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NLC 2018-05-17/18

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: 2018-05-17/18

   UT     forms  bright   height   azimuth   comments
                  ness   top bot  left rght  e.g. weather
--------  -----  ------  --- ---  ---- ----  --------------------------------
21:00:04  0                                  cloud patches to h 10
21:15:05  0                                  cloud patches to h 10
21:45:09  0                                  cloud patches, cirrus making fake NLC
22:00:19  0                                  cloud patches, cirrus making fake NLC
22:15:32  0                                  cloud patches
22:30:53  X                                  cloud patches
22:45:47  X                                  cloud patches, cirrus making fake NLC
23:01:24  X                                  cloud patches to h 10
23:16:24  X                                  cloud patches to h 10
23:31:24  X                                  cloud patches to h 5
23:46:24  X                                  cloud patches to h 5
00:02:33  X                                  cloud patches
00:16:25  X                                  some cloud
00:31:24  X                                  some cloud
00:46:25  X                                  cloud patches to h 5
01:01:24  X                                  cloud patches to h 10
01:16:24  X                                  some cloud
01:31:24  X                                  some cloud
01:45:53  X                                  some cloud
02:00:32  X                                  some cloud
02:15:18  X                                  some cloud
02:30:09  X                                  some cloud
02:45:01  X                                  some cloud
03:00:01  X                                  some cloud
03:15:01  X                                  some cloud

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 absence of NLC are reported to the NLC Observers' Home Page:

Name: Horst Meyerdierks
Country: Scotland
Location: Edinburgh
Date: 2018/05/17-18
Start: 21:00
End: 22:15
Comments: cloud patches

Images

No NLC has been observed, hence no images are made available here.