chi and h site logo

NLC 2009-08-21/22

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 5 min
Date: 2009-08-21/22

  UT   forms  bright   height   azimuth   comments
               ness   top bot  left rght  e.g. weather
-----  -----  ------  --- ---  ---- ----  --------------------------------
20:00  X                                  cloud
20:15  X                                  cloud
20:30  X                                  cloud
20:45  X                                  cloud
21:00  X                                  cloud
21:15  X                                  cloud
21:30  X                                  cloud to h 20 with patches higher
21:45  X                                  cloud to h 10, on left to h 35
02:45  0                                  thin cloud low on horizon
03:00  0                                  thin cloud low on horizon, few patches all over field
03:15  0                                  cloud low on horizon,  few patches higher
03:30  X                                  cloud on right to h 15
03:45  X                                  patchy cloud
04:00  0                                  cloud low on horizon
04:15  0                                  cloud low on horizon
04:30  0                                  cloud low on horizon

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.)

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: 2009/08/21-22
Start: 02:45
End: 04:30
Comments: From 03:30 to 03:45 cloudy.


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