STH Recent Preflight: 61142
Executing preflight for 61142 at Sat Apr 11 17:22:33 SAST 2026.
Log can be found in /atlas/obs/03/61142/preflight.dat.
Setting donefile '/atlas/obs/03/61142/preflight_complete.20260411152233.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260411152233.15307.
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [88da0940-c070-422c-932d-c897c1cac1d9;1800]
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775920951
OK
Sat Apr 11 17:22:34 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Apr 11 17:22:34 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
Sat Apr 11 17:22:36 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
Sat Apr 11 17:22:36 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Apr 11 17:22:36 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sat Apr 11 15:22:36 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 97 1024 377 1.041 -0.165 0.362
+metbox2.sth.atl .PPS. 1 u 275 1024 377 0.318 -0.221 0.043
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 1011 1024 377 25.090 -0.099 0.743
-ntp.as3741.net 146.64.8.7 2 u 1010 1024 377 23.616 0.076 0.390
-ntp2.as3741.net 155.232.19.6 2 u 228 1024 377 7.485 0.165 0.451
-ntp2.inx.net.za 196.21.187.2 2 u 727 1024 377 7.329 0.195 0.098
-102.222.100.153 155.232.19.6 2 u 247 1024 377 7.925 0.844 0.260
-ntp5.inx.net.za 183.3.52.101 2 u 861 1024 377 7.997 0.196 0.035
+flipping.cloudh 80.72.67.48 3 u 289 1024 377 8.127 0.091 0.055
102.216.37.99 ( 210.182.58.253 2 u 68d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 31 1024 377 23.499 -0.895 0.729
Sat Apr 11 17:22:41 SAST 2026 [elapsed=8 sec] DISKS
200GB available in /atlas/obs...OK (6173GB)
200GB available in /atlas/red...OK (8792GB)
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 8.4T 38% /
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
Sat Apr 11 17:22:41 SAST 2026 [elapsed=8 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
Sat Apr 11 17:22:42 SAST 2026 [elapsed=9 sec] Disabling mount tracking.
Sat Apr 11 17:22:42 SAST 2026 [elapsed=9 sec] SERVICES2
Sat Apr 11 17:22:42 SAST 2026 [elapsed=9 sec] CHILLER
status...OK
chiller: 2.9/3.0C ? chiller=ON dryer=? IDLE
Sat Apr 11 17:22:46 SAST 2026 [elapsed=13 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= 916kB time=00:00:29.31 bitrate= 256.0kbits/s speed=1.5e+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
Sat Apr 11 17:26:06 SAST 2026 [elapsed=213 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: 90.10 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sat Apr 11 17:27:03 SAST 2026 [elapsed=270 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Apr 11 17:27:24 SAST 2026 [elapsed=291 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=91.3 IDLE
Sat Apr 11 17:27:24 SAST 2026 [elapsed=291 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (6 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.6C)
Checking CCD plane: Z0=+1723.00 DZDX=-893.00 DZDY=+2733.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Apr 11 17:27:25 SAST 2026 [elapsed=292 sec] WEATHER
status weather: C+ H+ 13.0C 97% 20/25kph@273 DP0.3C/-7C/d IDLE
...OK
Sat Apr 11 17:27:25 SAST 2026 [elapsed=292 sec] MET
status...OK
met: c=Y o=N Ro25 Cx13h Wo10d Hx16h To14d Do18h wait CH IDLE
Sat Apr 11 17:27:25 SAST 2026 [elapsed=292 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Apr 11 17:27:27 SAST 2026 [elapsed=294 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 119.03 -14.63, az/alt=59.90 +60.06 tracking(w) IDLE 0s
