STH Recent Preflight: 61171
Executing preflight for 61171 at Sun May 10 16:53:11 SAST 2026.
Log can be found in /atlas/obs/03/61171/preflight.dat.
Setting donefile '/atlas/obs/03/61171/preflight_complete.20260510145311.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260510145311.11042.
Sun May 10 16:53:11 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sun May 10 16:53:11 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [ac8205b9-66cf-4b1f-a76f-fd4cb9650784;1800]
Sun May 10 16:53:11 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sun May 10 16:53:12 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sun May 10 16:53:12 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sun May 10 16:53:12 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sun May 10 16:53:12 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1778424792
OK
Sun May 10 16:53:12 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sun May 10 16:53:12 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
Sun May 10 16:53:14 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
Sun May 10 16:53:14 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sun May 10 16:53:14 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sun May 10 14:53:14 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 67 1024 377 1.053 0.001 0.046
*metbox2.sth.atl .PPS. 1 u 185 1024 377 0.281 -0.040 0.014
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 816 1024 377 24.284 0.127 0.160
-ntp.as3741.net 146.64.58.41 2 u 828 1024 377 23.723 0.268 0.344
+ntp2.as3741.net 155.232.19.7 2 u 937 1024 377 7.224 -0.045 0.084
-ntp2.inx.net.za 183.3.52.101 2 u 812 1024 377 7.304 0.075 0.047
102.222.100.153 196.21.187.2 2 u 11d 1024 0 7.937 0.836 0.000
-ntp5.inx.net.za 183.3.52.101 2 u 901 1024 377 7.565 0.112 0.107
-flipping.cloudh 80.72.67.48 3 u 686 1024 377 7.985 0.078 0.085
102.216.37.99 ( 210.182.58.253 2 u 97d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 38 1024 377 22.753 -0.426 0.465
Sun May 10 16:53:17 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (6383GB)
200GB available in /atlas/red...OK (9318GB)
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 4.5T 8.9T 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
Sun May 10 16:53:17 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
Sun May 10 16:53:17 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Sun May 10 16:53:18 SAST 2026 [elapsed=7 sec] SERVICES2
Sun May 10 16:53:18 SAST 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sun May 10 16:53:22 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=1.47e+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
Sun May 10 16:56:40 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: 111.32 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sun May 10 16:57:39 SAST 2026 [elapsed=268 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sun May 10 16:58:00 SAST 2026 [elapsed=289 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.8 IDLE
Sun May 10 16:58:00 SAST 2026 [elapsed=289 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (3 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-56.1C)
Checking CCD plane: Z0=+1599.00 DZDX=-874.00 DZDY=-125.00
acam: -56C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sun May 10 16:58:00 SAST 2026 [elapsed=289 sec] WEATHER
status weather: C+ W+ H+ -0.2C 99% 61/86kph@314 DP0.0C/1C/d IDLE
...OK
Sun May 10 16:58:01 SAST 2026 [elapsed=290 sec] MET
status...OK
met: c=Y o=N Rs0 Cx2h Wx0 Hx13h To43d Do21h wait RCWH IDLE
Sun May 10 16:58:01 SAST 2026 [elapsed=290 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sun May 10 16:58:03 SAST 2026 [elapsed=292 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 140.24 -14.63, az/alt=59.89 +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 103 1.1%
A 0.081s 395 4.3%
A 0.111s 732 8.0%
A 0.141s 1188 13.0%
A 0.171s 1778 19.4%
A 0.202s 2466 26.9%
A 0.232s 3258 35.6%
A 0.262s 4163 45.5%
A 0.292s 5116 55.9%
A 0.323s 5989 65.4%
A 0.353s 6780 74.1%
A 0.385s 7437 81.2%
A 0.417s 8055 88.0%
A 0.449s 8538 93.3%
A 0.480s 8845 96.6%
A 0.510s 9060 99.0%
A 0.540s 9163 100.0%
B 0.020s 1 0.0%
B 0.050s 87 1.0%
B 0.081s 363 4.0%
B 0.111s 711 7.8%
B 0.141s 1194 13.0%
B 0.172s 1772 19.4%
B 0.202s 2464 26.9%
B 0.232s 3257 35.6%
B 0.262s 4166 45.5%
B 0.293s 5103 55.7%
B 0.323s 5990 65.4%
B 0.353s 6752 73.8%
B 0.384s 7437 81.2%
B 0.414s 8012 87.5%
B 0.444s 8446 92.3%
B 0.474s 8789 96.0%
B 0.505s 9033 98.7%
B 0.535s 9147 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.051s 9060 99.0%
A 0.081s 8769 95.8%
A 0.111s 8405 91.8%
A 0.141s 7952 86.9%
A 0.172s 7356 80.4%
A 0.202s 6669 72.9%
A 0.232s 5867 64.1%
A 0.263s 4954 54.1%
A 0.293s 4017 43.9%
A 0.323s 3136 34.3%
A 0.353s 2354 25.7%
A 0.384s 1685 18.4%
A 0.414s 1130 12.3%
A 0.444s 685 7.5%
A 0.475s 343 3.7%
A 0.505s 121 1.3%
A 0.535s 8 0.1%
B 0.020s 9145 99.9%
B 0.050s 9032 98.7%
B 0.081s 8771 95.8%
B 0.111s 8415 91.9%
B 0.141s 7944 86.8%
B 0.172s 7361 80.4%
B 0.202s 6672 72.9%
B 0.232s 5869 64.1%
B 0.263s 4955 54.1%
B 0.293s 4021 43.9%
B 0.323s 3135 34.2%
B 0.353s 2360 25.8%
B 0.384s 1712 18.7%
B 0.414s 1138 12.4%
B 0.444s 695 7.6%
B 0.474s 354 3.9%
B 0.505s 120 1.3%
B 0.535s 5 0.1%
A 0 0.0mm 15 N F R | B -9 -0.3mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.540 seconds.
