STH Recent Preflight: 61127
Executing preflight for 61127 at Fri Mar 27 17:41:30 SAST 2026.
Log can be found in /atlas/obs/03/61127/preflight.dat.
Setting donefile '/atlas/obs/03/61127/preflight_complete.20260327154130.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260327154130.15307.
Fri Mar 27 17:41:30 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Fri Mar 27 17:41:30 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [1e29cf4f-64a3-449e-97b2-6232fc961aa9;1800]
Fri Mar 27 17:41:30 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Fri Mar 27 17:41:31 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Fri Mar 27 17:41:31 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Fri Mar 27 17:41:31 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Fri Mar 27 17:41:31 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1774626088
OK
Fri Mar 27 17:41:31 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Fri Mar 27 17:41:31 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
Fri Mar 27 17:41:32 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
Fri Mar 27 17:41:33 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Fri Mar 27 17:41:33 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Fri Mar 27 15:41:33 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 69m 1024 370 1.033 0.027 0.044
*metbox2.sth.atl .PPS. 1 u 40 1024 377 0.301 -0.036 0.036
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.8 2 u 318 1024 377 25.063 -0.121 1.382
+ntp.as3741.net 146.64.8.7 2 u 281 1024 377 22.754 -0.127 0.086
-ntp2.as3741.net 155.232.19.6 2 u 1025 1024 377 7.320 0.225 0.085
-ntp2.inx.net.za 183.3.52.101 2 u 165 1024 377 7.257 0.405 0.114
-102.222.100.153 155.232.19.6 2 u 239 1024 377 7.834 0.363 0.857
-ntp5.inx.net.za 183.3.52.101 2 u 1007 1024 377 7.980 0.344 0.172
+flipping.cloudh 80.72.67.48 3 u 232 1024 377 8.194 0.241 0.117
102.216.37.99 ( 210.182.58.253 2 u 53d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 909 1024 377 23.565 0.967 0.989
Fri Mar 27 17:41:45 SAST 2026 [elapsed=15 sec] DISKS
200GB available in /atlas/obs...OK (6282GB)
200GB available in /atlas/red...OK (9309GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 4.3T 6.0T 42% /
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 4.5T 8.9T 34% /
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 735G 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
Fri Mar 27 17:41:45 SAST 2026 [elapsed=15 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
Fri Mar 27 17:41:45 SAST 2026 [elapsed=15 sec] Disabling mount tracking.
Fri Mar 27 17:41:45 SAST 2026 [elapsed=15 sec] SERVICES2
Fri Mar 27 17:41:45 SAST 2026 [elapsed=15 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Fri Mar 27 17:41:49 SAST 2026 [elapsed=19 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= 922kB time=00:00:29.50 bitrate= 256.0kbits/s speed=1.42e+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
Fri Mar 27 17:45:08 SAST 2026 [elapsed=218 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: 80.09 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Fri Mar 27 17:46:06 SAST 2026 [elapsed=276 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Fri Mar 27 17:46:27 SAST 2026 [elapsed=297 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Fri Mar 27 17:46:27 SAST 2026 [elapsed=297 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 (-54.2C)
Checking CCD plane: Z0=+1746.00 DZDX=-890.00 DZDY=+3227.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Fri Mar 27 17:46:27 SAST 2026 [elapsed=297 sec] WEATHER
status weather: C W 19.8C 69% 32/40kph DP6.2C/29C/d IDLE
...OK
Fri Mar 27 17:46:27 SAST 2026 [elapsed=297 sec] MET
status...OK
met: c=N o=N Rc6 Cx0 Wx0 Hc6 Tc6 Dc6 wait RCWHTD IDLE
Fri Mar 27 17:46:27 SAST 2026 [elapsed=297 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Fri Mar 27 17:46:35 SAST 2026 [elapsed=305 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 109.02 -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 383 4.2%
A 0.111s 734 8.0%
A 0.142s 1191 13.0%
A 0.172s 1781 19.5%
A 0.202s 2466 26.9%
A 0.232s 3260 35.6%
A 0.263s 4162 45.5%
A 0.293s 5115 55.9%
A 0.323s 5991 65.4%
A 0.354s 6779 74.1%
A 0.384s 7440 81.3%
A 0.414s 7998 87.4%
A 0.444s 8465 92.5%
A 0.475s 8792 96.0%
A 0.505s 9019 98.5%
A 0.535s 9151 100.0%
B 0.020s 0 0.0%
B 0.050s 92 1.0%
B 0.081s 376 4.1%
B 0.111s 714 7.8%
B 0.141s 1180 12.9%
B 0.172s 1758 19.2%
B 0.202s 2440 26.7%
B 0.232s 3231 35.3%
B 0.262s 4139 45.2%
B 0.293s 5073 55.4%
B 0.323s 5962 65.1%
B 0.353s 6753 73.8%
B 0.384s 7435 81.2%
B 0.414s 8011 87.5%
B 0.444s 8456 92.4%
B 0.475s 8796 96.1%
B 0.505s 9028 98.6%
B 0.535s 9143 99.9%
B 0.566s 9160 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9063 99.0%
A 0.081s 8771 95.8%
A 0.111s 8412 91.9%
A 0.141s 7968 87.0%
A 0.172s 7374 80.6%
A 0.202s 6692 73.1%
A 0.232s 5898 64.4%
A 0.262s 4982 54.4%
A 0.293s 4043 44.2%
A 0.323s 3167 34.6%
A 0.353s 2375 25.9%
A 0.383s 1710 18.7%
A 0.414s 1149 12.6%
A 0.444s 697 7.6%
A 0.474s 356 3.9%
A 0.505s 130 1.4%
A 0.535s 12 0.1%
A 0.565s -7 0.0%
B 0.020s 9146 99.9%
B 0.051s 9034 98.7%
B 0.081s 8761 95.7%
B 0.111s 8411 91.9%
B 0.142s 7938 86.7%
B 0.172s 7358 80.4%
B 0.202s 6671 72.9%
B 0.232s 5868 64.1%
B 0.263s 4955 54.1%
B 0.293s 4022 43.9%
B 0.323s 3137 34.3%
B 0.354s 2360 25.8%
B 0.384s 1694 18.5%
B 0.414s 1125 12.3%
B 0.444s 685 7.5%
B 0.475s 346 3.8%
B 0.505s 122 1.3%
B 0.535s 11 0.1%
B 0.565s -6 0.0%
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 0.535 seconds.
