STH Recent Preflight: 61281
Executing preflight for 61281 at Fri Aug 28 17:19:56 SAST 2026.
Log can be found in /atlas/obs/03/61281/preflight.dat.
Setting donefile '/atlas/obs/03/61281/preflight_complete.20260828151956.30267' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260828151956.30267.
Fri Aug 28 17:19:56 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Fri Aug 28 17:19:56 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [874e25b0-a2e6-473b-9150-b61342d1ac1c;1800]
Fri Aug 28 17:19:56 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Fri Aug 28 17:19:57 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Fri Aug 28 17:19:57 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Fri Aug 28 17:19:57 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Fri Aug 28 17:19:57 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1787930392
OK
Fri Aug 28 17:19:57 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Fri Aug 28 17:19:57 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
Fri Aug 28 17:19:59 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
Fri Aug 28 17:19:59 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Fri Aug 28 17:19:59 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Fri Aug 28 15:19:59 UTC 2026
metbox: 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 12 1024 377 1.038 0.068 0.028
+metbox2.sth.atl .PPS. 1 u 76 1024 377 0.327 0.051 0.036
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 196.21.187.2 2 u 733 1024 377 23.259 -0.370 0.461
-ntp.as3741.net 146.64.58.41 2 u 467 1024 377 22.839 0.188 0.652
-ntp2.as3741.net 146.64.58.41 2 u 175 1024 377 7.322 0.262 0.184
-ntp2.inx.net.za 183.3.52.101 2 u 736 1024 377 7.305 0.154 0.072
-ntp5.inx.net.za 102.176.229.251 2 u 1012 1024 377 7.590 0.073 0.059
#102.222.156.151 196.21.187.2 2 u 31 1024 377 24.532 0.507 0.366
+ntp2.nog.net.za 80.72.67.48 3 u 855 1024 377 7.565 0.187 0.089
-139.84.231.68 196.21.187.2 2 u 777 1024 377 24.081 -0.976 0.652
-ntp8.inx.net.za 183.3.52.101 2 u 362 1024 377 16.870 0.185 0.097
Fri Aug 28 17:20:02 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (4725GB)
200GB available in /atlas/red...OK (7599GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 5.8T 4.6T 56% /
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 6.2T 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 1.7T 12T 13% /
proc2:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 738G 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
Fri Aug 28 17:20:02 SAST 2026 [elapsed=6 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
Fri Aug 28 17:20:02 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Fri Aug 28 17:20:02 SAST 2026 [elapsed=6 sec] SERVICES2
Fri Aug 28 17:20:02 SAST 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Fri Aug 28 17:20:07 SAST 2026 [elapsed=11 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= 912kB time=00:00:29.18 bitrate= 256.0kbits/s speed=1.49e+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
Fri Aug 28 17:23:25 SAST 2026 [elapsed=209 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: 226.42 -29.49, az/alt=324.73 +86.49 idle(e) IDLE
Fri Aug 28 17:24:16 SAST 2026 [elapsed=260 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Fri Aug 28 17:24:35 SAST 2026 [elapsed=279 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.8 IDLE
Fri Aug 28 17:24:35 SAST 2026 [elapsed=279 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (5 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.1C)
Checking CCD plane: Z0=+1759.00 DZDX=-894.00 DZDY=+3521.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Fri Aug 28 17:24:35 SAST 2026 [elapsed=279 sec] WEATHER
status weather: C 21.5C 25% 20/37kph@25 DP20.8C/8C/d IDLE
...OK
Fri Aug 28 17:24:36 SAST 2026 [elapsed=280 sec] MET
status...OK
met: c=N o=Y Ro16d Co10h Wo17d Ho15d To71d Do36d IDLE
Fri Aug 28 17:24:36 SAST 2026 [elapsed=280 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Fri Aug 28 17:24:38 SAST 2026 [elapsed=282 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 255.34 -14.64, az/alt=59.90 +60.06 tracking(w) IDLE 1s
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 -1 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 7 0.1%
A 0.051s 109 1.2%
A 0.081s 392 4.3%
A 0.111s 734 8.0%
A 0.141s 1190 13.0%
A 0.172s 1785 19.5%
A 0.202s 2466 26.9%
A 0.232s 3259 35.6%
A 0.262s 4165 45.5%
A 0.293s 5115 55.9%
A 0.323s 5990 65.4%
A 0.353s 6780 74.1%
A 0.384s 7440 81.3%
A 0.414s 7982 87.2%
A 0.444s 8451 92.3%
A 0.474s 8783 95.9%
A 0.505s 9015 98.5%
A 0.535s 9148 99.9%
B 0.020s 2 0.0%
B 0.050s 105 1.1%
B 0.081s 394 4.3%
B 0.111s 740 8.1%
B 0.141s 1216 13.3%
B 0.172s 1797 19.6%
B 0.202s 2491 27.2%
B 0.232s 3286 35.9%
B 0.262s 4200 45.9%
B 0.293s 5131 56.1%
B 0.323s 6020 65.8%
B 0.353s 6798 74.3%
B 0.383s 7457 81.5%
B 0.414s 8026 87.7%
B 0.444s 8466 92.5%
B 0.474s 8805 96.2%
B 0.504s 9031 98.7%
B 0.535s 9144 99.9%
B 0.565s 9159 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.050s 9055 98.9%
A 0.081s 8760 95.7%
A 0.111s 8402 91.8%
A 0.141s 7952 86.9%
A 0.172s 7351 80.3%
A 0.202s 6669 72.9%
A 0.232s 5871 64.1%
A 0.263s 4952 54.1%
A 0.293s 4013 43.8%
A 0.323s 3137 34.3%
A 0.354s 2353 25.7%
A 0.384s 1690 18.5%
A 0.414s 1131 12.4%
A 0.444s 686 7.5%
A 0.475s 345 3.8%
A 0.505s 123 1.3%
A 0.535s 12 0.1%
A 0.566s -5 0.0%
B 0.020s 9146 99.9%
B 0.050s 9031 98.7%
B 0.081s 8770 95.8%
B 0.111s 8435 92.1%
B 0.141s 7972 87.1%
B 0.171s 7400 80.8%
B 0.201s 6716 73.4%
B 0.232s 5924 64.7%
B 0.262s 5015 54.8%
B 0.292s 4079 44.6%
B 0.322s 3192 34.9%
B 0.353s 2406 26.3%
B 0.383s 1734 18.9%
B 0.413s 1158 12.7%
B 0.443s 710 7.8%
B 0.474s 366 4.0%
B 0.504s 136 1.5%
B 0.534s 15 0.2%
B 0.564s -6 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 99.9 percent in 0.535 seconds.
