NLC 2010-06-11/12
In addition to the automatic camera, I observed and used a manual camera simultaneously, but in a different location.
BAA report
The report to the BAA Aurora Section gives an overview of the night, which times were cloudy, free of NLC, or with sightings of NLC.
Name of observer: Horst Meyerdierks
Location: Stichill Eastfield, 55.7N 2.4W
unattended dSLR with limited field of view A ~310-20, h ~0-40
images every 15 min
Date: 2010-06-11/12
UT forms bright height azimuth comments
ness top bot left rght e.g. weather
----- ----- ------ --- --- ---- ---- --------------------------------
21:30 0 about 20% overexposed
21:45 0 about 10% overexposed
22:00 0 about 10% overexposed
22:15 0 about 10% overexposed
22:30 0
22:45 0
23:00 0
23:15 I,II 1 15 340 0
23:30 I,II 2 15 ~330 10
23:45 I,III 1 15 335 0 cloud to h 7
00:00 NLC? 1 cloud to h 8
00:15 IV 1 10 5 338 5
00:30 IV 2 12 345 8
00:45 IV 2 15 345 cloud to h 6
01:00 NLC 2 12 345 >355 cloud to h 10
01:15 NLC 2 cloud nearby and below
01:30 II,IV 1 13 ~315 ~0 cloud nearby
01:45 IV 1 13 ~340 ~0 cloud to h 7
02:00 0
02:15 0
02:30 0
02:45 0
forms: I: veil
II: bands
III: waves
IV: whirls
NLC: other than or multiple of I-IV
0: no NLC
X: no decision possible (mist, cloud etc.)
brightness: 1: very weak
2: clearly detected
3: clearly visible
4: very bright
5: extremely bright
Name of observer: Horst Meyerdierks
Location: Pearie Law, 55.8N 3.6W
dSLR with limited field of view A ~325-35, h ~0-40
images every 15 min
also naked eye and 9x63 binoculars
Date: 2010-06-11/12
UT forms bright height azimuth comments
ness top bot left rght e.g. weather
----- ----- ------ --- --- ---- ---- --------------------------------
21:30 X cloud patches to h 12
21:45 0 few cloud patches to h 15
22:00 0 few cloud patches to h 10
22:15 0 few cloud patches to h 12
22:30 0 few cloud patches to h 10
22:45 X cloud in most parts of field
23:00 II 1 5 4 16 45 some cloud patches
23:15 II 2 15 5 347 45 some cloud patches
23:30 II,IV 2 14 343 45 cloud patches h 15 to 30
23:45 III 1 15 343 few cloud patches above h 30
00:00 IV 1 14 5 347 4
00:15 I,IV 1 12 4 350 ~20
00:30 I,IV 1 11 6 352 ~20
00:45 III,IV 2 15 6 ~330 ~15 end of watch
forms: I: veil
II: bands
III: waves
IV: whirls
NLC: other than or multiple of I-IV
0: no NLC
X: no decision possible (mist, cloud etc.)
brightness: 1: very weak
2: clearly detected
3: clearly visible
4: very bright
5: extremely bright
NLCnet report
The periods of positive sightings of NLC are reported to the NLC Observers' Home Page:
Name: Horst Meyerdierks
Country: Scotland
Location: Stichill
Date: 2010/06/11-12
Start: 23:15
End: 01:45
Forms: I,II,III,IV
Max elevation: 15
Max brightness: 2
Comments:
<a href="http://www.chiandh.me.uk/p/NLC_2010-06-11/12>Images</a>.
forms: I: veil
II: bands
III: waves
IV: whirls
O: other than or multiple of I-IV
brightness: 1: very weak
2: clearly detected
3: clearly visible
4: very bright
5: extremely bright
Name: Horst Meyerdierks
Country: Scotland
Location: Woolfords
Date: 2010/06/11-12
Start: 23:00
End: 00:45
Forms: I,II,III,IV
Max elevation: 15
Max brightness: 2
Comments:
<a href="http://www.chiandh.me.uk/p/NLC_2010-06-11/12>Images</a>.
forms: I: veil
II: bands
III: waves
IV: whirls
O: other than or multiple of I-IV
brightness: 1: very weak
2: clearly detected
3: clearly visible
4: very bright
5: extremely bright
Images
Listed below are the images with positive sightings of NLC. These have been processed merely to adjust the brightness for underexposure. For some, there may also be an unsharp-masked version of the image.
Stichill Eastfield
UT exp A hSun h15 h85 stretch image (masked) ----- ------ ----- ----- ----- ----- ----- ------------------------- 23:15 4.000 347.3 -10.4 -2.2 27.8 0-255 q29595.jpg m29595.jpg 23:30 8.000 350.8 -10.8 -2.4 21.7 0-255 q29600.jpg m29600.jpg 23:45 10.000 354.3 -11.1 -2.6 18.8 0-255 q29604.jpg m29604.jpg 00:00 10.000 357.8 -11.2 -2.7 17.4 0-255 q29608.jpg m29608.jpg 00:15 8.000 1.3 -11.2 -2.7 17.3 0-255 q29612.jpg m29612.jpg 00:30 4.000 4.8 -11.1 -2.6 18.3 0-200 q29616.jpg m29616.jpg 00:45 4.000 8.3 -10.9 -2.5 20.8 0-200 q29620.jpg m29620.jpg 01:00 6.000 11.8 -10.5 -2.2 25.9 0-255 q29625.jpg 01:15 4.000 15.3 -10.0 -1.9 36.9 0-255 q29628.jpg 01:30 2.500 18.7 -9.4 -1.5 65.8 0-255 q29630.jpg m29630.jpg 01:45 1.300 22.1 -8.6 -0.9 120.5 0-255 q29631.jpg m29631.jpg exp: Exposure time in seconds (400 ISO, f/3.5). A: Azimuth of the Sun (degrees). hSun: Altitude of the Sun (degrees, negative below horizon). h15: Max. altitude of sunlight at 15 km height (degrees). h85: Max. altitude of sunlight at 85 km height (degrees). stretch: Contrast stretch (0-255 means no stretch).
Pearie Law
UT exp stretch image (masked) ----- ------ ----- ------------------------- 23:00 5.000 0-255 q15248.jpg m15248.jpg 23:17 5.000 0-255 q15251.jpg m15251.jpg 23:30 8.000 0-255 q15252.jpg m15252.jpg 23:45 10.000 0-255 q15253.jpg m15253.jpg 00:00 10.000 0-255 q15254.jpg m15254.jpg 00:15 13.000 0-255 q15255.jpg m15255.jpg 00:30 10.000 0-255 q15256.jpg m15256.jpg 00:45 10.000 0-255 q15257.jpg m15257.jpg exp: Exposure time in seconds (200 ISO, f/3.5). stretch: Contrast stretch (0-255 means no stretch).
