STH Recent Preflight: 61143
Executing preflight for 61143 at Sun Apr 12 17:21:22 SAST 2026.
Log can be found in /atlas/obs/03/61143/preflight.dat.
Setting donefile '/atlas/obs/03/61143/preflight_complete.20260412152122.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260412152122.15307.
Sun Apr 12 17:21:22 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sun Apr 12 17:21:22 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [c2738b1a-c346-458a-9f6b-abff20e59629;1800]
Sun Apr 12 17:21:22 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sun Apr 12 17:21:23 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sun Apr 12 17:21:23 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sun Apr 12 17:21:23 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sun Apr 12 17:21:23 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776007278
OK
Sun Apr 12 17:21:23 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sun Apr 12 17:21:23 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 Apr 12 17:21:25 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 Apr 12 17:21:25 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sun Apr 12 17:21:25 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sun Apr 12 15:21:25 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 697 1024 377 1.059 -0.178 0.274
*metbox2.sth.atl .PPS. 1 u 1023 1024 377 0.304 -0.174 0.079
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 772 1024 377 25.096 0.416 0.597
-ntp.as3741.net 146.64.8.7 2 u 878 1024 377 22.810 -0.325 0.194
-ntp2.as3741.net 155.232.19.6 2 u 788 1024 377 7.256 0.209 0.116
-ntp2.inx.net.za 183.3.52.101 2 u 319 1024 377 7.342 0.309 0.073
-102.222.100.153 196.21.187.2 2 u 110 1024 377 7.880 0.904 1.507
-ntp5.inx.net.za 183.3.52.101 2 u 803 1024 377 8.068 0.205 0.117
+flipping.cloudh 80.72.67.48 3 u 117 1024 377 8.172 0.255 0.187
102.216.37.99 ( 210.182.58.253 2 u 69d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 653 1024 377 23.648 2.031 1.507
Sun Apr 12 17:21:27 SAST 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (6171GB)
200GB available in /atlas/red...OK (8841GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 4.4T 5.9T 43% /
admin:/dev/loop1 105M 105M 0 100% /snap/core/17272
admin:/dev/loop2 106M 106M 0 100% /snap/core/17284
archon:/dev/sda2 117G 21G 91G 19% /
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
archon:/dev/loop2 105M 105M 0 100% /snap/core/17272
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
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 5.0T 8.5T 37% /
proc1:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc1:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/md0p1 15T 1.7T 12T 13% /
proc2:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc3:/dev/md0p1 15T 736G 13T 6% /
proc3:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Sun Apr 12 17:21:27 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
Sun Apr 12 17:21:27 SAST 2026 [elapsed=5 sec] Disabling mount tracking.
Sun Apr 12 17:21:27 SAST 2026 [elapsed=5 sec] SERVICES2
Sun Apr 12 17:21:27 SAST 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sun Apr 12 17:21:32 SAST 2026 [elapsed=10 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=1.45e+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 Apr 12 17:24:51 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: 90.78 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sun Apr 12 17:25:49 SAST 2026 [elapsed=267 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sun Apr 12 17:26:10 SAST 2026 [elapsed=288 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=91.3 IDLE
Sun Apr 12 17:26:10 SAST 2026 [elapsed=288 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (9 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.5C)
Checking CCD plane: Z0=+1731.00 DZDX=-890.00 DZDY=+2903.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sun Apr 12 17:26:10 SAST 2026 [elapsed=288 sec] WEATHER
status weather: C 14.6C 71% 10/14kph@253 DP5.7C/43C/d IDLE
...OK
Sun Apr 12 17:26:11 SAST 2026 [elapsed=289 sec] MET
status...OK
met: c=N o=Y Ro1d Co47 Wo11d Ho2h To15d Do1d IDLE
Sun Apr 12 17:26:11 SAST 2026 [elapsed=289 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sun Apr 12 17:26:11 SAST 2026 [elapsed=289 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 119.70 -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 -1 0.0%
A 2 0.1mm 15 N F R | B -1 -0.0mm 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 109 1.2%
A 0.081s 393 4.3%
A 0.111s 733 8.0%
A 0.142s 1190 13.0%
A 0.172s 1782 19.5%
A 0.202s 2465 26.9%
A 0.233s 3259 35.6%
A 0.263s 4161 45.5%
A 0.293s 5115 55.9%
A 0.324s 5991 65.4%
A 0.354s 6780 74.1%
A 0.384s 7439 81.3%
A 0.415s 8000 87.4%
A 0.445s 8478 92.6%
A 0.475s 8792 96.0%
A 0.505s 9027 98.6%
A 0.536s 9155 100.0%
B 0.020s 1 0.0%
B 0.050s 97 1.1%
B 0.081s 385 4.2%
B 0.111s 727 7.9%
B 0.141s 1197 13.1%
B 0.171s 1777 19.4%
B 0.202s 2464 26.9%
B 0.232s 3256 35.6%
B 0.262s 4169 45.5%
B 0.292s 5101 55.7%
B 0.322s 5991 65.4%
B 0.353s 6752 73.8%
B 0.383s 7416 81.0%
B 0.413s 7995 87.3%
B 0.443s 8444 92.2%
B 0.474s 8787 96.0%
B 0.504s 9023 98.6%
B 0.534s 9141 99.9%
B 0.564s 9161 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9064 99.0%
A 0.081s 8771 95.8%
A 0.111s 8414 91.9%
A 0.141s 7967 87.0%
A 0.172s 7374 80.6%
A 0.202s 6693 73.1%
A 0.232s 5897 64.4%
A 0.263s 4983 54.4%
A 0.293s 4046 44.2%
A 0.323s 3166 34.6%
A 0.354s 2376 26.0%
A 0.384s 1709 18.7%
A 0.414s 1148 12.5%
A 0.444s 698 7.6%
A 0.475s 355 3.9%
A 0.505s 129 1.4%
A 0.535s 12 0.1%
A 0.566s -6 0.0%
B 0.020s 9145 99.9%
B 0.050s 9028 98.6%
B 0.081s 8761 95.7%
B 0.111s 8412 91.9%
B 0.141s 7939 86.7%
B 0.172s 7358 80.4%
B 0.202s 6672 72.9%
B 0.232s 5897 64.4%
B 0.262s 4955 54.1%
B 0.293s 4022 43.9%
B 0.323s 3136 34.3%
B 0.353s 2363 25.8%
B 0.384s 1693 18.5%
B 0.414s 1125 12.3%
B 0.444s 684 7.5%
B 0.474s 346 3.8%
B 0.505s 122 1.3%
B 0.535s 9 0.1%
A 1 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 0.536 seconds.
