STH Recent Preflight: 61271
Executing preflight for 61271 at Tue Aug 18 17:13:47 SAST 2026.
Log can be found in /atlas/obs/03/61271/preflight.dat.
Setting donefile '/atlas/obs/03/61271/preflight_complete.20260818151347.7763' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260818151347.7763.
Tue Aug 18 17:13:48 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Tue Aug 18 17:13:48 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [8d9783cd-70a7-4ad7-986d-cd83393a6f47;1800]
Tue Aug 18 17:13:48 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Tue Aug 18 17:13:49 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Tue Aug 18 17:13:49 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Tue Aug 18 17:13:49 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Tue Aug 18 17:13:49 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1787066021
OK
Tue Aug 18 17:13:49 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Tue Aug 18 17:13:49 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
Tue Aug 18 17:13:50 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
Tue Aug 18 17:13:51 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Tue Aug 18 17:13:51 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Tue Aug 18 15:13:51 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 52m 1024 64 1.039 0.069 0.151
*metbox2.sth.atl .PPS. 1 u 178 1024 377 0.288 0.029 0.047
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-146.64.24.58 183.3.52.101 2 u 23 1024 377 24.048 0.336 0.404
+ntp.as3741.net 146.64.58.41 2 u 113 1024 377 23.303 -0.385 1.258
-ntp2.as3741.net 129.134.28.123 2 u 941 1024 377 7.268 -0.902 0.654
+ntp2.inx.net.za 183.3.52.101 2 u 1057 1024 377 7.253 0.072 0.120
-ntp5.inx.net.za 183.3.52.101 2 u 972 1024 377 7.876 0.437 0.301
#102.222.156.151 155.232.19.7 2 u 620 1024 375 24.621 0.343 0.287
+ntp2.nog.net.za 80.72.67.48 3 u 999 1024 377 7.531 0.104 0.082
-139.84.231.68 ( 196.21.187.2 2 u 854 1024 377 24.056 -0.289 1.207
-ntp8.inx.net.za 183.3.52.101 2 u 136 1024 377 16.872 0.188 0.295
Tue Aug 18 17:13:54 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (5416GB)
200GB available in /atlas/red...OK (7985GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 5.1T 5.2T 50% /
admin:/dev/loop0 106M 106M 0 100% /snap/core/17284
admin:/dev/loop1 106M 106M 0 100% /snap/core/17292
archon:/dev/sda2 117G 22G 89G 20% /
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
archon:/dev/loop0 106M 106M 0 100% /snap/core/17292
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
tcs:/dev/mapper/ubuntu--vg-ubuntu--lv 98G 38G 56G 41% /
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 5.8T 7.7T 43% /
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/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 737G 13T 6% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17292
Tue Aug 18 17:13:54 SAST 2026 [elapsed=6 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
Tue Aug 18 17:13:54 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Tue Aug 18 17:13:55 SAST 2026 [elapsed=7 sec] SERVICES2
Tue Aug 18 17:13:55 SAST 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.1/3.0C ? chiller=ON dryer=? IDLE
Tue Aug 18 17:13:59 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= 936kB time=00:00:29.95 bitrate= 256.0kbits/s speed=1.16e+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
Tue Aug 18 17:16:33 SAST 2026 [elapsed=165 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: 214.84 -29.49, az/alt=324.74 +86.49 idle(e) IDLE
Tue Aug 18 17:17:24 SAST 2026 [elapsed=216 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Tue Aug 18 17:17:44 SAST 2026 [elapsed=236 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.8 IDLE
Tue Aug 18 17:17:44 SAST 2026 [elapsed=236 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (7 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.3C)
Checking CCD plane: Z0=+1740.00 DZDX=-896.00 DZDY=+3091.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Tue Aug 18 17:17:44 SAST 2026 [elapsed=236 sec] WEATHER
status weather: clear 17.4C 32% 14/20kph@295 DP15.4C/-43C/d IDLE
...OK
Tue Aug 18 17:17:45 SAST 2026 [elapsed=237 sec] MET
status...OK
met: c=N o=Y Ro6d Co3d Wo7d Ho5d To61d Do26d IDLE
Tue Aug 18 17:17:46 SAST 2026 [elapsed=238 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Tue Aug 18 17:17:46 SAST 2026 [elapsed=238 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 243.76 -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 9 0.1%
A 0.051s 116 1.3%
A 0.081s 404 4.4%
A 0.111s 745 8.1%
A 0.142s 1206 13.2%
A 0.172s 1805 19.7%
A 0.202s 2489 27.2%
A 0.232s 3289 35.9%
A 0.263s 4194 45.8%
A 0.293s 5144 56.2%
A 0.323s 6018 65.7%
A 0.353s 6802 74.3%
A 0.384s 7460 81.5%
A 0.414s 8016 87.6%
A 0.444s 8477 92.6%
A 0.475s 8801 96.1%
A 0.505s 9027 98.6%
A 0.535s 9151 100.0%
