STH Recent Preflight: 61172
Executing preflight for 61172 at Mon May 11 16:52:33 SAST 2026.
Log can be found in /atlas/obs/03/61172/preflight.dat.
Setting donefile '/atlas/obs/03/61172/preflight_complete.20260511145233.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260511145233.11042.
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [d51a93aa-1817-4849-bd27-2e18ec15283d;1800]
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] auxcam is disabled.
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] Skipping auxcam.
error: unknown module: vent
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1778511149
OK
Mon May 11 16:52:33 SAST 2026 [elapsed=0 sec] OPSEC
AUTO mode: ...OK
Mon May 11 16:52:33 SAST 2026 [elapsed=0 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
Mon May 11 16:52:35 SAST 2026 [elapsed=2 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
Mon May 11 16:52:35 SAST 2026 [elapsed=2 sec] QUEUE
0 observations queued.
Mon May 11 16:52:35 SAST 2026 [elapsed=2 sec] CLOCKS
admin: Mon May 11 14:52:35 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 1018 1024 77 1.038 0.181 0.274
*metbox2.sth.atl .PPS. 1 u 898 1024 377 0.239 0.169 0.315
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 196.21.187.2 2 u 386 1024 377 24.294 -0.161 0.690
+ntp.as3741.net 146.64.58.41 2 u 506 1024 377 22.931 0.139 0.250
+ntp2.as3741.net 155.232.19.7 2 u 909 1024 377 7.272 0.200 0.299
-ntp2.inx.net.za 183.3.52.101 2 u 776 1024 377 7.324 0.175 0.300
102.222.100.153 196.21.187.2 2 u 12d 1024 0 7.937 0.836 0.000
+ntp5.inx.net.za 210.182.58.253 2 u 818 1024 377 7.521 0.052 0.360
+flipping.cloudh 80.72.67.48 3 u 576 1024 377 7.752 0.287 0.266
102.216.37.99 ( 210.182.58.253 2 u 98d 1024 0 73.586 -0.040 0.000
-139.84.231.151 102.176.229.251 2 u 1031 1024 177 22.739 0.400 1.549
Mon May 11 16:52:38 SAST 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (6479GB)
200GB available in /atlas/red...OK (9349GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 4.1T 6.2T 40% /
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 4.5T 9.0T 34% /
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
Mon May 11 16:52:38 SAST 2026 [elapsed=5 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
Mon May 11 16:52:38 SAST 2026 [elapsed=5 sec] Disabling mount tracking.
Mon May 11 16:52:38 SAST 2026 [elapsed=5 sec] SERVICES2
Mon May 11 16:52:38 SAST 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon May 11 16:52:42 SAST 2026 [elapsed=9 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= 932kB time=00:00:29.82 bitrate= 256.0kbits/s speed=1.48e+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
Mon May 11 16:56:01 SAST 2026 [elapsed=208 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: 112.14 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Mon May 11 16:57:01 SAST 2026 [elapsed=268 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon May 11 16:57:24 SAST 2026 [elapsed=291 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.8 IDLE
Mon May 11 16:57:24 SAST 2026 [elapsed=291 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (4 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-55.8C)
Checking CCD plane: Z0=+1633.00 DZDX=-881.00 DZDY=+612.00
acam: -56C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Mon May 11 16:57:24 SAST 2026 [elapsed=291 sec] WEATHER
status weather: R+ H+ 6.9C 100% 67/109kph@324 DP0.0C/1C/d IDLE
...OK
Mon May 11 16:57:25 SAST 2026 [elapsed=292 sec] MET
status...OK
met: c=Y o=N Rx9h Cx35 Wx55 Hx1d To44d Do1d wait RCWH IDLE
Mon May 11 16:57:25 SAST 2026 [elapsed=292 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon May 11 16:57:26 SAST 2026 [elapsed=293 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 141.07 -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 9 0.1%
A 0.051s 106 1.2%
A 0.081s 389 4.2%
A 0.111s 733 8.0%
A 0.141s 1189 13.0%
A 0.171s 1781 19.5%
A 0.202s 2465 26.9%
A 0.232s 3258 35.6%
A 0.262s 4163 45.5%
A 0.292s 5115 55.9%
A 0.323s 5990 65.4%
A 0.353s 6780 74.1%
A 0.383s 7438 81.3%
A 0.413s 8003 87.4%
A 0.444s 8465 92.5%
A 0.474s 8793 96.1%
A 0.504s 9024 98.6%
A 0.534s 9152 100.0%
B 0.020s 0 0.0%
B 0.050s 90 1.0%
B 0.081s 369 4.0%
B 0.111s 712 7.8%
B 0.141s 1179 12.9%
B 0.172s 1754 19.2%
B 0.202s 2440 26.7%
B 0.232s 3231 35.3%
B 0.262s 4134 45.2%
B 0.293s 5074 55.4%
B 0.323s 5963 65.1%
B 0.353s 6752 73.8%
B 0.383s 7416 81.0%
B 0.414s 7995 87.3%
B 0.444s 8446 92.3%
B 0.474s 8788 96.0%
B 0.504s 9026 98.6%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.050s 9065 99.0%
A 0.081s 8776 95.9%
A 0.111s 8416 91.9%
A 0.141s 7968 87.0%
A 0.172s 7375 80.6%
A 0.202s 6693 73.1%
A 0.232s 5895 64.4%
A 0.263s 4954 54.1%
A 0.293s 4017 43.9%
A 0.323s 3162 34.5%
A 0.353s 2377 26.0%
A 0.384s 1709 18.7%
A 0.414s 1128 12.3%
A 0.444s 698 7.6%
A 0.474s 355 3.9%
A 0.505s 126 1.4%
A 0.535s 11 0.1%
A 0.565s -8 0.0%
B 0.020s 9144 99.9%
B 0.050s 9030 98.6%
B 0.081s 8767 95.8%
B 0.111s 8413 91.9%
B 0.141s 7942 86.8%
B 0.171s 7361 80.4%
B 0.202s 6672 72.9%
B 0.232s 5869 64.1%
B 0.262s 4956 54.1%
B 0.293s 4021 43.9%
B 0.323s 3136 34.3%
B 0.353s 2359 25.8%
B 0.383s 1692 18.5%
B 0.414s 1123 12.3%
B 0.444s 683 7.5%
B 0.474s 345 3.8%
B 0.505s 120 1.3%
B 0.535s 8 0.1%
A 0 0.0mm 15 N F R | B -6 -0.2mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.534 seconds.
