
NLC 2016-07-01/02
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: 2016-07-01/02 UT forms bright height azimuth comments ness top bot left rght e.g. weather -------- ----- ------ --- --- ---- ---- -------------------------------- 21:45:05 X 22:00:05 X 22:15:05 X 22:30:06 0 cloud to h 5 or 10, higher patches 22:45:08 0 cloud to h 5 or 10, higher patches 23:00:19 0 cloud to h 5 or 10, higher patches 23:15:19 0 some cloud to h 5 23:30:32 0 some cloud to h 5 or 10 23:45:32 0 some cloud to h 5 or 10 00:00:19 NLC 1 00:15:18 IV 2 8 350 >35 00:30:19 IV 2 8 <330 >35 00:45:19 IV 3 10 <325 >35 01:00:19 IV 3 12 <325 >35 01:15:10 I,IV 3 14 <325 >35 01:30:10 I,IV 3 16 <325 >35 01:45:03 I,IV 2 15 some cloud patches, possible NLC to h 20 02:00:02 II? 1 25 some cloud patches, NLC may be cirrus 02:15:05 0 cloud to h 5 or 10, some to h 20 02:30:02 X 02:45:01 X 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: 2016/07/01-02 Start: 00:00 End: 02:00 Forms: I,II,IV Max elevation: 16 Max brightness: 3 Comments: Some cloud. http://www.chiandh.eu/nlccam/20160701-02.shtml 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) -------- ------ ----- ----- ----- ----- ----- ------------------- 00:00:19 4.000 356.1 -11.0 -2.6 19.4 0-255 q3297.jpg m3297.jpg 00:15:18 4.000 359.7 -11.1 -2.6 18.7 0-255 q3302.jpg m3302.jpg 00:30:19 4.000 3.2 -11.0 -2.6 19.2 0-255 q3307.jpg 00:45:19 4.000 6.7 -10.8 -2.5 21.1 0-255 q3312.jpg 01:00:19 4.000 10.2 -10.5 -2.3 25.3 0-255 q3317.jpg 01:15:10 2.000 13.6 -10.1 -2.0 34.1 0-255 q3320.jpg 01:30:10 2.000 17.1 -9.5 -1.6 55.6 0-255 q3324.jpg 01:45:03 1.000 20.5 -8.9 -1.1 104.5 0-255 q3326.jpg m3326.jpg 02:00:02 0.500 23.9 -8.1 -0.4 144.1 0-255 q3328.jpg m3328.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).