NLC 2014-07-04/05
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: 2014-07-04/05
UT forms bright height azimuth comments
ness top bot left rght e.g. weather
-------- ----- ------ --- --- ---- ---- --------------------------------
21:45:01 0 some cloud patches
22:00:02 0 some cloud patches
22:15:01 0
22:30:02 0
22:45:02 0
23:00:10 0
23:15:19 0
23:30:19 0 cloud above h 15
23:45:19 X cloud above h 10
00:00:19 X almost overcast
00:15:19 X almost overcast
00:30:32 X widespread thick cirrus
00:45:32 II 2 15 15 >35 throuh cirrus
01:00:19 I,II 2 through cloud
01:15:19 NLC 2 through cloud
01:30:18 X thick cirrus
01:45:10 X thick cirrus
02:00:10 X thick cirrus
02:15:06 X almost overcast
02:30:05 X overcast
02:45:05 X overcast
03:00:04 X overcast
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 main periods of absence of NLC are reported to the NLC Observers' Home Page:
Name: Horst Meyerdierks Country: Scotland Location: Edinburgh Date: 2014/07/04-05 Start: 21:45 End: 23:30 Comments: Some cloud.
The periods of positive sightings of NLC are reported to the NLC Observers' Home Page:
Name: Horst Meyerdierks
Country: Scotland
Location: Edinburgh
Date: 2014/07/04-05
Start: 00:45
End: 01:15
Forms: I,II
Max elevation: 15
Max brightness: 2
Comments:
Through cloud.
<a href="http://www.chiandh.me.uk/nlccam/20140704-05.shtml">Images</a>.
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) -------- ------ ----- ----- ----- ----- ----- ------------------- 00:45:32 8.000 6.6 -11.0 -2.6 18.8 0-255 q4799.jpg 01:00:19 4.000 10.1 -10.7 -2.4 22.2 0-255 q4803.jpg 01:15:19 4.000 13.6 -10.3 -2.1 29.0 0-255 q4807.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).
