STH Recent Preflight: 61137
Executing preflight for 61137 at Mon Apr 6 17:28:50 SAST 2026.
Log can be found in /atlas/obs/03/61137/preflight.dat.
Setting donefile '/atlas/obs/03/61137/preflight_complete.20260406152850.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260406152850.15307.
Mon Apr 6 17:28:50 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon Apr 6 17:28:50 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [2def718d-a15d-4f2c-aa9b-24ab6a689831;1800]
Mon Apr 6 17:28:50 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Mon Apr 6 17:28:51 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Mon Apr 6 17:28:51 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Mon Apr 6 17:28:51 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Mon Apr 6 17:28:51 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775489326
OK
Mon Apr 6 17:28:51 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Mon Apr 6 17:28:51 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
Mon Apr 6 17:28:53 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
Mon Apr 6 17:28:53 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Mon Apr 6 17:28:53 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Mon Apr 6 15:28:53 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 92m 1024 340 1.016 -0.024 0.054
*metbox2.sth.atl .PPS. 1 u 932 1024 377 0.249 0.003 0.052
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 504 1024 377 25.146 0.361 0.493
-ntp.as3741.net 146.64.8.7 2 u 537 1024 377 22.774 -0.025 0.082
+ntp2.as3741.net 155.232.19.6 2 u 81 1024 377 7.337 0.316 0.049
-ntp2.inx.net.za 196.21.187.2 2 u 917 1024 377 7.260 0.411 0.054
-102.222.100.153 155.232.19.6 2 u 585 1024 377 7.989 0.650 0.145
-ntp5.inx.net.za 196.21.187.2 2 u 496 1024 377 7.877 0.448 0.163
+flipping.cloudh 80.72.67.48 3 u 709 1024 377 8.109 0.331 0.038
102.216.37.99 ( 210.182.58.253 2 u 63d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 861 1024 377 23.544 0.184 0.411
Mon Apr 6 17:28:55 SAST 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (6274GB)
200GB available in /atlas/red...OK (8733GB)
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 5.1T 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
Mon Apr 6 17:28:55 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
Mon Apr 6 17:28:56 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Mon Apr 6 17:28:56 SAST 2026 [elapsed=6 sec] SERVICES2
Mon Apr 6 17:28:56 SAST 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon Apr 6 17:29:00 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= 932kB time=00:00:29.82 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
Mon Apr 6 17:32:19 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: 86.74 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Mon Apr 6 17:33:17 SAST 2026 [elapsed=267 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon Apr 6 17:33:38 SAST 2026 [elapsed=288 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.2 IDLE
Mon Apr 6 17:33:38 SAST 2026 [elapsed=288 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (8 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.5C)
Checking CCD plane: Z0=+1730.00 DZDX=-887.00 DZDY=+2855.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Mon Apr 6 17:33:38 SAST 2026 [elapsed=288 sec] WEATHER
status weather: clear 13.2C 50% 11/29kph@216 DP8.5C/-63C/d IDLE
...OK
Mon Apr 6 17:33:39 SAST 2026 [elapsed=289 sec] MET
status...OK
met: c=N o=Y Ro2d Co8h Wo5d Ho8h To9d Do3d IDLE
Mon Apr 6 17:33:39 SAST 2026 [elapsed=289 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon Apr 6 17:33:39 SAST 2026 [elapsed=289 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 115.66 -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 -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 8 0.1%
A 0.050s 109 1.2%
A 0.081s 392 4.3%
A 0.111s 732 8.0%
A 0.141s 1191 13.0%
A 0.172s 1782 19.5%
A 0.202s 2465 26.9%
A 0.233s 3288 35.9%
A 0.263s 4193 45.8%
A 0.293s 5143 56.2%
A 0.324s 6019 65.8%
A 0.354s 6803 74.3%
A 0.384s 7457 81.5%
A 0.415s 8017 87.6%
A 0.445s 8479 92.6%
A 0.475s 8800 96.1%
A 0.505s 9027 98.6%
A 0.536s 9155 100.0%
B 0.020s 1 0.0%
B 0.050s 105 1.1%
B 0.081s 394 4.3%
B 0.111s 740 8.1%
B 0.141s 1216 13.3%
B 0.172s 1797 19.6%
B 0.202s 2490 27.2%
B 0.232s 3282 35.9%
B 0.263s 4198 45.9%
B 0.293s 5132 56.1%
B 0.323s 6019 65.8%
B 0.354s 6796 74.2%
B 0.384s 7457 81.5%
B 0.414s 8026 87.7%
B 0.444s 8468 92.5%
B 0.475s 8807 96.2%
B 0.505s 9034 98.7%
B 0.535s 9147 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9063 99.0%
A 0.081s 8773 95.8%
A 0.111s 8415 91.9%
A 0.141s 7966 87.0%
A 0.172s 7374 80.6%
A 0.202s 6694 73.1%
A 0.232s 5896 64.4%
A 0.262s 4982 54.4%
A 0.293s 4047 44.2%
A 0.323s 3166 34.6%
A 0.353s 2375 25.9%
A 0.384s 1709 18.7%
A 0.414s 1148 12.5%
A 0.444s 698 7.6%
A 0.475s 344 3.8%
A 0.505s 123 1.3%
A 0.535s 13 0.1%
A 0.565s -7 0.0%
B 0.020s 9145 99.9%
B 0.050s 9027 98.6%
B 0.081s 8762 95.7%
B 0.111s 8411 91.9%
B 0.141s 7941 86.7%
B 0.172s 7359 80.4%
B 0.202s 6672 72.9%
B 0.232s 5869 64.1%
B 0.262s 4955 54.1%
B 0.293s 4022 43.9%
B 0.323s 3134 34.2%
B 0.353s 2361 25.8%
B 0.383s 1692 18.5%
B 0.414s 1125 12.3%
B 0.444s 685 7.5%
B 0.474s 345 3.8%
B 0.505s 122 1.3%
B 0.535s 10 0.1%
B 0.565s -5 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 0.536 seconds.
