(meteorobs) Obs: 22 Apr 2009
David Oesper
oesper at mac.com
Tue May 5 20:27:08 EDT 2009
(Please forgive me if this gets posted twice. I posted it a day ago and
it still hasn't shown up so I am posting it again.)
22 April 2009 0628-1000 UT (CDT 22 Apr 1:28 a.m. 22 Apr 5:00 a.m.)
David Oesper
NW of Dodgeville, Wisconsin
43 00 39.5 N, 90 16 05.4 W, ~1110 ft.
Method: Visual, digital voice recorder, talking clock
Zenithal Sky Brightness: 21.45 mag./sq." @ 0626 UT
Limiting Magnitude: 6.3 [(SQM-8.89)/2]+ 0.04
SQM = Sky Quality Meter
Sky Conditions: Partly Cloudy
0628 - 1000 UT
Lyrids: 9
Other: 3
Total Meteors: 12
Maximum observed activity under clear sky conditions: 6 Lyrids between
0908 and 0927 UT.
0626 30% clouds
0628 start of session
~0635 50% clouds
0643 sky conditions improving
0647 +2 SPO, Head of Draco
0700 sky conditions have worsened
0701 +0 LYR
0708 very overcast
0713 95% clouds
0757 conditions improving
0800 conditions "tolerable", still some clouds
0808 conditions improving
0809 +2 SPO, along the length of Draco from SW sky
0818 +1 LYR
0820 +1 SPO, SE to NW through N. Oph
0823 10% cloud cover, best it has been since start of session
0833 +1 LYR
0900 clear
0908 +1 LYR
0914 -2 LYR, w/persistent train, going towards Oph
0918 +2 LYR, +1 LYR
0922 +0 LYR
0927 +1 LYR
0932 ISS passing SW to SE through Sgr
0941 -5 Iridium flare
0944 Jupiter has cleared the trees
0947 sky brightness measurements
1000 end of session
Zenithal Sky Brightness: 21.06 mag./sq." @ 0947 UT twilight
Limiting Magnitude: 6.1 [(SQM-8.89)/2]+ 0.04
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