NLC 2013-07-05/06
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: Royal Observatory Edinburgh, 55.9N 3.2W
unattended compact camera with limited field of view
A ~325-35, h ~0-40; images every 15 min
Date: 2013-07-05/06
UT forms bright height azimuth comments
ness top bot left rght e.g. weather
-------- ----- ------ --- --- ---- ---- --------------------------------
21:45:05 0 thick haze to h 15
22:00:05 0 thick haze to h 10
22:15:06 0 thick haze to h 10
22:30:07 0 thick haze to h 10
22:45:09 0 thick haze to h 10
23:00:19 0 thick haze to h 10
23:15:31 0 thick haze to h 10
23:30:32 X thick haze to h 10
23:45:53 X thick haze to h 10
00:00:53 X thick haze to h 10
00:15:54 X thick haze to h 10
00:30:53 X thick haze to h 10
00:45:54 X thick haze to h 10
01:00:53 NLC 1 10 above thick haze
01:15:32 NLC? 1 12 above thick haze
01:30:19 0 thick haze to h 10
01:45:19 0 thick haze to h 10
02:00:10 0 thick haze to h 10
02:15:07 0 thick haze to h 10
02:30:05 0 thick haze to h 10
02:45:05 0 thick haze to h 10
03:00:04 0 thick haze to h 10
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: Edinburgh
Date: 2013/07/05-06
Start: 01:00
End: 01:15
Forms: NLC
Max elevation: 12
Max brightness: 1
Comments:
<a href="http://www.chiandh.me.uk/nlccam/20130705-06.shtml">Images</a>.
Above thick haze.
forms: I: veil
II: bands
III: waves
IV: whirls
NLC: 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.
UT exp A hSun h15 h85 stretch image (masked) -------- ------ ----- ----- ----- ----- ----- ------------------- 01:00:53 15.000 10.2 -10.9 -2.5 20.9 0-255 q5845.jpg m5845.jpg 01:15:32 8.000 13.6 -10.4 -2.2 26.9 0-255 q5849.jpg m5849.jpg exp: Exposure time in seconds (200 ISO, f/2.8). 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).