Shutter B opened to 100.0 percent in 0.566 seconds.
Shutter A closed to 0.0 percent in 0.565 seconds.
Shutter B closed to 0.0 percent in 0.565 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed= 981x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9237 IDLE
Fri Mar 27 17:47:11 SAST 2026 [elapsed=341 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
taking preflight exposures:
acam...OK
acam image:
124M Mar 27 17:47 /atlas/obs/03a/61127/03a61127e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Fri Mar 27 17:47:33 SAST 2026 [elapsed=363 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (16 seconds old)
OTA humidity level...OK (7%)
Dome humidity exists...OK
Dome humidity is current... OK
Fri Mar 27 17:47:33 SAST 2026 [elapsed=363 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61126.65803281|info|galildriver|using focus model: foc=9187+(4.30)*19.1+(-0.40)*60.2=9245.0
61126.65803805|info|galildriver|o 2 IN | cass: 3048233 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54006798 9237 um b=8f M [focus]
61126.65804866|info|galildriver|o 2 IN | cass: 3048234 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54006803 9237 um b=2f [cmd]
bestfocus for o...OK
Fri Mar 27 17:47:36 SAST 2026 [elapsed=366 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Fri Mar 27 17:48:05 SAST 2026 [elapsed=395 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
Fri Mar 27 17:48:06 SAST 2026 [elapsed=396 sec] NOTICES: det_dzdx=-890 is outside range +-250 from -558; det_dzdy=3227 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Fri Mar 27 17:48:06 SAST 2026 [elapsed=396 sec] Happy observing!
Fri Mar 27 17:48:06 SAST 2026 [elapsed=396 sec] Preflight took 396 seconds to complete.
Fri Mar 27 17:48:06 SAST 2026 [elapsed=396 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 0.050s 117 1.3% A 0.081s 382 4.2% A 0.111s 718 7.8% A 0.141s 1181 12.9% A 0.171s 1759 19.2% A 0.201s 2441 26.7% A 0.232s 3238 35.4% A 0.262s 4143 45.3% A 0.292s 5078 55.5% A 0.322s 5962 65.1% A 0.352s 6757 73.8% A 0.383s 7412 81.0% A 0.413s 7991 87.3% A 0.443s 8446 92.3% A 0.473s 8778 95.9% A 0.504s 9023 98.6% A 0.534s 9136 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.050s 121 1.3% B 0.081s 390 4.3% B 0.111s 741 8.1% B 0.141s 1220 13.3% B 0.172s 1794 19.6% B 0.202s 2491 27.2% B 0.232s 3297 36.0% B 0.262s 4198 45.9% B 0.293s 5134 56.1% B 0.323s 6014 65.7% B 0.353s 6794 74.2% B 0.384s 7460 81.5% B 0.414s 8018 87.6% B 0.444s 8469 92.5% B 0.474s 8804 96.2% B 0.504s 9029 98.6% B 0.535s 9140 99.8% B 0.565s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9155 100.0% A 0.050s 9052 98.9% A 0.081s 8776 95.9% A 0.111s 8426 92.0% A 0.141s 7966 87.0% A 0.171s 7385 80.7% A 0.202s 6693 73.1% A 0.232s 5904 64.5% A 0.262s 4982 54.4% A 0.292s 4044 44.2% A 0.322s 3172 34.7% A 0.353s 2382 26.0% A 0.383s 1714 18.7% A 0.413s 1146 12.5% A 0.443s 693 7.6% A 0.474s 359 3.9% A 0.504s 124 1.4% A 0.534s 15 0.2% A 0.565s 3 0.0% B 0.020s 9141 99.9% B 0.050s 9016 98.5% B 0.081s 8770 95.8% B 0.111s 8421 92.0% B 0.141s 7951 86.9% B 0.171s 7376 80.6% B 0.202s 6687 73.1% B 0.232s 5890 64.3% B 0.262s 4981 54.4% B 0.292s 4052 44.3% B 0.323s 3162 34.5% B 0.353s 2390 26.1% B 0.383s 1704 18.6% B 0.413s 1148 12.5% B 0.444s 699 7.6% B 0.474s 356 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