Shutter B opened to 99.9 percent in 0.535 seconds.
Shutter A closed to 0.1 percent in 0.535 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=1.23e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9186 IDLE
Sun May 10 16:58:41 SAST 2026 [elapsed=330 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:
123M May 10 16:58 /atlas/obs/03a/61171/03a61171e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sun May 10 16:59:03 SAST 2026 [elapsed=352 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (76 seconds old)
OTA humidity level...OK (14%)
Dome humidity exists...OK
Dome humidity is current... OK
Sun May 10 16:59:03 SAST 2026 [elapsed=352 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61170.62435457|info|galildriver|using focus model: foc=9187+(4.30)*5.3+(-0.40)*60.2=9185.7
61170.62435946|info|galildriver|o 2 IN | cass: 3053720 15.27 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 53996758 9187 um b=2f [cmd]
bestfocus for o...OK
Sun May 10 16:59:05 SAST 2026 [elapsed=354 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sun May 10 16:59:35 SAST 2026 [elapsed=384 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
Sun May 10 16:59:37 SAST 2026 [elapsed=386 sec] NOTICES: det_dzdx=-874 is outside range +-250 from -558; det_dzdy=-125 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Sun May 10 16:59:37 SAST 2026 [elapsed=386 sec] Happy observing!
Sun May 10 16:59:37 SAST 2026 [elapsed=386 sec] Preflight took 386 seconds to complete.
Sun May 10 16:59:37 SAST 2026 [elapsed=386 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 113 1.2% A 0.081s 386 4.2% A 0.111s 736 8.0% A 0.141s 1195 13.1% A 0.171s 1782 19.5% A 0.202s 2465 26.9% A 0.232s 3266 35.7% A 0.262s 4175 45.6% A 0.292s 5104 55.8% A 0.323s 5997 65.5% A 0.353s 6776 74.0% A 0.383s 7434 81.2% A 0.414s 8005 87.4% A 0.444s 8459 92.4% A 0.474s 8792 96.0% A 0.504s 9027 98.6% A 0.535s 9139 99.8% A 0.565s 9154 100.0% B 0.020s 0 0.0% B 0.050s 113 1.2% B 0.081s 378 4.1% B 0.111s 728 8.0% B 0.141s 1202 13.1% B 0.171s 1772 19.4% B 0.202s 2465 26.9% B 0.232s 3266 35.7% B 0.262s 4167 45.5% B 0.292s 5103 55.7% B 0.322s 5988 65.4% B 0.353s 6771 74.0% B 0.383s 7419 81.0% B 0.413s 7987 87.3% B 0.443s 8457 92.4% B 0.474s 8786 96.0% B 0.504s 9018 98.5% B 0.534s 9137 99.8% B 0.564s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.050s 9056 98.9% A 0.081s 8778 95.9% A 0.111s 8433 92.1% A 0.141s 7975 87.1% A 0.171s 7401 80.8% A 0.202s 6715 73.4% A 0.232s 5922 64.7% A 0.262s 5013 54.8% A 0.292s 4068 44.4% A 0.323s 3193 34.9% A 0.353s 2410 26.3% A 0.383s 1731 18.9% A 0.413s 1163 12.7% A 0.444s 706 7.7% A 0.474s 367 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 9024 98.6% B 0.081s 8779 95.9% B 0.111s 8433 92.1% B 0.141s 7967 87.0% B 0.171s 7397 80.8% B 0.201s 6712 73.3% B 0.231s 5921 64.7% B 0.262s 5011 54.7% B 0.292s 4110 44.9% B 0.322s 3216 35.1% B 0.352s 2440 26.7% B 0.383s 1745 19.1% B 0.413s 1178 12.9% B 0.443s 725 7.9% B 0.474s 373 4.1% B 0.504s 144 1.6% B 0.534s 17 0.2% B 0.564s 0 0.0% A 1 0.0mm 15 N F R | B 0 0.0mm 15 N F R