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 8 0.1%
A 0.051s 101 1.1%
A 0.081s 382 4.2%
A 0.111s 733 8.0%
A 0.141s 1174 12.8%
A 0.172s 1762 19.2%
A 0.202s 2441 26.7%
A 0.232s 3233 35.3%
A 0.262s 4131 45.1%
A 0.293s 5085 55.5%
A 0.323s 5964 65.2%
A 0.353s 6755 73.8%
A 0.384s 7418 81.0%
A 0.414s 7984 87.2%
A 0.444s 8466 92.5%
A 0.474s 8792 96.0%
A 0.505s 9021 98.5%
A 0.535s 9152 100.0%
B 0.020s 2 0.0%
B 0.050s 106 1.2%
B 0.081s 394 4.3%
B 0.111s 739 8.1%
B 0.141s 1215 13.3%
B 0.172s 1796 19.6%
B 0.202s 2488 27.2%
B 0.232s 3283 35.9%
B 0.262s 4200 45.9%
B 0.292s 5130 56.0%
B 0.323s 6019 65.8%
B 0.353s 6798 74.3%
B 0.383s 7456 81.5%
B 0.413s 8012 87.5%
B 0.444s 8468 92.5%
B 0.474s 8798 96.1%
B 0.504s 9029 98.6%
B 0.534s 9144 99.9%
B 0.564s 9161 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9057 98.9%
A 0.081s 8772 95.8%
A 0.111s 8402 91.8%
A 0.141s 7951 86.9%
A 0.172s 7353 80.3%
A 0.202s 6671 72.9%
A 0.232s 5867 64.1%
A 0.263s 4982 54.4%
A 0.293s 4018 43.9%
A 0.323s 3136 34.3%
A 0.353s 2353 25.7%
A 0.384s 1689 18.5%
A 0.414s 1130 12.3%
A 0.444s 686 7.5%
A 0.475s 345 3.8%
A 0.505s 123 1.3%
A 0.535s 13 0.1%
A 0.565s -6 0.0%
B 0.020s 9144 99.9%
B 0.050s 9027 98.6%
B 0.081s 8762 95.7%
B 0.111s 8412 91.9%
B 0.141s 7940 86.7%
B 0.171s 7359 80.4%
B 0.202s 6672 72.9%
B 0.232s 5869 64.1%
B 0.262s 4986 54.5%
B 0.292s 4052 44.3%
B 0.323s 3134 34.2%
B 0.353s 2361 25.8%
B 0.383s 1693 18.5%
B 0.413s 1124 12.3%
B 0.443s 685 7.5%
B 0.474s 355 3.9%
B 0.504s 127 1.4%
B 0.534s 12 0.1%
B 0.564s -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 0.535 seconds.
Shutter B opened to 100.0 percent in 0.564 seconds.
Shutter A closed to 0.0 percent in 0.565 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=1.14e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=c[1] foc=9228 IDLE
Sat Apr 11 17:28:31 SAST 2026 [elapsed=358 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:
122M Apr 11 17:28 /atlas/obs/03a/61142/03a61142e0001c.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Apr 11 17:28:53 SAST 2026 [elapsed=380 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (66 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Apr 11 17:28:53 SAST 2026 [elapsed=380 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61141.64507041|info|galildriver|using focus model: foc=9187+(4.30)*16.1+(-0.40)*60.2=9232.1
61141.64507565|info|galildriver|c 1 IN | cass: 20073 0.10 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 54005069 9228 um b=8f M [focus]
61141.64508626|info|galildriver|c 1 IN | cass: 20069 0.10 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 54005141 9229 um b=2f [cmd]
bestfocus for c...OK
Sat Apr 11 17:28:56 SAST 2026 [elapsed=383 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Apr 11 17:29:26 SAST 2026 [elapsed=413 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
Sat Apr 11 17:29:27 SAST 2026 [elapsed=414 sec] NOTICES: det_dzdx=-893 is outside range +-250 from -558; det_dzdy=2733 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Sat Apr 11 17:29:27 SAST 2026 [elapsed=414 sec] Happy observing!
Sat Apr 11 17:29:27 SAST 2026 [elapsed=414 sec] Preflight took 413 seconds to complete.
Sat Apr 11 17:29:27 SAST 2026 [elapsed=414 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