Shutter B opened to 99.9 percent in 0.535 seconds.
Shutter A closed to 0.0 percent in 0.565 seconds.
Shutter B closed to 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.11e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9198 IDLE
Mon May 11 16:58:18 SAST 2026 [elapsed=345 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.8 IDLE
taking preflight exposures:
acam...OK
acam image:
122M May 11 16:58 /atlas/obs/03a/61172/03a61172e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon May 11 16:58:40 SAST 2026 [elapsed=367 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (53 seconds old)
OTA humidity level...WARNING (37%)
WARNING (OTA humidity > 25 (37%); )
Dome humidity exists...OK
Dome humidity is current... OK
Mon May 11 16:58:40 SAST 2026 [elapsed=367 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61171.62408457|info|galildriver|using focus model: foc=9187+(4.30)*8.9+(-0.40)*60.2=9201.2
61171.62408982|info|galildriver|o 2 IN | cass: 3051750 15.26 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 53998984 9198 um b=8f M [focus]
61171.62410042|info|galildriver|o 2 IN | cass: 3051757 15.26 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 53999064 9198 um b=2f [cmd]
bestfocus for o...OK
Mon May 11 16:58:42 SAST 2026 [elapsed=369 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon May 11 16:59:11 SAST 2026 [elapsed=398 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
Mon May 11 16:59:12 SAST 2026 [elapsed=399 sec] NOTICES: det_dzdx=-881 is outside range +-250 from -558; det_dzdy=612 is outside range +-250 from -1915;
Mon May 11 16:59:12 SAST 2026 [elapsed=399 sec] WARNINGS: OTA humidity > 25 (37%);
Preflight completed with warnings. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Mon May 11 16:59:12 SAST 2026 [elapsed=399 sec] Happy observing!
Mon May 11 16:59:12 SAST 2026 [elapsed=399 sec] Preflight took 399 seconds to complete.
Mon May 11 16:59:12 SAST 2026 [elapsed=399 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 0.050s 114 1.2% A 0.081s 384 4.2% A 0.111s 723 7.9% A 0.141s 1180 12.9% A 0.171s 1760 19.2% A 0.202s 2442 26.7% A 0.232s 3239 35.4% A 0.262s 4144 45.3% A 0.292s 5074 55.4% A 0.322s 5969 65.2% A 0.353s 6753 73.8% A 0.383s 7413 81.0% A 0.413s 7989 87.3% A 0.443s 8446 92.3% A 0.473s 8783 95.9% A 0.504s 9022 98.6% A 0.534s 9136 99.8% A 0.564s 9153 100.0% B 0.020s 2 0.0% B 0.051s 119 1.3% B 0.081s 389 4.2% B 0.111s 742 8.1% B 0.141s 1220 13.3% B 0.172s 1795 19.6% B 0.202s 2491 27.2% B 0.232s 3293 36.0% B 0.262s 4200 45.9% B 0.293s 5134 56.1% B 0.323s 6016 65.7% B 0.353s 6793 74.2% B 0.383s 7459 81.5% B 0.414s 8018 87.6% B 0.444s 8470 92.5% B 0.474s 8805 96.2% B 0.504s 9023 98.6% B 0.534s 9138 99.8% B 0.565s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.050s 9049 98.9% A 0.081s 8778 95.9% A 0.111s 8421 92.0% A 0.141s 7957 86.9% A 0.171s 7381 80.6% A 0.201s 6716 73.4% A 0.232s 5894 64.4% A 0.262s 5012 54.8% A 0.292s 4069 44.5% A 0.322s 3192 34.9% A 0.352s 2410 26.3% A 0.383s 1731 18.9% A 0.413s 1163 12.7% A 0.443s 706 7.7% A 0.473s 368 4.0% A 0.504s 131 1.4% A 0.534s 15 0.2% A 0.564s 1 0.0% B 0.020s 9145 99.9% B 0.050s 9023 98.6% B 0.081s 8779 95.9% B 0.111s 8432 92.1% B 0.141s 7967 87.0% B 0.171s 7397 80.8% B 0.201s 6712 73.3% B 0.232s 5920 64.7% B 0.262s 5011 54.7% B 0.292s 4082 44.6% B 0.322s 3189 34.8% B 0.353s 2440 26.7% B 0.383s 1724 18.8% B 0.413s 1178 12.9% B 0.443s 725 7.9% B 0.474s 374 4.1% B 0.504s 143 1.6% B 0.534s 18 0.2% B 0.564s 0 0.0% A 1 0.0mm 15 N F R | B 1 0.0mm 15 N F R