----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Tue Aug 11 16:39:49 GMT 2026 Year:26 Doy:223 Observer: mcotter Weather COMMENT BY mcotter: Tue Aug 11 16:43:48 GMT 2026 MLSO Current Weather Timestamp (UTC): 2026-08-11 16:35:00 Temperature : 43.45 deg F Dew Point : -2.42 deg F Pressure : 680.24 mbar Wind Speed : 8.95 mph Wind Direction : 146.3 deg Skies: Cirrus clouds are completely covering the sky from horizon to horizon. The inversion layer is a dark blue gray and is visible on the horizon just above Hualalai. Moderate wind blowing from the southeast. The air appears hazy at all elevations. ___end___ GENERAL COMMENT BY mcotter: Tue Aug 11 16:46:41 GMT 2026 Due to poor sky conditions the instrument and computer will remain off and the dome will remain closed. The ILX will remain on for now in the remote chance that sky conditions improve later in the day, but at this point it seems unlikely. ___end___ GENERAL COMMENT BY mcotter: Tue Aug 11 19:20:25 GMT 2026 entry was edited Dome open ___end___ Weather COMMENT BY mcotter: Tue Aug 11 20:13:44 GMT 2026 MLSO Current Weather Timestamp (UTC): 2026-08-11 20:08:00 Temperature : 57.02 deg F Dew Point : 12.31 deg F Pressure : 681.26 mbar Wind Speed : 16.78 mph Wind Direction : 17.6 deg Skies: There are still some Cirrus clouds present in the sky but the viewing area appear fairly clear. ___end___ Tue Aug 11 20:14:22 GMT 2026 Kcor Focus/alignment program exited. The focus was manually set to 134.5 from 133.2. KCOR COMMENT BY mcotter: Tue Aug 11 20:23:02 GMT 2026 Kcor: Sky conditions have improved greatly since the start of day. Some Cirrus clouds are still present, but the viewing area of the sky appears fairly clear. The synoptic images are a bit bright but overall fairly acceptable. Aerosols are very heavy and quite noticeable in the Level 0 and NRGF images. ___end___ KCOR COMMENT BY mcotter: Tue Aug 11 20:39:11 GMT 2026 Kcor: The NRGF images at 20:22:11 UT and at 20:30:02 UT show a brief jump near the north-northwest area of the occulter. I looked at the Level 0 images and could also see an oscillation of the occulter at the same time stamps. The aerosols are very high and the general sky conditions are very bright so this may account for this anomaly. ___end___ Weather BY mcotter: Tue Aug 11 20:41:25 GMT 2026 MLSO Current Weather Timestamp (UTC): 2026-08-11 20:35:00 Temperature : 54.91 deg F Dew Point : 28.46 deg F Pressure : 681.26 mbar Wind Speed : 11.63 mph Wind Direction : 299.1 deg Skies: Most of the Cirrus clouds from earlier this morning has burned off, but there now appears to be a thin translucent covering of Cirrostratus clouds covering patches of the sky. ___end___ KCOR COMMENT BY mcotter: Tue Aug 11 20:48:27 GMT 2026 Kcor: The instrument has been paused due to bright sky conditions in the viewing area. There appears to be a thin, translucent layer of Cirrostratus clouds in different areas of the sky. I will continue to make observations as much as sky conditions allow. ___end___ Weather COMMENT BY mcotter: Tue Aug 11 22:58:16 GMT 2026 MLSO Current Weather Timestamp (UTC): 2026-08-11 22:50:00 Temperature : 58.78 deg F Dew Point : 25.79 deg F Pressure : 681.01 mbar Wind Speed : 15.66 mph Wind Direction : 51.1 deg Skies: The sky continues to have a thin layer of Cirrostratus covering it at this time. The wind has increased and is blowing gustily from the northeast. ___end___ GENERAL COMMENT BY mcotter: Tue Aug 11 23:01:48 GMT 2026 Due to poor sky conditions no observing is being done at this time, but the dome remains open in the event the sky clears enough for observations. Due to the gusty wind conditions the dome has been rotated 180 degrees to inhibit wind shake and help prevent dust from getting into the instruments. ___end___ KCOR COMMENT BY KCOR: Wed Aug 12 00:53:43 GMT 2026 KCOR file transfer report KCor created 354 .bin files 349 .fts files NOTICE ? 5 .bin file(s) with no matching .fts: 20260811_203621_kcor.bin 20260811_204615_kcor.bin 20260811_205038_kcor.bin 20260811_210753_kcor.bin 20260812_005240_kcor.bin Remote site is complete ? no rsync required. ___end___ GENERAL COMMENT BY mcotter: Wed Aug 12 01:09:26 GMT 2026 Comment: The sky remains overcast and it does not appear to be clearing. The dome has been closed. The Kcor and SGS instruments and computers and the ILX have been powered down in order to reserve power in the batteries. ___end___ BY mcotter: Wed Aug 12 01:52:21 GMT 2026 End Of Day: Poor sky conditions for most of the day with a brief period of observations in the morning. ___end___ Logger COMMENT BY mcotter: Wed Aug 12 01:52:33 GMT 2026 Log closed ONSITE STAFF: berkey, mcotter ___end___