STH Recent Preflight: 61133
Executing preflight for 61133 at Thu Apr 2 17:33:52 SAST 2026.
Log can be found in /atlas/obs/03/61133/preflight.dat.
Setting donefile '/atlas/obs/03/61133/preflight_complete.20260402153352.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260402153352.15307.
Thu Apr 2 17:33:52 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Thu Apr 2 17:33:52 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [a8c2349a-c0b3-4d17-8b05-86ea9dd29bf3;1800]
Thu Apr 2 17:33:52 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Thu Apr 2 17:33:53 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Thu Apr 2 17:33:53 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Thu Apr 2 17:33:53 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Thu Apr 2 17:33:53 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775144029
OK
Thu Apr 2 17:33:53 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Thu Apr 2 17:33:53 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
Thu Apr 2 17:33:55 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
Thu Apr 2 17:33:55 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Thu Apr 2 17:33:55 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Thu Apr 2 15:33:55 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 56 1024 377 0.976 0.051 0.120
+metbox2.sth.atl .PPS. 1 u 977 1024 377 0.276 -0.030 0.086
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 196.21.187.2 2 u 297 1024 377 25.157 0.691 0.427
+ntp.as3741.net 146.64.8.7 2 u 883 1024 377 22.719 -0.032 0.278
-ntp2.as3741.net 155.232.19.6 2 u 872 1024 377 7.246 0.305 0.136
-ntp2.inx.net.za 210.182.58.253 2 u 904 1024 377 7.295 0.465 0.086
-102.222.100.153 155.232.19.6 2 u 879 1024 377 7.581 1.051 0.281
-ntp5.inx.net.za 183.3.52.101 2 u 967 1024 377 7.814 0.418 0.886
-flipping.cloudh 80.72.67.48 3 u 657 1024 377 8.119 0.131 0.286
102.216.37.99 ( 210.182.58.253 2 u 59d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 102.176.229.251 2 u 976 1024 377 23.546 0.440 0.882
Thu Apr 2 17:33:58 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (6136GB)
200GB available in /atlas/red...OK (8774GB)
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 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
Thu Apr 2 17:33:59 SAST 2026 [elapsed=7 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
Thu Apr 2 17:33:59 SAST 2026 [elapsed=7 sec] Disabling mount tracking.
Thu Apr 2 17:33:59 SAST 2026 [elapsed=7 sec] SERVICES2
Thu Apr 2 17:33:59 SAST 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Thu Apr 2 17:34:03 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= 918kB time=00:00:29.37 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
Thu Apr 2 17:37:25 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: 84.08 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Thu Apr 2 17:38:25 SAST 2026 [elapsed=273 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (5 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.2C)
Checking CCD plane: Z0=+1753.00 DZDX=-893.00 DZDY=+3418.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] WEATHER
status weather: C 20.2C 65% 19/23kph@347 DP5.7C/-36C/d IDLE
...OK
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] MET
status...OK
met: c=N o=N Ro5h Cx0 Wo1d Ho5h To5d Do8h wait C IDLE
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Thu Apr 2 17:38:46 SAST 2026 [elapsed=294 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 113.01 -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 9 0.1%
A 0.051s 116 1.3%
A 0.081s 404 4.4%
A 0.112s 745 8.1%
A 0.142s 1208 13.2%
A 0.172s 1803 19.7%
A 0.203s 2512 27.4%
A 0.233s 3317 36.2%
A 0.264s 4226 46.2%
A 0.294s 5172 56.5%
A 0.324s 6046 66.0%
A 0.354s 6826 74.6%
A 0.385s 7477 81.7%
A 0.415s 8033 87.8%
A 0.445s 8490 92.7%
A 0.476s 8809 96.2%
A 0.506s 9033 98.7%
A 0.536s 9154 100.0%
B 0.020s 1 0.0%
B 0.051s 99 1.1%
B 0.081s 386 4.2%
B 0.112s 726 7.9%
B 0.142s 1216 13.3%
B 0.172s 1797 19.6%
B 0.203s 2489 27.2%
B 0.233s 3286 35.9%
B 0.264s 4199 45.9%
B 0.294s 5130 56.0%
B 0.324s 6019 65.8%
B 0.355s 6797 74.3%
B 0.385s 7457 81.5%
B 0.415s 8027 87.7%
B 0.446s 8479 92.6%
B 0.476s 8816 96.3%
B 0.506s 9039 98.7%
B 0.537s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9151 100.0%
A 0.050s 9068 99.1%
A 0.081s 8771 95.8%
A 0.111s 8413 91.9%
A 0.142s 7967 87.0%
A 0.172s 7372 80.5%
A 0.202s 6693 73.1%
A 0.233s 5897 64.4%
A 0.263s 4982 54.4%
A 0.293s 4046 44.2%
A 0.323s 3165 34.6%
A 0.354s 2376 26.0%
A 0.384s 1712 18.7%
A 0.414s 1147 12.5%
A 0.445s 698 7.6%
A 0.475s 357 3.9%
A 0.505s 128 1.4%
A 0.535s 12 0.1%
A 0.566s -6 0.0%
B 0.020s 9146 99.9%
B 0.050s 9035 98.7%
B 0.081s 8769 95.8%
B 0.111s 8423 92.0%
B 0.141s 7956 86.9%
B 0.172s 7379 80.6%
B 0.202s 6695 73.1%
B 0.232s 5895 64.4%
B 0.262s 4984 54.4%
B 0.293s 4050 44.2%
B 0.323s 3164 34.6%
B 0.353s 2363 25.8%
B 0.384s 1713 18.7%
B 0.414s 1125 12.3%
B 0.444s 698 7.6%
B 0.474s 356 3.9%
B 0.505s 128 1.4%
B 0.535s 13 0.1%
B 0.565s -4 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 0.536 seconds.
