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(meteorobs) August 11, 2002 Meteor Observations from Southern California
Irv,
Heres my pal Bob Lunsford report for Sat night/Sun morning from Laguna.
not too bad for 2 nights pre-max.. 162 meteors in 5 hours (11pm-4am)
including exploding fireballs
We're on for Monday night still.. Right?
JoseJ
>From: Robert Lunsford <lunro.imo.usa@coxdot net>
>Subject: (meteorobs) August 11, 2002 Meteor Observations from Southern
>California
>Date: Sun, 11 Aug 2002 08:37:59 -0700
>
>Saturday was warm and humid along the coast. It was very hot and dry
>inland. My observing spot must have been over 100F during the afternoon.
>The sky was hazy most of the day due to continued smoke from the local
>brush fires. Late afternoon had some high level moisture in the form of
>cirrostratus clouds. That was very depressing! I checked the satellite
>picture and noticed this was a temporary setback and that the clouds would
>soon move out. When I arrived at my observing sight the sky was a bit hazy,
>but otherwise clear. I could not believe how warm it still was! The asphalt
>driveway was still warm from the day's heat. The air above it was also nice
>and toasty. I gave the thermometer (located on top of the truck cab) 30
>minutes to settle. At 12:17am it read 71F which is near a record high for
>observing sessions. It must be remembered that just a few years back I had
>frost during the Perseids. I like these temperatures better!
>
>Activity was impressive right from the start. There were a couple of long
>lulls during the first two hours but activity really took off during the
>middle hour. The Perseids were impressive with rates approaching 30/hr.
>There were 6 Perseids of negative magnitudes, the best being a double burst
>-5 yellow fireball in Cetus that left a 20 second train. 21 of the 90
>Perseids seen had persistent trains.
>
>The remainder of the showers produced nothing of note rate wise. There was
>a blue -4 Alpha Cap fireball low in the north that was impressive.
>The Northern Apex radiant came back to life tonight producing 6 swift
>meteors. The Southern Apex was also active averaging one meteor per hour.
>
>I was actually lucky to get this session in as there was another large blob
>of moisture just to my south. Another few miles to the north and I would
>have been looking at the bottom of the clouds. The sky gods were kind
>tonight! Let's see how I rate again tonight.
>
>August 11, 2002
>
>0647-0747 UT 1.00 6.68 1 NDA 9 PER 1 NPX 6 SPO 17 TOTAL
>
>0747-0847 UT 1.00 6.70 1 CAP 8 PER 1 NDA 1 SDA 1 NPX 5 SPO 17 TOTAL
>
>0847-0947 UT 1.00 6.64 1 CAP 3 KCG 3 NDA 20 PER 1 SDA 1 NPX 2 SPX
> 14 SPO 45 TOTAL
>
>0947-1047 UT 1.00 6.59 29 PER 1 SDA 3 NPX 2 SPX 12 SPO 47 TOTAL
>
>1047-1147 UT 1.00 6.54 24 PER 1 SPX 11 SPO 36 TOTAL
>
>TOTALS: 5.00 6.63 2 CAP 3 KCG 4 NDA 90 PER 2 SDA 6 NPX 5 SPX
> 48 SPO 162 TOTAL
>
>The first column gives the period watched stated in Universal Time (UT)
>which is PDT + 7 hours. The second column gives the percent of that
>particular hour actually spent observing the sky. A cassette recorder was
>used to record data tonight so no time was lost recording. The third column
>gives the average limiting magnitude estimated during each period. The last
>several columns list the activity seen during each period. I was facing
>northeast at an altitude of 60 degrees during the entire session. No breaks
>were taken. CAP = Alpha Capricornids, KCG = Kappa Cygnids, NDA = Northern
>Delta Aquarids, PER = Perseids, SDA = Southern Delta Aquarids, NPX =
>Northern Apex, SPX = Southern Apex, and SPO = Sporadics (random activity).
>
>Location: Deerhorn Valley 116 45' 21" W 32 41' 21" N ELE = 667 m
>
>Bortle Scale Estimate: Class 3: Rural Sky
>
>Beginning Temperature/Relative Humidity: 71 F (22 C) 14%
>Ending " " " 67 F (19 C) 21%
>
>MAGNITUDES:
>
>CAP: -4 (1) +1 (0) +2 (0) +3 (0) +4 (0) +5 (1) +6 (0) AVE: +0.50
>KCG: 0 (0) +1 (0) +2 (1) +3 (1) +4 (0) +5 (1) +6 (0) AVE: +3.33
>NDA: 0 (0) +1 (0) +2 (1) +3 (2) +4 (1) +5 (0) +6 (0) AVE: +3.00
>PER: -5 (1) -3 (1) -2 (3) -1 (1) 0 (4) +1 (10)
> +2 (22) +3 (25) +4 (15) +5 (7) +6 (1) AVE: +2.19
>SDA: 0 (0) +1 (0) +2 (1) +3 (0) +4 (1) +5 (0) +6 (0) AVE: +3.00
>NPX: 0 (0) +1 (1) +2 (0) +3 (3) +4 (0) +5 (1) +6 (1) AVE: +3.50
>SPX: 0 (0) +1 (1) +2 (0) +3 (2) +4 (1) +5 (1) +6 (0) AVE: +3.20
>SPO: 0 (1) +1 (2) +2 (7) +3 (13) +4 (14) +5 (7) +6 (4) AVE: +3.54
>
>Bob Lunsford
>San Diego, CA USA
>
>
>
>
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