|
Aurora in Slovenia January 21, 2005
Large and complex active region AR 10720 produced a major X7.1/2B proton flare at 07:01 UTC on January 20, 2005. Although off-center, a large and fast full halo CME was observed in LASCO imagery (at the time suffering greatly
under the intense radiation storm). CME shock front impacted late on January 21 (18 UTC), with strong IMF of almost 40 nT, high density and speed (in excess of 1000 km/s) and erratic Bz. Kp index reached 8 and the storm lasted 15 hours.
Unfortunately, a potentially fairly impressive display was greatly hindered by an almost full Moon high in the sky. Nevertheless, several observers observed and photographed auroral activity during the UTC evening of January 21.
If you also observed the aurora borealis (aka northern lights) from Slovenia, please send a report by e-mail!
Photographs from Kostanjevec, Slovenia (N46.39, E15.52)
by Javor Kac using 28-mm f/3.3 lens and Kodak 200 film
|
18:59:48 UT .. 462 sec
|
19:08:37 UT .. 285 sec
|
19:13:39 UT .. 348 sec
|
Photographs from Kostanjevec, Slovenia (N46.39, E15.52)
by Javor Kac using 37-mm f/2.8 lens and Fuji 800 film
|
19:01:50 UT .. 151 sec
|
19:04:48 UT .. 332 sec
|
19:14:19 UT .. 215 sec
|
21:12:14 UT .. 430 sec
|
22:16:55 UT .. 150 sec
|
Photographs from Verdun pri Novem mestu, Slovenia (N45.78, E15.22)
by Nejc Ucman using 18-mm f/5 lens and Canon EOS 300D digital camera at ISO 1600 (unless noted otherwise)
|
21:07 UT .. 54 sec
|
21:14 UT .. 44 sec
|
21:15 UT .. 37 sec
|
21:16 UT .. 46 sec
|
21:20 UT .. 28 sec
|
21:24 UT .. 41 sec .. ISO800
|
Photographs from Kamnica, Slovenia (N46.57 E15.61)
by Jure Zakrajsek using 18-mm f/3.5 lens and Nikon D70 digital camera at ISO 400 (unless noted otherwise)
|
19:08 UT .. 18 sec
|
21:12 UT .. 35 sec
|
21:29 UT .. 41 sec
|
22:19 UT .. 30 sec
|
22:40 UT .. 30 sec
|
22:43 UT .. 20 sec .. ISO800
|
22:57 UT .. 20 sec .. ISO800
|
Photographs from Kamnik and Mengesko polje, Slovenia (N46.2, E14.6)
by Tilen Cadez using Canon PS A80 digital camera at f/2.8 and ISO 400
|
20:15 UT .. 15 sec
|
20:42 UT .. 15 sec
|
20:44 UT .. 15 sec
|
20:45 UT .. 15 sec
|
Photographs from Senovo, Slovenia (N46.0, E15.5)
by Primoz Cigler using using zoom lens and Kodak 400 film
|
28 mm f/3.5 .. ~5 min
|
~40 mm f/4 .. ~3 min
|
Individual reports
Location: Kostanjevec (46.39N, 15.52E)
UTC Time and Date: 21.01.2005 - 19:01 (4 hours 43 minutes)
Observer: Javor Kac
Limiting magnitude: +5.8
Light pollution: low
Cloudiness: 0%
Limiting magnitude at the location of aurora: ca +5
Auroral activity: very low
Elevation of activity: 18 degrees
Types of activity:
(diffuse glow)
Comments: The most intense wave of acitvity came
at 19:01 UT with aurora extending from azimuth
330 to 030 and up to 18 degrees in altitude. The
aurora was seen until 19:22 UT. Aurora was again
picked up at 21:12 UT, centered at azimuth 020
and reaching to 12 degrees above the horizon.
This wave was seen until 21:25 UT. From 22:15 to
22:45 a very faint glow was seen above northern
horizon. From 23:35 to 23:44 there was again
a barely discernible glow from azimuth 350 to 030.
Location: Tunjice (N46.14, E14.32)
UTC Time and Date: 21.01.2005 - 19:05 (10 minutes)
Observer: Rok Palcic
Light pollution: low
Moon influence: high
Cloudiness: 0%
Auroral activity: medium to very low
Elevation of activity: 15 degrees
Types of activity:
(diffuse glows)
Comments: Quite intense activity with 15 degrees
over Alps which are quite high above horizon
(12 degrees) were seen from 19:05 until 19:15 UT
when red glare dissapeared. During that period
aurora was seen as red glare moving from azimuth
010 to 350 and then suddenly dissapeared. Some
activity (some faint light few degrees above
mountains) were present and observed until
20:30 UT. Then we did not observe any more.
Before 19:05 UT I didn't observe as well:(
Location: Senovo (46.2N, 16.5E)
UTC Time and Date: 21.01.2005 - 19:10 (2 hours 15 min)
Observer: Primoz Cigler
Light pollution: moderate
Moon influence: high
Cloudiness: 0%
Aurora activity: low
Elevation of activity: 20 degrees
(diffuse glows)
Comments:
Location: Slovenska Bistrica (N46.38, E15.52)
UTC Time and Date: 21.01.2005 - 19:13 (10 minutes)
Observer: Breda Kac
Light pollution: moderate
Moon influence: high
Cloudiness: 0%
Auroral activity: low
Elevation of activity: 15 degrees
Types of activity:
(diffuse glows)
Comments:
Location: Vodice (N46.2,E14.5)
UTC Time and Date: 21.01.2005 - 19:25 (10 minutes)
Observer: Gregor Vertacnik
Light pollution: moderate
Moon influence: high
Cloudiness: 0%
Auroral activity: very low
Elevation of activity: 15 degrees
Types of activity:
(diffuse glows)
Comments: Purple glow on the north, about 25°
long and up to 15° high. At 19:35 UTC glow suddenly
disappeared. Visibility was excellent.
Location: Plavje (45.57N, 13.78E)
UTC Time and Date: 21.01.2005 - 21:23 (1 hour 17 minutes)
Observer: Jure Atanackov
Limiting magnitude: +5.6
Light pollution: high
Cloudiness: 0%
Limiting magnitude at the location of aurora: ca +5
Auroral activity: very low
Elevation of activity: 10 degrees
Types of activity:
(diffuse glow) (rays)
Comments: Aurora first seen as a faint reddish glow
with two distinct whitish rays at azimuth 020. Rays
persisted for 5 minutes. Intermittent reddish glow seen
for another hour.
Location: Smarna Gora (46.13N, 14.47E)
UTC Time and Date: 21.01.2005 - 22:31 (18 min)
Observer: Jaka Ortar
Light pollution: low to moderate
Moon influence: high
Cloudiness: 0%
Aurora activity: low
Elevation of activity: 15-21 degrees
(diffuse glows)
Comments:
The text on this page is © 2005 by MBK Team.
|
