they were largely pretty
faint. My viewing conditions were far from ideal at
maximum this time. However, I have never seen so
many bright meteors in such a short space of time.
Well worth driving around all night!
In addition to the meteors, I saw two Iridium
flares. Plus at various times during the night a
deer, a large owl, a fox and numerous rabbits threatened
to get friendly with my car's front bumper.
Fortunately there were no incidents!
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Mark Hill
Renfrewshire
Hello all, did anyone have a chance to look for
the leonids this morning?
I was surprised to see it was clear around 03:30 and
headed up the Gleniffer Braes south of Paisley, from
around 03:45 till 04:10 the meteors were constant around
1 every 5 - 10
seconds then at 04:15 there seemed to be a burst of
meteors which was impossible to count. There were many
bright meteors but no spectacular fireballs which had
been predicted, these possibly came with the second peak
which the Americans would see. With adverted vision the
sky was full of streaks at the greatest activity many
were faint swift meteors near the radiant. I also saw a
point meteor at the radiant which was just a flash and a
smoke ball.
Activity seemed to drop and pick up again before the cold
eventually sent me homeward.
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Dave Gavine
Edinburgh
Leonids 18/19 Nov :
watch from Joppa, Edinburgh 0310-0500 in poor conditions,
3/8 to 5/8 cloud & patchy mist, moon, limiting mag
about 2.5 to 4 at best, 101 Leonids, slight peak about 0405-15 then
0400, hard to say. Mostly mag 1 or 2, one at mag -4, one
at -3, a few at -2. |
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Colin
Anderson
Eaglesham
An unexpectedly clear
morning on the 19th November prompted me to drive out to
the moors to watch what promised to be the last big
Leonids of my lifetime. I arrived at my observing
location approx. 03:00 hrs GMT, but the real activity started
at 03:18 hrs. I would estimate between 5-7 meteors per
minute up till about 03:30, many very bright and leaving
greenish trails which lasted for several seconds. At
03:24 there was an extremely bright fireball (estimate
magnitude -2/-3 ) streaking South West.....fantastic!
A slight lull between
03:30 and 04:00 with approx. 1 to 2 per minute until
another peak between 04:00 and 04:15 with up to 10
meteors per minute. Another bright fireball at 04:06 in
approx the same direction as the first and just as
bright.
A great display and well worth the early rise! |
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Neil Grubb
Edinburgh
It was good to meet up
again at Scottish Astrofest 2002. I did get up to watch
the Leonids although I was somewhat restricted by being
on call for the hospital that night. Nonetheless I made
detailed observations between 0355 and 0500h, as follows:
Conditions:
Not ideal, average 20% cloud cover on average, high haze
with limiting visual magnitude 3.5. Viewed from Cameron
Toll, South Edinburgh.
0355-0400
10
0400-0405 17
0405-0410
12
0410-0415 10
0415-0420 11
0420-0425
18
0425-0430 6
0430-0435 6
0435-0440 4 (one very bright, estd mag
-4.0, passed through bowl of U Major)
0440-0445 2
0445-0450 6
0450-0455 3
0455-0500 1 (deteriorating cloud cover)
These are similar
to the counts that Horst Meyerdierks obtained for the
same period from Earliburn.
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