----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Tue Apr 28 16:43:32 GMT 2026 Year:26 Doy:118 Observer: mcotter Weather COMMENT BY mcotter: Tue Apr 28 16:43:40 GMT 2026 MLO Current Weather Timestamp (UTC): 2026-04-28 16:35:00 Temperature : 38.16 deg F Dew Point : -5.1 deg F Pressure : 677.88 mbar Wind Speed : 10.51 mph Wind Direction : 226.2 deg Skies: Heavily overcast skies in all direction below 10,000' elevation. Thin inversion layer visible on the horizon above Haleakala: cannot see Maui. There does not appear to be much wind so I suspect that the wind speed anemometer is not functioning properly. ___end___ KCOR COMMENT BY mcotter: Tue Apr 28 16:45:57 GMT 2026 Kcor: The Kcor ILX was reading 28.3 deg C when I arrived this morning at approximately 0630 HST. ___end___ GENERAL COMMENT BY mcotter: Tue Apr 28 16:47:58 GMT 2026 Power Supply Levels. The power levels upon arrival were as follows: ECO FLO Power Unit: 69% YETI Power Unit: 66%. ___end___ KCOR COMMENT BY mcotter: Tue Apr 28 16:49:54 GMT 2026 Kcor Started: Using the new method of operation that Ben had developed, I successfully started the Kcor power strip via the icon located on the Wahoo 2 computer desktop. ___end___ GENERAL COMMENT BY mcotter: Tue Apr 28 16:51:16 GMT 2026 Global Protect connected on both computers. ___end___ Tue Apr 28 17:32:05 GMT 2026 Kcor Focus/alignment program exited KCOR COMMENT BY mcotter: Tue Apr 28 17:43:32 GMT 2026 Kcor heater modulator is still at 29.8, updating the crontab to be 1 hour earlier. ___end___ ** GENERAL PROBLEM REPORTED BY mcotter ** : Tue Apr 28 17:51:50 GMT 2026 Internet down Network drop out power cycled the fiber media converter and it came back up. ___end___ ** GENERAL PROBLEM REPORTED BY mcotter ** : Tue Apr 28 18:11:27 GMT 2026 Internet down Network drop out power cycled the fiber media converter and it came back up. ___end___ ** KCOR PM mcotter ** : Tue Apr 28 18:20:54 GMT 2026 KCor Occulter WAS NOT SWAPPED OUT THIS MORNING. Due to maintenance being performed, establishing procedural updates and changing startup sequences it was decided that the Kcor Instrument would not have the occulter changed out today, but will have it changed out tomorrow, Wednesday April 29, 2026. ___end___ Weather COMMENT BY mcotter: Tue Apr 28 18:25:34 GMT 2026 Weather: Clouds have quickly pushed their way up from the Saddle Valley and are now encroaching over the science and observing area. ___end___ KCOR COMMENT BY mcotter: Tue Apr 28 18:27:46 GMT 2026 Kcor Stopped: The Kcor Instrument has been stopped due to clouds over the observing area. ___end___ GENERAL COMMENT BY mcotter: Tue Apr 28 18:29:15 GMT 2026 Dome closed: The dome has been closed due to clouds coming up the the Saddle Valley and encroaching over the observatory. ___end___ ** GENERAL PROBLEM REPORTED BY mcotter ** : Tue Apr 28 18:39:47 GMT 2026 Internet down Tested a second media converter but if failed to even connect. Reverted the the existing media converter and cleaned optical connections. It is running now. ___end___ Tue Apr 28 18:44:56 GMT 2026 Kcor Focus/alignment program exited Weather COMMENT BY mcotter: Tue Apr 28 19:33:15 GMT 2026 MLO Current Weather Timestamp (UTC): 2026-04-28 19:26:00 Temperature : 44.54 deg F Dew Point : 36.16 deg F Pressure : 679.35 mbar Wind Speed : 5.82 mph Wind Direction : 31.5 deg Skies: The clouds that had encroached over the observatory have now retreated back down into the Saddle Valley, but they are still of concern and we