STH Recent Preflight: 61273
Executing preflight for 61273 at Thu Aug 20 17:15:00 SAST 2026.
Log can be found in /atlas/obs/03/61273/preflight.dat.
Setting donefile '/atlas/obs/03/61273/preflight_complete.20260820151500.1405' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260820151500.1405.
Thu Aug 20 17:15:00 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Thu Aug 20 17:15:00 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [9bdeb784-6150-47a2-876f-4c456f46d324;1800]
Thu Aug 20 17:15:00 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1787238892
OK
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Thu Aug 20 17:15:01 SAST 2026 [elapsed=1 sec] CLUSTER NFS MOUNTS
admin proc1:/export/atlas-cal...OK
admin proc1:/export/atlas-red...OK
proc1 admin:/export/atlas-obs...OK
proc2 admin:/export/atlas-obs...OK
proc2 proc1:/export/atlas-cal...OK
proc2 proc1:/export/atlas-red...OK
proc3 admin:/export/atlas-obs...OK
proc3 proc1:/export/atlas-cal...OK
proc3 proc1:/export/atlas-red...OK
proc4 admin:/export/atlas-obs...OK
proc4 proc1:/export/atlas-cal...OK
proc4 proc1:/export/atlas-red...OK
Thu Aug 20 17:15:03 SAST 2026 [elapsed=3 sec] SCREENS
admin dash-tcsdata...OK
admin dash-recent...OK
admin dash-skycoverage...OK
admin dash-logstamp...OK
proc1 redq...OK
proc1 prochain-redpost-03a...OK
proc1 prochain-redpost-03x...OK
Thu Aug 20 17:15:03 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Thu Aug 20 17:15:03 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Thu Aug 20 15:15:03 UTC 2026
met: OK
proc1: OK
proc2: OK
proc3: OK
proc4: OK
archon: OK
NTP:
remote refid st t when poll reach delay offset jitter
==============================================================================
+192.168.4.5 .GPS. 1 u 1892 1024 126 0.983 -0.015 0.050
*metbox2.sth.atl .PPS. 1 u 136 1024 377 0.316 -0.035 0.016
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 196.21.187.2 2 u 217 1024 377 24.028 -0.235 0.483
-ntp.as3741.net 146.64.58.41 2 u 758 1024 377 22.880 -0.139 0.468
-ntp2.as3741.net 129.134.28.123 2 u 813 1024 377 7.245 -0.434 0.288
-ntp2.inx.net.za 183.3.52.101 2 u 632 1024 377 7.270 -0.007 0.022
-ntp5.inx.net.za 102.176.229.251 2 u 644 1024 377 7.872 -0.003 0.107
#102.222.156.151 196.21.187.2 2 u 84 1024 377 24.584 0.105 0.207
-ntp2.nog.net.za 80.72.67.48 3 u 752 1024 377 7.539 0.040 0.050
+139.84.231.68 ( 196.21.187.2 2 u 392 1024 377 22.767 0.003 0.684
-ntp8.inx.net.za 210.182.58.253 2 u 349 1024 377 16.919 -0.185 0.261
Thu Aug 20 17:15:07 SAST 2026 [elapsed=7 sec] DISKS
200GB available in /atlas/obs...OK (5240GB)
200GB available in /atlas/red...OK (7646GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 5.3T 5.0T 52% /
admin:/dev/loop0 106M 106M 0 100% /snap/core/17284
admin:/dev/loop1 106M 106M 0 100% /snap/core/17292
archon:/dev/sda2 117G 22G 89G 20% /
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
archon:/dev/loop0 106M 106M 0 100% /snap/core/17292
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
tcs:/dev/mapper/ubuntu--vg-ubuntu--lv 98G 38G 56G 41% /
tcs:/dev/nvme0n1p2 2.0G 131M 1.7G 8% /boot
tcs:/dev/nvme0n1p1 1.1G 6.1M 1.1G 1% /boot/efi
proc1:/dev/md0p1 15T 6.1T 7.3T 46% /
proc1:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc1:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc2:/dev/md0p1 15T 1.9T 12T 14% /
proc2:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 737G 13T 6% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17292
Thu Aug 20 17:15:08 SAST 2026 [elapsed=8 sec] SERVICES1
qcam
chiller...OK
dome...OK
mount...OK
modo...OK
cam...OK
acam...OK
weather...OK
met...OK
sentry...OK
dfm...OK
duplicates...OK
Thu Aug 20 17:15:08 SAST 2026 [elapsed=8 sec] Disabling mount tracking.
Thu Aug 20 17:15:08 SAST 2026 [elapsed=8 sec] SERVICES2
Thu Aug 20 17:15:08 SAST 2026 [elapsed=8 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Thu Aug 20 17:15:12 SAST 2026 [elapsed=12 sec] DOME
status...OK
audio setup: using amcam-mezz-s to record
Pointing webcam to azcheck position ... done
Homing the dome ... waiting ... done
Attempting audio conversion ... size= 910kB time=00:00:29.12 bitrate= 256.0kbits/s speed=1.43e+03x
audio converted to domehome.wav.
