STH Recent Preflight: 61181
Executing preflight for 61181 at Wed May 20 16:46:40 SAST 2026.
Log can be found in /atlas/obs/03/61181/preflight.dat.
Setting donefile '/atlas/obs/03/61181/preflight_complete.20260520144640.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260520144640.11042.
Wed May 20 16:46:40 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Wed May 20 16:46:40 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [05ec9cd8-f00d-4fd1-bb87-963f8946cd56;1800]
Wed May 20 16:46:40 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Wed May 20 16:46:41 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Wed May 20 16:46:41 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Wed May 20 16:46:41 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Wed May 20 16:46:41 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1779288396
OK
Wed May 20 16:46:41 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Wed May 20 16:46:41 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
Wed May 20 16:46:43 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
Wed May 20 16:46:43 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Wed May 20 16:46:43 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Wed May 20 14:46:43 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 1133 1024 376 1.057 -0.093 0.178
*metbox2.sth.atl .PPS. 1 u 797 1024 377 0.289 -0.141 1.991
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 347 1024 377 24.297 -0.036 0.192
-ntp.as3741.net 210.182.58.253 2 u 883 1024 377 22.903 -0.096 0.638
-ntp2.as3741.net 129.134.26.123 2 u 921 1024 377 7.225 -0.256 0.050
-ntp2.inx.net.za 196.21.187.2 2 u 393 1024 377 7.268 -0.092 0.149
102.222.100.153 196.21.187.2 2 u 21d 1024 0 7.937 0.836 0.000
-ntp5.inx.net.za 196.21.187.2 2 u 926 1024 377 7.542 -0.137 0.103
+flipping.cloudh 80.72.67.48 3 u 933 1024 377 7.811 -0.249 0.155
102.216.37.99 ( 210.182.58.253 2 u 107d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 731 1024 377 22.737 1.130 1.200
Wed May 20 16:46:46 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (6319GB)
200GB available in /atlas/red...OK (9477GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 4.2T 6.1T 41% /
admin:/dev/loop2 106M 106M 0 100% /snap/core/17284
admin:/dev/loop0 106M 106M 0 100% /snap/core/17292
archon:/dev/sda2 117G 21G 91G 19% /
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
archon:/dev/loop0 106M 106M 0 100% /snap/core/17292
tcs:/dev/mapper/ubuntu--vg-ubuntu--lv 98G 35G 59G 37% /
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 4.4T 9.1T 33% /
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/loop1 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 737G 13T 6% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17292
Wed May 20 16:46:46 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
Wed May 20 16:46:46 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Wed May 20 16:46:47 SAST 2026 [elapsed=7 sec] SERVICES2
Wed May 20 16:46:47 SAST 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Wed May 20 16:46:51 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= 920kB time=00:00:29.44 bitrate= 256.0kbits/s speed=1.51e+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
Wed May 20 16:50:05 SAST 2026 [elapsed=205 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: 119.52 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Wed May 20 16:51:04 SAST 2026 [elapsed=264 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Wed May 20 16:51:25 SAST 2026 [elapsed=285 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.7 IDLE
Wed May 20 16:51:25 SAST 2026 [elapsed=285 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (10 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-55.1C)
Checking CCD plane: Z0=+1696.00 DZDX=-882.00 DZDY=+2082.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Wed May 20 16:51:25 SAST 2026 [elapsed=285 sec] WEATHER
status weather: C H+ 11.8C 88% 21/23kph@72 DP1.7C/-5C/d IDLE
...OK
Wed May 20 16:51:26 SAST 2026 [elapsed=286 sec] MET
status...OK
met: c=Y o=N Ro1h Cx0 Wo1d Hx37 To1d Do1d wait CH IDLE
Wed May 20 16:51:26 SAST 2026 [elapsed=286 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Wed May 20 16:51:28 SAST 2026 [elapsed=288 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 148.45 -14.63, 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 -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 108 1.2%
A 0.081s 392 4.3%
A 0.112s 733 8.0%
A 0.142s 1190 13.0%
A 0.172s 1782 19.5%
A 0.203s 2465 26.9%
A 0.233s 3259 35.6%
A 0.263s 4163 45.5%
A 0.293s 5115 55.9%
A 0.324s 5990 65.4%
A 0.354s 6779 74.1%
A 0.384s 7439 81.3%
A 0.415s 8000 87.4%
A 0.445s 8478 92.6%
A 0.476s 8802 96.2%
A 0.506s 9028 98.6%
A 0.536s 9154 100.0%
B 0.020s 1 0.0%
B 0.051s 105 1.1%
B 0.081s 384 4.2%
B 0.111s 740 8.1%
B 0.142s 1215 13.3%
B 0.172s 1796 19.6%
B 0.202s 2489 27.2%
B 0.233s 3284 35.9%
B 0.263s 4197 45.8%
B 0.293s 5131 56.1%
B 0.324s 6020 65.8%
B 0.354s 6796 74.2%
B 0.384s 7455 81.4%
B 0.415s 8028 87.7%
B 0.445s 8479 92.6%
B 0.475s 8818 96.3%
B 0.506s 9039 98.7%
B 0.536s 9148 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9151 100.0%
A 0.051s 9070 99.1%
A 0.081s 8784 96.0%
A 0.111s 8415 91.9%
A 0.142s 7968 87.0%
A 0.172s 7374 80.6%
A 0.203s 6692 73.1%
A 0.233s 5868 64.1%
A 0.264s 4955 54.1%
A 0.294s 4016 43.9%
A 0.325s 3137 34.3%
A 0.355s 2354 25.7%
A 0.385s 1689 18.5%
A 0.416s 1130 12.3%
A 0.446s 687 7.5%
A 0.476s 344 3.8%
A 0.507s 117 1.3%
A 0.537s 8 0.1%
B 0.020s 9146 99.9%
B 0.051s 9041 98.8%
B 0.081s 8782 95.9%
B 0.111s 8437 92.2%
B 0.142s 7975 87.1%
B 0.172s 7379 80.6%
B 0.203s 6696 73.1%
B 0.233s 5895 64.4%
B 0.264s 4984 54.4%
B 0.294s 4022 43.9%
B 0.325s 3135 34.2%
B 0.355s 2360 25.8%
B 0.385s 1694 18.5%
B 0.416s 1124 12.3%
B 0.446s 683 7.5%
B 0.476s 346 3.8%
B 0.507s 122 1.3%
B 0.537s 10 0.1%
B 0.567s -5 0.0%
A 1 0.0mm 15 N F R | B -4 -0.1mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.536 seconds.