Shutter B opened to 100.0 percent in 0.564 seconds.
Shutter A closed to 0.0 percent in 0.566 seconds.
Shutter B closed to 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 232kB time=00:00:07.42 bitrate= 256.1kbits/s speed=1.04e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=c[1] foc=9229 IDLE
Sun Apr 12 17:26:47 SAST 2026 [elapsed=325 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=91.3 IDLE
taking preflight exposures:
acam...OK
acam image:
125M Apr 12 17:27 /atlas/obs/03a/61143/03a61143e0001c.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sun Apr 12 17:27:10 SAST 2026 [elapsed=348 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (53 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Sun Apr 12 17:27:10 SAST 2026 [elapsed=348 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61142.64387139|info|galildriver|using focus model: foc=9187+(4.30)*17.1+(-0.40)*60.2=9236.4
61142.64387663|info|galildriver|c 1 IN | cass: 19402 0.10 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 54005336 9230 um b=8f M [focus]
61142.64388724|info|galildriver|c 1 IN | cass: 19404 0.10 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 54005415 9230 um b=2f [cmd]
bestfocus for c...OK
Sun Apr 12 17:27:12 SAST 2026 [elapsed=350 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sun Apr 12 17:27:42 SAST 2026 [elapsed=380 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 Apr 12 17:27:44 SAST 2026 [elapsed=382 sec] NOTICES: det_dzdx=-890 is outside range +-250 from -558; det_dzdy=2903 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 Apr 12 17:27:44 SAST 2026 [elapsed=382 sec] Happy observing!
Sun Apr 12 17:27:44 SAST 2026 [elapsed=382 sec] Preflight took 382 seconds to complete.
Sun Apr 12 17:27:44 SAST 2026 [elapsed=382 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 122 1.3% A 0.082s 405 4.4% A 0.112s 762 8.3% A 0.143s 1231 13.4% A 0.173s 1843 20.1% A 0.203s 2538 27.7% A 0.234s 3350 36.6% A 0.264s 4265 46.6% A 0.295s 5191 56.7% A 0.325s 6078 66.4% A 0.356s 6843 74.8% A 0.386s 7513 82.1% A 0.417s 8071 88.2% A 0.447s 8507 92.9% A 0.478s 8828 96.4% A 0.508s 9049 98.9% A 0.538s 9146 99.9% B 0.020s 2 0.0% B 0.051s 110 1.2% B 0.081s 387 4.2% B 0.111s 741 8.1% B 0.142s 1219 13.3% B 0.172s 1796 19.6% B 0.203s 2492 27.2% B 0.233s 3322 36.3% B 0.264s 4229 46.2% B 0.294s 5161 56.4% B 0.324s 6044 66.0% B 0.355s 6818 74.5% B 0.386s 7480 81.7% B 0.416s 8050 87.9% B 0.447s 8493 92.8% B 0.477s 8822 96.4% B 0.508s 9039 98.7% B 0.538s 9144 99.9% B 0.569s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.051s 9050 98.9% A 0.081s 8777 95.9% A 0.112s 8408 91.9% A 0.142s 7941 86.7% A 0.173s 7359 80.4% A 0.203s 6668 72.8% A 0.234s 5839 63.8% A 0.264s 4920 53.7% A 0.295s 3979 43.5% A 0.325s 3111 34.0% A 0.355s 2340 25.6% A 0.386s 1670 18.2% A 0.416s 1114 12.2% A 0.446s 669 7.3% A 0.477s 339 3.7% A 0.507s 114 1.2% A 0.538s 10 0.1% A 0.568s 2 0.0% B 0.020s 9145 99.9% B 0.051s 9018 98.5% B 0.081s 8772 95.8% B 0.111s 8420 92.0% B 0.142s 7951 86.9% B 0.172s 7378 80.6% B 0.203s 6690 73.1% B 0.233s 5865 64.1% B 0.264s 4950 54.1% B 0.294s 4022 43.9% B 0.324s 3137 34.3% B 0.355s 2370 25.9% B 0.385s 1683 18.4% B 0.415s 1131 12.4% B 0.445s 687 7.5% B 0.476s 347 3.8% B 0.506s 127 1.4% B 0.536s 12 0.1% B 0.566s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R