Copy dome audio to dashboards ... done
slewing to azimuth 0 (N)...OK
Copy azcheck JPEG to dashboards ... done
parking...OK
dome: AZ=90.00 CLOSED/CLOSED (0%) IDLE
Thu Aug 20 17:17:46 SAST 2026 [elapsed=166 sec] MOUNT
blinky status...OK
motor logs...OK
slewing to az=70,alt=70...OK
slewing to az=290,alt=70...OK
parking...OK
mount: 217.12 -29.49, az/alt=324.76 +86.49 idle(e) IDLE
Thu Aug 20 17:18:37 SAST 2026 [elapsed=217 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Thu Aug 20 17:19:02 SAST 2026 [elapsed=242 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Thu Aug 20 17:19:02 SAST 2026 [elapsed=242 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (7 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.4C)
Checking CCD plane: Z0=+1732.00 DZDX=-892.00 DZDY=+2882.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Thu Aug 20 17:19:02 SAST 2026 [elapsed=242 sec] WEATHER
status weather: clear 16.1C 35% 15/21kph@299 DP12.3C/-189C/d IDLE
...OK
Thu Aug 20 17:19:03 SAST 2026 [elapsed=243 sec] MET
status...OK
met: c=N o=Y Ro8d Co5d Wo9d Ho7d To63d Do28d IDLE
Thu Aug 20 17:19:03 SAST 2026 [elapsed=243 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Thu Aug 20 17:19:05 SAST 2026 [elapsed=245 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 246.03 -14.64, az/alt=59.90 +60.06 tracking(w) IDLE 0s
A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R
initialized motor A constants
initialized motor B constants
A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R
A 0.020s 3 0.0%
B 0.020s -2 0.0%
A 2 0.1mm 15 N F R | B -2 -0.1mm 15 N F R
finding forward (close) limit for shutter A
....done
backing off limit
..........................backing off 4 sec...
at limit
done
finding forward (close) limit for shutter B
...done
backing off limit
..............backing off 4 sec...
at limit
done
A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R
exercising shutters...Using amcam-mezz-s to record
A 0.020s 8 0.1%
A 0.051s 107 1.2%
A 0.081s 392 4.3%
A 0.111s 734 8.0%
A 0.141s 1190 13.0%
A 0.172s 1783 19.5%
A 0.202s 2465 26.9%
A 0.232s 3261 35.6%
A 0.262s 4165 45.5%
A 0.293s 5113 55.9%
A 0.323s 5991 65.4%
A 0.353s 6782 74.1%
A 0.384s 7438 81.3%
A 0.414s 7998 87.4%
A 0.444s 8467 92.5%
A 0.474s 8791 96.0%
A 0.505s 9020 98.5%
A 0.535s 9153 100.0%
B 0.020s 0 0.0%
B 0.050s 92 1.0%
B 0.081s 375 4.1%
B 0.111s 714 7.8%
B 0.141s 1181 12.9%
B 0.171s 1758 19.2%
B 0.202s 2443 26.7%
B 0.232s 3232 35.3%
B 0.262s 4136 45.2%
B 0.292s 5075 55.4%
B 0.323s 5964 65.2%
B 0.353s 6753 73.8%
B 0.383s 7415 81.0%
B 0.414s 7994 87.3%
B 0.444s 8442 92.2%
B 0.474s 8790 96.0%
B 0.504s 9023 98.6%
B 0.535s 9143 99.9%
B 0.565s 9160 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9070 99.1%
A 0.081s 8783 95.9%
A 0.111s 8426 92.0%
A 0.141s 7986 87.2%
A 0.172s 7393 80.8%
A 0.202s 6715 73.4%
A 0.232s 5925 64.7%
A 0.262s 5013 54.8%
A 0.293s 4073 44.5%
A 0.323s 3192 34.9%
A 0.353s 2400 26.2%
A 0.384s 1730 18.9%
A 0.414s 1163 12.7%
A 0.444s 710 7.8%
A 0.474s 365 4.0%
A 0.505s 135 1.5%
A 0.535s 15 0.2%
A 0.565s -6 0.0%
B 0.020s 9145 99.9%
B 0.050s 9032 98.7%
B 0.081s 8773 95.8%
B 0.111s 8424 92.0%
B 0.141s 7958 86.9%
B 0.172s 7380 80.6%
B 0.202s 6693 73.1%
B 0.232s 5897 64.4%
B 0.262s 4984 54.4%
B 0.293s 4051 44.3%
B 0.323s 3164 34.6%
B 0.353s 2384 26.0%
B 0.384s 1713 18.7%
B 0.414s 1140 12.5%
B 0.444s 697 7.6%
B 0.474s 356 3.9%
B 0.505s 127 1.4%
B 0.535s 13 0.1%
B 0.565s -5 0.0%
A 0 0.0mm 15 N F R | B -5 -0.2mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.535 seconds.
Shutter B opened to 100.0 percent in 0.565 seconds.
Shutter A closed to 0.0 percent in 0.565 seconds.