Shutter B opened to 99.9 percent in 0.536 seconds.
Shutter A closed to 0.1 percent in 0.537 seconds.
Shutter B closed to 0.0 percent in 0.567 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed= 942x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9219 IDLE
Wed May 20 16:52:16 SAST 2026 [elapsed=336 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.7 IDLE
taking preflight exposures:
acam...OK
acam image:
122M May 20 16:52 /atlas/obs/03a/61181/03a61181e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Wed May 20 16:52:38 SAST 2026 [elapsed=358 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (51 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Wed May 20 16:52:38 SAST 2026 [elapsed=358 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61180.61989896|info|galildriver|using focus model: foc=9187+(4.30)*14.2+(-0.40)*60.2=9224.0
61180.61990420|info|galildriver|o 2 IN | cass: 3047783 15.24 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54003339 9220 um b=8f M [focus]
61180.61991480|info|galildriver|o 2 IN | cass: 3047782 15.24 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54003410 9220 um b=2f [cmd]
bestfocus for o...OK
Wed May 20 16:52:41 SAST 2026 [elapsed=361 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Wed May 20 16:53:10 SAST 2026 [elapsed=390 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
Wed May 20 16:53:11 SAST 2026 [elapsed=391 sec] NOTICES: det_dzdx=-882 is outside range +-250 from -558; det_dzdy=2082 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Wed May 20 16:53:11 SAST 2026 [elapsed=391 sec] Happy observing!
Wed May 20 16:53:11 SAST 2026 [elapsed=391 sec] Preflight took 391 seconds to complete.
Wed May 20 16:53:11 SAST 2026 [elapsed=391 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 3 0.0% A 0.051s 114 1.2% A 0.081s 386 4.2% A 0.111s 736 8.0% A 0.142s 1196 13.1% A 0.172s 1783 19.5% A 0.202s 2467 26.9% A 0.232s 3266 35.7% A 0.262s 4173 45.6% A 0.293s 5104 55.8% A 0.323s 5996 65.5% A 0.353s 6776 74.0% A 0.383s 7433 81.2% A 0.414s 8004 87.4% A 0.444s 8458 92.4% A 0.474s 8792 96.0% A 0.504s 9028 98.6% A 0.534s 9138 99.8% A 0.565s 9153 100.0% B 0.020s 2 0.0% B 0.050s 114 1.2% B 0.081s 379 4.1% B 0.111s 728 8.0% B 0.141s 1203 13.1% B 0.171s 1773 19.4% B 0.201s 2467 26.9% B 0.232s 3272 35.7% B 0.262s 4138 45.2% B 0.292s 5075 55.4% B 0.322s 5962 65.1% B 0.353s 6749 73.7% B 0.383s 7420 81.1% B 0.413s 7986 87.2% B 0.443s 8443 92.2% B 0.474s 8786 96.0% B 0.504s 9018 98.5% B 0.534s 9136 99.8% B 0.564s 9155 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9057 98.9% A 0.081s 8787 96.0% A 0.111s 8433 92.1% A 0.141s 7975 87.1% A 0.171s 7400 80.8% A 0.201s 6716 73.4% A 0.232s 5921 64.7% A 0.262s 5012 54.8% A 0.292s 4069 44.5% A 0.322s 3193 34.9% A 0.353s 2410 26.3% A 0.383s 1730 18.9% A 0.413s 1165 12.7% A 0.443s 718 7.8% A 0.473s 377 4.1% A 0.504s 137 1.5% A 0.534s 17 0.2% A 0.564s 1 0.0% B 0.020s 9144 99.9% B 0.050s 9012 98.4% B 0.080s 8773 95.8% B 0.111s 8422 92.0% B 0.141s 7952 86.9% B 0.171s 7380 80.6% B 0.202s 6691 73.1% B 0.232s 5892 64.4% B 0.262s 4981 54.4% B 0.292s 4055 44.3% B 0.323s 3165 34.6% B 0.353s 2391 26.1% B 0.383s 1701 18.6% B 0.413s 1149 12.6% B 0.443s 698 7.6% B 0.474s 357 3.9% B 0.504s 132 1.4% B 0.534s 14 0.2% B 0.564s 1 0.0% A 1 0.0mm 15 N F R | B 1 0.0mm 15 N F R