NLC 2011-05-14/15

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 dSLR with limited field of view A ~325-35, h ~0-40
          images every 15 min
Date: 2011-05-14/15

  UT   forms  bright   height   azimuth   comments
               ness   top bot  left rght  e.g. weather
-----  -----  ------  --- ---  ---- ----  --------------------------------
21:00  0
21:15  0                                  contrail (fake NLC)
21:30  0
21:45  0                                  fake NLC on left
22:00  0                                  likely fake NLC below centre
22:15  X                                  widespread thin cirrus
22:30  X                                  widespread thin cirrus
22:45  0                                  some cirrus
23:00  0                                  some cirrus
23:15  0                                  some cirrus
23:30  0                                  some cirrus
23:45  0                                  some cirrus
00:00  0                                  thin cirrus
00:15  X                                  widespread cirrus
00:30  X                                  widespread cirrus
00:45  X                                  widespread cirrus
01:00  X                                  widespread cirrus
01:15  X                                  widespread cirrus
01:30  X                                  widespread cirrus
01:45  X                                  widespread cirrus
02:00  X
02:15  X
02:30  X
02:45  X
03:00  X
03:15  X
03:30  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 main periods of absence of NLC are reported to the NLC Observers' Home Page:

Name: Horst Meyerdierks
Country: Scotland
Location: Edinburgh
Date: 2011/05/14-15
Start: 21:00
End: 00:00
Comments: some cirrus

Images

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