STH Recent Preflight: 61153
Executing preflight for 61153 at Wed Apr 22 17:09:54 SAST 2026.
Log can be found in /atlas/obs/03/61153/preflight.dat.
Setting donefile '/atlas/obs/03/61153/preflight_complete.20260422150954.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260422150954.11042.
Wed Apr 22 17:09:54 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Wed Apr 22 17:09:54 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [94ded8dd-a2e2-4be9-87de-e05dcf4b2ede;1800]
Wed Apr 22 17:09:54 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Wed Apr 22 17:09:55 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Wed Apr 22 17:09:55 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Wed Apr 22 17:09:55 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Wed Apr 22 17:09:55 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776870587
OK
Wed Apr 22 17:09:55 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Wed Apr 22 17:09:55 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
Wed Apr 22 17:09:57 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
Wed Apr 22 17:09:57 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Wed Apr 22 17:09:57 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Wed Apr 22 15:09:57 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 1571 1024 376 1.012 0.123 0.897
*metbox2.sth.atl .PPS. 1 u 641 1024 377 0.298 0.059 0.048
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 229.179.94.34 2 u 817 1024 377 24.132 0.646 0.257
-ntp.as3741.net 146.64.58.41 2 u 1019 1024 377 27.310 2.382 2.402
-ntp2.as3741.net 155.232.19.7 2 u 633 1024 377 7.204 0.319 0.057
-ntp2.inx.net.za 210.182.58.253 2 u 555 1024 377 7.309 0.565 0.055
-102.222.100.153 155.232.19.6 2 u 605 1024 377 7.889 0.909 0.386
-ntp5.inx.net.za 183.3.52.101 2 u 571 1024 377 7.853 0.560 0.132
+flipping.cloudh 80.72.67.48 3 u 43 1024 377 8.154 0.338 0.068
102.216.37.99 ( 210.182.58.253 2 u 79d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 84 1024 377 23.517 -0.242 0.561
Wed Apr 22 17:09:59 SAST 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (6213GB)
200GB available in /atlas/red...OK (8904GB)
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/loop2 106M 106M 0 100% /snap/core/17284
admin:/dev/loop0 106M 106M 0 100% /snap/core/17292
archon:/dev/sda2 117G 21G 91G 19% /
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
archon:/dev/loop0 106M 106M 0 100% /snap/core/17292
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 4.9T 8.5T 37% /
proc1:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc1:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc2:/dev/md0p1 15T 1.7T 12T 13% /
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 736G 13T 6% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17292
Wed Apr 22 17:09:59 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
Wed Apr 22 17:09:59 SAST 2026 [elapsed=5 sec] Disabling mount tracking.
Wed Apr 22 17:09:59 SAST 2026 [elapsed=5 sec] SERVICES2
Wed Apr 22 17:09:59 SAST 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Wed Apr 22 17:10:03 SAST 2026 [elapsed=9 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= 912kB time=00:00:29.18 bitrate= 256.0kbits/s speed=1.49e+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
Wed Apr 22 17:13:18 SAST 2026 [elapsed=204 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: 97.75 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Wed Apr 22 17:14:18 SAST 2026 [elapsed=264 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 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 (-55.3C)
Checking CCD plane: Z0=+1673.00 DZDX=-887.00 DZDY=+1520.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 sec] WEATHER
status weather: clear 6.8C 66% 23/36kph@146 DP5.5C/-26C/d IDLE
...OK
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 sec] MET
status...OK
met: c=N o=Y Ro2d Co8h Wo2d Ho7h To25d Do5d IDLE
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Wed Apr 22 17:14:39 SAST 2026 [elapsed=285 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 126.67 -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 9 0.1%
A 0.051s 100 1.1%
A 0.081s 379 4.1%
A 0.111s 720 7.9%
A 0.141s 1172 12.8%
A 0.172s 1761 19.2%
A 0.202s 2442 26.7%
A 0.232s 3231 35.3%
A 0.263s 4133 45.1%
A 0.293s 5085 55.5%
A 0.323s 5964 65.2%
A 0.353s 6757 73.8%
A 0.383s 7419 81.0%
A 0.414s 7985 87.2%
A 0.444s 8453 92.3%
A 0.474s 8784 96.0%
A 0.504s 9016 98.5%
A 0.535s 9151 100.0%
B 0.020s 2 0.0%
B 0.050s 95 1.0%
B 0.081s 379 4.1%
B 0.111s 727 7.9%
B 0.141s 1196 13.1%
B 0.171s 1776 19.4%
B 0.202s 2464 26.9%
B 0.232s 3257 35.6%
B 0.262s 4165 45.5%
B 0.292s 5103 55.7%
B 0.323s 5991 65.4%
B 0.353s 6774 74.0%
B 0.383s 7436 81.2%
B 0.413s 8011 87.5%
B 0.444s 8457 92.4%
B 0.474s 8798 96.1%
B 0.504s 9031 98.7%
B 0.534s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.051s 9058 99.0%
A 0.081s 8764 95.7%
A 0.111s 8390 91.7%
A 0.142s 7933 86.7%
A 0.172s 7333 80.1%
A 0.202s 6646 72.6%
A 0.232s 5840 63.8%
A 0.263s 4923 53.8%
A 0.293s 3988 43.6%
A 0.323s 3137 34.3%
A 0.354s 2329 25.4%
A 0.384s 1667 18.2%
A 0.414s 1114 12.2%
A 0.445s 673 7.4%
A 0.475s 336 3.7%
A 0.505s 119 1.3%
A 0.535s 7 0.1%
B 0.020s 9146 99.9%
B 0.050s 9043 98.8%
B 0.081s 8785 96.0%
B 0.111s 8439 92.2%
B 0.141s 7976 87.1%
B 0.172s 7400 80.8%
B 0.202s 6719 73.4%
B 0.232s 5924 64.7%
B 0.263s 5016 54.8%
B 0.293s 4079 44.6%
B 0.323s 3191 34.9%
B 0.353s 2407 26.3%
B 0.384s 1732 18.9%
B 0.414s 1155 12.6%
B 0.444s 708 7.7%
B 0.475s 364 4.0%
B 0.505s 133 1.5%
B 0.535s 13 0.1%
B 0.566s -7 0.0%
A 0 0.0mm 15 N F R | B -6 -0.2mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.535 seconds.