Shutter B opened to 100.0 percent in 0.565 seconds.
Shutter A closed to 0.0 percent in 0.566 seconds.
Shutter B closed to 0.0 percent in 0.564 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.06e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9244 IDLE
Fri Aug 28 17:25:14 SAST 2026 [elapsed=318 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.8 IDLE
taking preflight exposures:
acam...OK
acam image:
122M Aug 28 17:25 /atlas/obs/03a/61281/03a61281e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Fri Aug 28 17:25:37 SAST 2026 [elapsed=341 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (77 seconds old)
OTA humidity level...OK (20%)
Dome humidity exists...OK
Dome humidity is current... OK
Fri Aug 28 17:25:37 SAST 2026 [elapsed=341 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61280.64279523|info|galildriver|using focus model: foc=9187+(4.30)*20.2+(-0.40)*60.2=9249.8
61280.64280025|info|galildriver|o 2 IN | cass: 3037349 15.19 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54008154 9244 um b=8f M [focus]
61280.64281042|info|galildriver|o 2 IN | cass: 3037352 15.19 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54008184 9244 um b=0f [cmd]
bestfocus for o...OK
Fri Aug 28 17:25:39 SAST 2026 [elapsed=343 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Fri Aug 28 17:26:05 SAST 2026 [elapsed=369 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
Fri Aug 28 17:26:07 SAST 2026 [elapsed=371 sec] NOTICES: det_dzdx=-894 is outside range +-250 from -558; det_dzdy=3521 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Fri Aug 28 17:26:07 SAST 2026 [elapsed=371 sec] Happy observing!
Fri Aug 28 17:26:07 SAST 2026 [elapsed=371 sec] Preflight took 371 seconds to complete.
Fri Aug 28 17:26:07 SAST 2026 [elapsed=371 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 4 0.0% A 0.051s 115 1.3% A 0.081s 384 4.2% A 0.112s 749 8.2% A 0.143s 1214 13.3% A 0.173s 1802 19.7% A 0.204s 2513 27.5% A 0.234s 3322 36.3% A 0.265s 4235 46.3% A 0.295s 5162 56.4% A 0.325s 6052 66.1% A 0.356s 6820 74.5% A 0.386s 7492 81.8% A 0.417s 8055 88.0% A 0.448s 8495 92.8% A 0.478s 8820 96.4% A 0.508s 9044 98.8% A 0.539s 9144 99.9% A 0.569s 9153 100.0% B 0.020s 1 0.0% B 0.051s 118 1.3% B 0.081s 389 4.2% B 0.111s 756 8.3% B 0.142s 1237 13.5% B 0.172s 1815 19.8% B 0.203s 2515 27.5% B 0.233s 3321 36.3% B 0.263s 4229 46.2% B 0.294s 5162 56.4% B 0.325s 6069 66.3% B 0.355s 6840 74.7% B 0.386s 7498 81.9% B 0.416s 8049 87.9% B 0.447s 8507 92.9% B 0.477s 8832 96.5% B 0.507s 9045 98.8% B 0.538s 9146 99.9% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.050s 9050 98.9% A 0.081s 8778 95.9% A 0.111s 8421 92.0% A 0.141s 7959 86.9% A 0.172s 7381 80.6% A 0.202s 6691 73.1% A 0.232s 5895 64.4% A 0.263s 4981 54.4% A 0.293s 4039 44.1% A 0.323s 3167 34.6% A 0.354s 2386 26.1% A 0.384s 1711 18.7% A 0.415s 1147 12.5% A 0.445s 681 7.4% A 0.475s 348 3.8% A 0.506s 120 1.3% A 0.536s 12 0.1% A 0.567s 1 0.0% B 0.020s 9143 99.9% B 0.051s 9018 98.5% B 0.081s 8770 95.8% B 0.112s 8421 92.0% B 0.142s 7951 86.9% B 0.173s 7356 80.4% B 0.203s 6664 72.8% B 0.233s 5865 64.1% B 0.264s 4950 54.1% B 0.294s 4022 43.9% B 0.325s 3108 34.0% B 0.355s 2347 25.6% B 0.386s 1663 18.2% B 0.416s 1115 12.2% B 0.446s 673 7.4% B 0.477s 338 3.7% B 0.507s 120 1.3% B 0.537s 11 0.1% B 0.568s 0 0.0% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R