(meteorobs) Eta Aquarids from Iowa

[Robert Lunsford]

Paul and All,

I am envious of your observation as I was clouded out here in Southern California. It appears your observation was at least one day 
before maximum as indicated by the live ZHR graph provided by the IMO. Although the official IMO calendar lists May 6 as the 
maximum, recent video results show May 7th to be the peak. This corresponds well with the live ZHR graph.

I look forward to seeing more of your observations!

Bob Lunsford

-----Original Message----- 
From: pmartsching at mchsi.com
Sent: Friday, May 06, 2011 4:45 PM
To: meteorobs
Subject: (meteorobs) Eta Aquarids from Iowa

McFarland Park 4 miles NE of Ames, Story County, Iowa, USA
93 deg 34 min W;  42 deg 05 min N; elevation: 318 meters

Antihelion
Eta Aquarids
Sporadics

06 May 07:05-08:05 UT 41 deg F; dew pt 35 deg F; wind W 8 mph; clear; LM 5.7; facing E 50 deg; total teff 1.0 hr.
Antihelion: one: -2 (yellow)
ETA: none
Sporadics: five: 0; +2; +3(2); +4
Total meteors: six

08:05-09:05 UT 40 deg F; dew pt 34 deg F; wind SE 3 mph; patches and streaks of thin, hazy cloud; LM 5.4; facing E 50 deg; total 
teff 1.0 hr.
Antihelion: none
ETA: three: -3; +1(2)
Sporadics: one: +2
Total meteors: four

09:05-09:50 UT 39 deg F; dew pt 34 deg F; wind calm; more patches and streaks of thin, hazy cloud; after 09:20 twilight coming on in 
NE: LM ~5.0; facing SE 50 deg 09:05-09:30; facing S 50 deg 09:30-09:50; total teff 0.75 hr.
Antihelion: none
ETA: three: -2; +1; +2
Sporadics: five: +1; +2; +3(2); +4
Total meteors: eight

The first ETA of the morning was seen at 08:36 UT.  The best ETA was at 08:57 UT mag -3 yellow; two second train; very long; ended 4 
degrees beyond Arcturus.  This was the longest and brightest ETA I have ever seen.  Second best ETA was at 09:33 UT mag -2 white; 
one second train; going toward Sagittarius.  Possibly might have seen one or two faint ETA's if sky had been better?  All the ETA's 
seen this morning had a least a brief train.




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