Shutter B opened to 99.9 percent in 0.537 seconds.
Shutter A closed to 0.0 percent in 0.566 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=1.08e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9244 IDLE
Thu Apr 2 17:39:29 SAST 2026 [elapsed=337 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 Apr 2 17:39 /atlas/obs/03a/61133/03a61133e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Thu Apr 2 17:39:52 SAST 2026 [elapsed=360 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (5 seconds old)
OTA humidity level...OK (5%)
Dome humidity exists...OK
Dome humidity is current... OK
Thu Apr 2 17:39:52 SAST 2026 [elapsed=360 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61132.65269404|info|galildriver|using focus model: foc=9187+(4.30)*20.0+(-0.40)*60.2=9248.9
61132.65269928|info|galildriver|o 2 IN | cass: 3047588 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54008377 9245 um b=8f M [focus]
61132.65270988|info|galildriver|o 2 IN | cass: 3047591 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54008455 9245 um b=2f [cmd]
bestfocus for o...OK
Thu Apr 2 17:39:54 SAST 2026 [elapsed=362 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Thu Apr 2 17:40:25 SAST 2026 [elapsed=393 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
Thu Apr 2 17:40:27 SAST 2026 [elapsed=395 sec] NOTICES: det_dzdx=-893 is outside range +-250 from -558; det_dzdy=3418 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Thu Apr 2 17:40:27 SAST 2026 [elapsed=395 sec] Happy observing!
Thu Apr 2 17:40:27 SAST 2026 [elapsed=395 sec] Preflight took 395 seconds to complete.
Thu Apr 2 17:40:27 SAST 2026 [elapsed=395 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 6 0.1% A 0.050s 123 1.3% A 0.081s 391 4.3% A 0.111s 744 8.1% A 0.141s 1197 13.1% A 0.171s 1780 19.4% A 0.202s 2465 26.9% A 0.232s 3267 35.7% A 0.262s 4174 45.6% A 0.293s 5136 56.1% A 0.323s 5991 65.4% A 0.353s 6779 74.1% A 0.383s 7432 81.2% A 0.413s 8008 87.5% A 0.444s 8458 92.4% A 0.474s 8788 96.0% A 0.504s 9029 98.6% A 0.535s 9139 99.8% A 0.565s 9153 100.0% B 0.020s 1 0.0% B 0.050s 121 1.3% B 0.081s 378 4.1% B 0.111s 730 8.0% B 0.141s 1202 13.1% B 0.171s 1774 19.4% B 0.201s 2468 27.0% B 0.232s 3268 35.7% B 0.262s 4167 45.5% B 0.292s 5103 55.7% B 0.322s 5989 65.4% B 0.353s 6772 74.0% B 0.383s 7439 81.3% B 0.413s 8000 87.4% B 0.443s 8456 92.4% B 0.473s 8796 96.1% B 0.503s 9016 98.5% B 0.534s 9137 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9155 100.0% A 0.050s 9056 98.9% A 0.081s 8793 96.1% A 0.111s 8440 92.2% A 0.141s 7982 87.2% A 0.171s 7406 80.9% A 0.202s 6715 73.4% A 0.232s 5929 64.8% A 0.262s 5012 54.8% A 0.293s 4071 44.5% A 0.323s 3199 34.9% A 0.353s 2404 26.3% A 0.383s 1733 18.9% A 0.414s 1161 12.7% A 0.444s 705 7.7% A 0.474s 369 4.0% A 0.504s 129 1.4% A 0.535s 17 0.2% A 0.565s 3 0.0% B 0.020s 9145 99.9% B 0.050s 9018 98.5% B 0.081s 8770 95.8% B 0.111s 8421 92.0% B 0.141s 7968 87.0% B 0.171s 7399 80.8% B 0.202s 6713 73.3% B 0.232s 5921 64.7% B 0.262s 5010 54.7% B 0.292s 4081 44.6% B 0.323s 3192 34.9% B 0.353s 2417 26.4% B 0.383s 1724 18.8% B 0.413s 1163 12.7% B 0.443s 712 7.8% B 0.474s 365 4.0% B 0.504s 138 1.5% B 0.534s 17 0.2% B 0.565s 0 0.0% A -1 -0.0mm 15 N F R | B 0 0.0mm 15 N F R