Shutter B closed to 0.0 percent in 0.565 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.09e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9294 IDLE
Thu Aug 20 17:19:42 SAST 2026 [elapsed=282 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
taking preflight exposures:
acam...OK
acam image:
123M Aug 20 17:19 /atlas/obs/03a/61273/03a61273e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Thu Aug 20 17:20:05 SAST 2026 [elapsed=305 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (15 seconds old)
OTA humidity level...OK (15%)
Dome humidity exists...OK
Dome humidity is current... OK
Thu Aug 20 17:20:05 SAST 2026 [elapsed=305 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61272.63895401|info|galildriver|using focus model: foc=9187+(4.30)*17.4+(-0.40)*60.2=9237.7
61272.63895937|info|galildriver|o 2 IN | cass: 3040322 15.20 mm b=23 move=NO | arm: 409724 476.99 mm b=03 move=OK | foc: 54017177 9289 um b=8f M [focus]
61272.63896845|info|galildriver|o 2 IN | cass: 3040318 15.20 mm b=23 move=NO | arm: 409724 476.99 mm b=03 move=OK | foc: 54011897 9263 um b=8f M [focus]
61272.63898184|info|galildriver|o 2 IN | cass: 3040322 15.20 mm b=23 move=NO | arm: 409724 476.99 mm b=03 move=OK | foc: 54006291 9235 um b=8f M [focus]
61272.63899199|info|galildriver|o 2 IN | cass: 3040318 15.20 mm b=23 move=NO | arm: 409724 476.99 mm b=03 move=OK | foc: 54006307 9235 um b=0f [cmd]
bestfocus for o...OK
Thu Aug 20 17:20:09 SAST 2026 [elapsed=309 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Thu Aug 20 17:20:35 SAST 2026 [elapsed=335 sec] Disabling mount tracking.
Waiting on the mount ... done.
Turning tracking off ... done.
Waiting on the mount ... done.
Recheck mount status ... done.
doorpsw 3 OFF redLED
doorpsw 2 OFF whiteLED
Thu Aug 20 17:20:36 SAST 2026 [elapsed=336 sec] NOTICES: det_dzdx=-892 is outside range +-250 from -558; det_dzdy=2882 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Thu Aug 20 17:20:36 SAST 2026 [elapsed=336 sec] Happy observing!
Thu Aug 20 17:20:36 SAST 2026 [elapsed=336 sec] Preflight took 336 seconds to complete.
Thu Aug 20 17:20:36 SAST 2026 [elapsed=336 sec] STARTING CLEANUP
Turning off LEDs
doorpsw 3 OFF redLED
doorpsw 2 OFF whiteLED
Releasing TCS lock [preflight]
OK TCS lock released by preflight-STH
Preflight image
Shutter acutation data:
A 0.020s 5 0.1% A 0.051s 125 1.4% A 0.081s 396 4.3% A 0.112s 761 8.3% A 0.142s 1231 13.4% A 0.172s 1803 19.7% A 0.203s 2512 27.4% A 0.233s 3322 36.3% A 0.263s 4233 46.2% A 0.294s 5162 56.4% A 0.324s 6054 66.1% A 0.355s 6820 74.5% A 0.385s 7474 81.6% A 0.415s 8041 87.8% A 0.446s 8480 92.6% A 0.476s 8811 96.3% A 0.507s 9044 98.8% A 0.537s 9142 99.9% A 0.568s 9154 100.0% B 0.020s 1 0.0% B 0.050s 114 1.2% B 0.081s 381 4.2% B 0.111s 727 7.9% B 0.142s 1204 13.2% B 0.172s 1774 19.4% B 0.202s 2465 26.9% B 0.233s 3269 35.7% B 0.263s 4197 45.8% B 0.294s 5132 56.1% B 0.324s 6015 65.7% B 0.355s 6795 74.2% B 0.385s 7461 81.5% B 0.416s 8033 87.8% B 0.446s 8481 92.6% B 0.477s 8813 96.3% B 0.507s 9033 98.7% B 0.538s 9143 99.9% B 0.568s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.051s 9049 98.9% A 0.081s 8778 95.9% A 0.112s 8421 92.0% A 0.142s 7958 86.9% A 0.172s 7379 80.6% A 0.202s 6692 73.1% A 0.233s 5895 64.4% A 0.263s 4982 54.4% A 0.294s 4039 44.1% A 0.324s 3166 34.6% A 0.355s 2362 25.8% A 0.385s 1691 18.5% A 0.415s 1131 12.4% A 0.446s 680 7.4% A 0.476s 349 3.8% A 0.507s 120 1.3% A 0.537s 12 0.1% A 0.567s 1 0.0% B 0.020s 9143 99.9% B 0.051s 9011 98.4% B 0.081s 8761 95.7% B 0.112s 8407 91.8% B 0.142s 7934 86.7% B 0.173s 7356 80.4% B 0.203s 6640 72.5% B 0.234s 5835 63.7% B 0.264s 4919 53.7% B 0.295s 3993 43.6% B 0.325s 3110 34.0% B 0.356s 2320 25.3% B 0.386s 1642 17.9% B 0.416s 1101 12.0% B 0.447s 660 7.2% B 0.477s 329 3.6% B 0.508s 115 1.3% B 0.538s 9 0.1% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R