
NLC 2013-06-13/14
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: 2013-06-13/14 UT forms bright height azimuth comments ness top bot left rght e.g. weather -------- ----- ------ --- --- ---- ---- -------------------------------- 21:45:05 X widespread cloud 22:00:05 X overcast 22:15:05 X overcast 22:30:08 X overcast 22:45:10 X overcast 23:00:19 X almost overcast 23:15:19 X overcast 23:30:19 X almost overcast 23:45:18 X widespread cloud 00:00:32 X widespread cloud 00:15:32 I 1 15 widespread cloud 00:30:32 I 2 18 patchy cloud 00:45:32 I 2 15 -30 >35 few cloud patches 01:00:18 I 2 18 -30 >35 cloud below 01:15:10 I 1 15 0 >35 cloud below 01:30:03 I 1 12 -10 >35 cloud below 01:45:03 0 cloud to h 5 02:00:01 0 cloud to h 5 02:15:02 0 cloud to h 5 02:30:01 0 cloud to h 5 02:45:01 0 cloud to h 5 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: 2013/06/13-14 Start: 00:15 End: 01:30 Forms: I Max elevation: 18 Max brightness: 2 Comments: <a href="http://www.chiandh.me.uk/nlccam/20130613-14.shtml">Images</a>. Cloudy. 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.
UT exp A hSun h15 h85 stretch image (masked) -------- ------ ----- ----- ----- ----- ----- ------------------- 00:15:32 8.000 0.6 -10.8 -2.5 21.3 0-255 q4494.jpg m4494.jpg 00:30:32 8.000 4.1 -10.7 -2.4 22.3 0-255 q4499.jpg m4499.jpg 00:45:32 8.000 7.6 -10.5 -2.3 25.4 0-255 q4503.jpg m4503.jpg 01:00:18 4.000 11.0 -10.2 -2.0 31.9 0-255 q4506.jpg m4506.jpg 01:15:10 2.000 14.5 -9.7 -1.7 46.8 0-255 q4509.jpg m4509.jpg 01:30:03 1.000 17.9 -9.1 -1.3 83.2 0-255 q4511.jpg m4511.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).