B 0.020s 1 0.0%
B 0.050s 105 1.1%
B 0.081s 393 4.3%
B 0.111s 738 8.1%
B 0.141s 1217 13.3%
B 0.172s 1797 19.6%
B 0.202s 2490 27.2%
B 0.232s 3284 35.9%
B 0.262s 4198 45.9%
B 0.293s 5130 56.0%
B 0.323s 6022 65.8%
B 0.353s 6798 74.3%
B 0.384s 7454 81.4%
B 0.414s 8026 87.7%
B 0.444s 8467 92.5%
B 0.474s 8806 96.2%
B 0.505s 9034 98.7%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.050s 9065 99.0%
A 0.081s 8771 95.8%
A 0.111s 8413 91.9%
A 0.141s 7969 87.1%
A 0.171s 7373 80.5%
A 0.202s 6691 73.1%
A 0.232s 5898 64.4%
A 0.262s 4982 54.4%
A 0.292s 4043 44.2%
A 0.323s 3166 34.6%
A 0.353s 2376 26.0%
A 0.383s 1711 18.7%
A 0.414s 1147 12.5%
A 0.444s 698 7.6%
A 0.474s 355 3.9%
A 0.505s 128 1.4%
A 0.535s 14 0.2%
A 0.565s -5 0.0%
B 0.020s 9146 99.9%
B 0.050s 9031 98.7%
B 0.081s 8771 95.8%
B 0.111s 8423 92.0%
B 0.141s 7957 86.9%
B 0.172s 7359 80.4%
B 0.202s 6671 72.9%
B 0.232s 5868 64.1%
B 0.263s 4954 54.1%
B 0.293s 4024 44.0%
B 0.323s 3136 34.3%
B 0.353s 2361 25.8%
B 0.384s 1713 18.7%
B 0.414s 1141 12.5%
B 0.444s 697 7.6%
B 0.474s 357 3.9%
B 0.505s 128 1.4%
B 0.535s 13 0.1%
B 0.565s -4 0.0%
A 0 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 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=1.13e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9307 IDLE
Tue Aug 18 17:18:24 SAST 2026 [elapsed=276 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.8 IDLE
taking preflight exposures:
acam...OK
acam image:
124M Aug 18 17:18 /atlas/obs/03a/61271/03a61271e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Tue Aug 18 17:18:46 SAST 2026 [elapsed=298 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (26 seconds old)
OTA humidity level...OK (15%)
Dome humidity exists...OK
Dome humidity is current... OK
Tue Aug 18 17:18:46 SAST 2026 [elapsed=298 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61270.63804602|info|galildriver|using focus model: foc=9187+(4.30)*18.2+(-0.40)*60.2=9241.2
61270.63805138|info|galildriver|o 2 IN | cass: 3040022 15.20 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54020793 9307 um b=8f M [focus]
61270.63806046|info|galildriver|o 2 IN | cass: 3040024 15.20 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54015910 9283 um b=8f M [focus]
61270.63807210|info|galildriver|o 2 IN | cass: 3040020 15.20 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54009180 9249 um b=8f M [focus]
61270.63807782|info|galildriver|o 2 IN | cass: 3040022 15.20 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54007928 9243 um b=8f M [focus]
61270.63808541|info|galildriver|o 2 IN | cass: 3040021 15.20 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54007685 9242 um b=0f [cmd]
bestfocus for o...OK
Tue Aug 18 17:18:51 SAST 2026 [elapsed=303 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Tue Aug 18 17:19:17 SAST 2026 [elapsed=329 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
Tue Aug 18 17:19:18 SAST 2026 [elapsed=330 sec] NOTICES: det_dzdx=-896 is outside range +-250 from -558; det_dzdy=3091 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Tue Aug 18 17:19:18 SAST 2026 [elapsed=330 sec] Happy observing!
Tue Aug 18 17:19:18 SAST 2026 [elapsed=330 sec] Preflight took 330 seconds to complete.
Tue Aug 18 17:19:18 SAST 2026 [elapsed=330 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 115 1.3% A 0.082s 384 4.2% A 0.112s 736 8.0% A 0.142s 1197 13.1% A 0.173s 1803 19.7% A 0.203s 2489 27.2% A 0.234s 3295 36.0% A 0.264s 4204 45.9% A 0.295s 5132 56.1% A 0.325s 6053 66.1% A 0.356s 6820 74.5% A 0.387s 7474 81.6% A 0.417s 8038 87.8% A 0.448s 8494 92.8% A 0.478s 8821 96.4% A 0.509s 9043 98.8% A 0.539s 9145 99.9% B 0.020s 1 0.0% B 0.051s 104 1.1% B 0.081s 380 4.2% B 0.112s 727 7.9% B 0.142s 1201 13.1% B 0.172s 1772 19.4% B 0.203s 2465 26.9% B 0.233s 3270 35.7% B 0.263s 4168 45.5% B 0.294s 5133 56.1% B 0.324s 6015 65.7% B 0.355s 6794 74.2% B 0.385s 7460 81.5% B 0.416s 8019 87.6% B 0.446s 8468 92.5% B 0.477s 8814 96.3% B 0.507s 9034 98.7% B 0.538s 9142 99.9% B 0.568s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9150 100.0% A 0.051s 9043 98.8% A 0.081s 8768 95.8% A 0.111s 8407 91.8% A 0.141s 7941 86.7% A 0.172s 7360 80.4% A 0.202s 6668 72.8% A 0.232s 5867 64.1% A 0.262s 4950 54.1% A 0.292s 4010 43.8% A 0.323s 3139 34.3% A 0.353s 2363 25.8% A 0.383s 1690 18.5% A 0.413s 1130 12.3% A 0.444s 681 7.4% A 0.474s 358 3.9% A 0.504s 120 1.3% A 0.534s 13 0.1% A 0.565s 1 0.0% B 0.020s 9146 99.9% B 0.050s 9027 98.6% B 0.081s 8781 95.9% B 0.111s 8436 92.2% B 0.141s 7970 87.1% B 0.171s 7400 80.8% B 0.202s 6713 73.3% B 0.232s 5921 64.7% B 0.262s 5012 54.8% B 0.292s 4086 44.6% B 0.323s 3192 34.9% B 0.353s 2414 26.4% B 0.383s 1724 18.8% B 0.413s 1163 12.7% B 0.443s 712 7.8% B 0.474s 375 4.1% B 0.504s 144 1.6% B 0.534s 18 0.2% B 0.564s 0 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R