will need to continue to closely monitor them. The sky conditions over the observatory and in the viewing area is now clear. ___end___ GENERAL COMMENT BY mcotter: Tue Apr 28 19:36:48 GMT 2026 Dome open: The dome shutters have been re-opened, but we have left the lower shutter door approximately half open and the upper shutter door is approximately half open. If the clouds continue to stay away from the viewing area we will open the upper shutter door fully open for continuing observations. ___end___ KCOR COMMENT BY mcotter: Tue Apr 28 19:37:34 GMT 2026 Kcor Started: The Kcor Instrument is again on sky and observing. ___end___ ** KCOR PM mcotter ** : Tue Apr 28 19:48:52 GMT 2026 Blew off Kcor O1: This morning before observing the Kcor O1 was blown off. ___end___ ** GENERAL PROBLEM REPORTED BY mcotter ** : Tue Apr 28 19:53:14 GMT 2026 Internet down: We have encountered issues with the internet going down several times. We have been able to successfully reconnect just by reconnecting Global Protect. ___end___ Weather COMMENT BY mcotter: Tue Apr 28 20:06:32 GMT 2026 MLO Current Weather Timestamp (UTC): 2026-04-28 19:59:00 Temperature : 49.89 deg F Dew Point : 37.33 deg F Pressure : 679.53 mbar Wind Speed : 10.07 mph Wind Direction : 337.6 deg Skies: Orographic clouds have swiftly blown up the Maunaloa slopes into the science area and over the observatory. The sky is quickly becoming mostly overcast. ___end___ KCOR COMMENT BY mcotter: Tue Apr 28 20:07:36 GMT 2026 Kcor: The Kcor Instrument has been stopped due to cloud coverage in the viewing area. ___end___ GENERAL COMMENT BY mcotter: Tue Apr 28 20:08:59 GMT 2026 Dome closed: The dome and windows have been closed at this time due to cloud coverage over the observatory. ___end___ KCOR COMMENT BY KCOR: Tue Apr 28 20:14:58 GMT 2026 KCOR file transfer report KCor created 429 .bin files 425 .fts files NOTICE ? 4 .bin file(s) with no matching .fts: 20260428_181710_kcor.bin 20260428_193022_kcor.bin 20260428_193037_kcor.bin 20260428_195607_kcor.bin WARNING 32 fts file(s) found locally that was not transfered dawn ACTION must be taken to copy: 20260428_174851_kcor.fts 20260428_174906_kcor.fts 20260428_174921_kcor.fts 20260428_180617_kcor.fts 20260428_180633_kcor.fts 20260428_180648_kcor.fts 20260428_180703_kcor.fts 20260428_180718_kcor.fts 20260428_180733_kcor.fts 20260428_180748_kcor.fts 20260428_180804_kcor.fts 20260428_180819_kcor.fts 20260428_180834_kcor.fts 20260428_181655_kcor.fts 20260428_184813_kcor.fts 20260428_184828_kcor.fts 20260428_184843_kcor.fts 20260428_184858_kcor.fts 20260428_184929_kcor.fts 20260428_184944_kcor.fts 20260428_184959_kcor.fts 20260428_185029_kcor.fts 20260428_185045_kcor.fts 20260428_185100_kcor.fts 20260428_185331_kcor.fts 20260428_185402_kcor.fts 20260428_191028_kcor.fts 20260428_191043_kcor.fts 20260428_191058_kcor.fts 20260428_191113_kcor.fts 20260428_191129_kcor.fts 20260428_191144_kcor.fts ___end___ Solar Event COMMENT BY mcotter: Tue Apr 28 20:18:13 GMT 2026 entry was edited Observed Prominence to be erupting Time: 19:18:14 PA: 255 Deg. Height: 1.11 Rs ___end___ BY mcotter: Wed Apr 29 00:05:18 GMT 2026 Updated the end of day script to check for missing files and incomplete files in raw/transfer/YYYYMMDD ___end___ KCOR COMMENT BY mcotter: Wed Apr 29 00:06:27 GMT 2026 Updated the kcor mc4u code to turn on the ilx output if needed. ___end___ Logger COMMENT BY mcotter: Wed Apr 29 00:07:12 GMT 2026 Log closed ONSITE STAFF: berkey, mcotter ___end___