Shutter B opened to 99.9 percent in 0.535 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= 228kB time=00:00:07.29 bitrate= 256.1kbits/s speed=1.07e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9231 IDLE
Mon Apr 6 17:34:39 SAST 2026 [elapsed=349 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.2 IDLE
taking preflight exposures:
acam...OK
acam image:
126M Apr 6 17:34 /atlas/obs/03a/61137/03a61137e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon Apr 6 17:35:02 SAST 2026 [elapsed=372 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (75 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Mon Apr 6 17:35:02 SAST 2026 [elapsed=372 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61136.64933384|info|galildriver|using focus model: foc=9187+(4.30)*16.9+(-0.40)*60.2=9235.6
61136.64933909|info|galildriver|o 2 IN | cass: 3049727 15.25 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54005783 9232 um b=8f M [focus]
61136.64934969|info|galildriver|o 2 IN | cass: 3049731 15.25 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54005851 9232 um b=2f [cmd]
bestfocus for o...OK
Mon Apr 6 17:35:04 SAST 2026 [elapsed=374 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon Apr 6 17:35:33 SAST 2026 [elapsed=403 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
Mon Apr 6 17:35:34 SAST 2026 [elapsed=404 sec] NOTICES: det_dzdx=-887 is outside range +-250 from -558; det_dzdy=2855 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Mon Apr 6 17:35:35 SAST 2026 [elapsed=404 sec] Happy observing!
Mon Apr 6 17:35:35 SAST 2026 [elapsed=405 sec] Preflight took 404 seconds to complete.
Mon Apr 6 17:35:35 SAST 2026 [elapsed=405 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 0.051s 121 1.3% A 0.081s 387 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1783 19.5% A 0.202s 2465 26.9% A 0.232s 3267 35.7% A 0.262s 4174 45.6% A 0.292s 5104 55.8% A 0.322s 5997 65.5% A 0.353s 6775 74.0% A 0.383s 7433 81.2% A 0.413s 8006 87.5% A 0.443s 8445 92.3% A 0.473s 8783 95.9% A 0.504s 9022 98.6% A 0.534s 9136 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.051s 110 1.2% B 0.081s 379 4.1% B 0.111s 728 8.0% B 0.141s 1202 13.1% B 0.172s 1774 19.4% B 0.202s 2468 27.0% B 0.232s 3266 35.7% B 0.262s 4168 45.5% B 0.293s 5103 55.7% B 0.323s 5989 65.4% B 0.353s 6771 74.0% B 0.383s 7439 81.3% B 0.414s 8001 87.4% B 0.444s 8456 92.4% B 0.474s 8795 96.1% B 0.504s 9017 98.5% B 0.535s 9138 99.8% B 0.565s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9153 100.0% A 0.050s 9050 98.9% A 0.081s 8778 95.9% A 0.111s 8435 92.1% A 0.141s 7975 87.1% A 0.171s 7401 80.8% A 0.202s 6717 73.4% A 0.232s 5923 64.7% A 0.262s 5013 54.8% A 0.292s 4069 44.5% A 0.323s 3193 34.9% A 0.353s 2410 26.3% A 0.383s 1730 18.9% A 0.413s 1164 12.7% A 0.444s 705 7.7% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.535s 16 0.2% A 0.565s 3 0.0% B 0.020s 9144 99.9% B 0.050s 9017 98.5% B 0.081s 8770 95.8% B 0.111s 8420 92.0% B 0.141s 7951 86.9% B 0.172s 7377 80.6% B 0.202s 6688 73.1% B 0.232s 5892 64.4% B 0.262s 4980 54.4% B 0.293s 4050 44.2% B 0.323s 3191 34.9% B 0.353s 2417 26.4% B 0.383s 1726 18.9% B 0.413s 1162 12.7% B 0.444s 713 7.8% B 0.474s 364 4.0% B 0.504s 138 1.5% B 0.534s 15 0.2% B 0.565s 1 0.0% A -1 -0.0mm 15 N F R | B 1 0.0mm 15 N F R