Shutter B opened to 99.9 percent in 0.534 seconds.
Shutter A closed to 0.1 percent in 0.535 seconds.
Shutter B closed to 0.0 percent in 0.566 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... conversion FAILED! Bogus AAC file?
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9209 IDLE
Wed Apr 22 17:15:25 SAST 2026 [elapsed=331 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:
126M Apr 22 17:15 /atlas/obs/03a/61153/03a61153e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Wed Apr 22 17:15:47 SAST 2026 [elapsed=353 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (0 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Wed Apr 22 17:15:47 SAST 2026 [elapsed=353 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61152.63597334|info|galildriver|using focus model: foc=9187+(4.30)*11.8+(-0.40)*60.2=9213.6
61152.63597858|info|galildriver|o 2 IN | cass: 3049907 15.25 mm b=23 move=NO | arm: 408711 475.81 mm b=03 move=OK | foc: 54001285 9210 um b=8f M [focus]
61152.63598918|info|galildriver|o 2 IN | cass: 3049907 15.25 mm b=23 move=NO | arm: 408711 475.81 mm b=03 move=OK | foc: 54001351 9210 um b=2f [cmd]
bestfocus for o...OK
Wed Apr 22 17:15:50 SAST 2026 [elapsed=356 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Wed Apr 22 17:16:19 SAST 2026 [elapsed=385 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
Wed Apr 22 17:16:20 SAST 2026 [elapsed=386 sec] NOTICES: det_dzdx=-887 is outside range +-250 from -558; det_dzdy=1520 is outside range +-250 from -1915;
Wed Apr 22 17:16:20 SAST 2026 [elapsed=386 sec] WARNINGS: DFM shutter audio conversion to WAV failed (bad AAC file?);
Preflight completed with warnings. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Wed Apr 22 17:16:20 SAST 2026 [elapsed=386 sec] Happy observing!
Wed Apr 22 17:16:20 SAST 2026 [elapsed=386 sec] Preflight took 386 seconds to complete.
Wed Apr 22 17:16:20 SAST 2026 [elapsed=386 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 2 0.0% A 0.050s 107 1.2% A 0.081s 376 4.1% A 0.111s 723 7.9% A 0.141s 1180 12.9% A 0.171s 1762 19.2% A 0.201s 2442 26.7% A 0.232s 3239 35.4% A 0.262s 4112 44.9% A 0.292s 5044 55.1% A 0.322s 5942 64.9% A 0.352s 6730 73.5% A 0.383s 7394 80.8% A 0.413s 7972 87.1% A 0.443s 8431 92.1% A 0.474s 8772 95.8% A 0.504s 9017 98.5% A 0.534s 9133 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.050s 117 1.3% B 0.081s 390 4.3% B 0.111s 742 8.1% B 0.141s 1220 13.3% B 0.172s 1795 19.6% B 0.202s 2492 27.2% B 0.232s 3295 36.0% B 0.262s 4197 45.8% B 0.292s 5133 56.1% B 0.323s 6016 65.7% B 0.353s 6796 74.2% B 0.383s 7456 81.5% B 0.413s 8002 87.4% B 0.443s 8454 92.4% B 0.474s 8794 96.1% B 0.504s 9024 98.6% B 0.534s 9138 99.8% B 0.564s 9155 100.0% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.050s 9051 98.9% A 0.081s 8778 95.9% A 0.111s 8420 92.0% A 0.141s 7958 86.9% A 0.171s 7380 80.6% A 0.202s 6691 73.1% A 0.232s 5893 64.4% A 0.262s 4984 54.4% A 0.292s 4039 44.1% A 0.322s 3164 34.6% A 0.353s 2386 26.1% A 0.383s 1710 18.7% A 0.413s 1147 12.5% A 0.443s 694 7.6% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.534s 16 0.2% A 0.564s 1 0.0% B 0.020s 9145 99.9% B 0.050s 9018 98.5% B 0.081s 8771 95.8% B 0.111s 8422 92.0% B 0.141s 7951 86.9% B 0.171s 7378 80.6% B 0.202s 6711 73.3% B 0.232s 5921 64.7% B 0.262s 5012 54.8% B 0.292s 4081 44.6% B 0.322s 3191 34.9% B 0.353s 2415 26.4% B 0.383s 1725 18.8% B 0.413s 1165 12.7% B 0.443s 712 7.8% B 0.473s 366 4.0% B 0.504s 139 1.5% B 0.534s 16 0.2% B 0.564s 0 0.0% A 1 0.0mm 15 N F R | B 0 0.0mm 15 N F R