STH Recent Preflight: 61100
Executing preflight for 61100 at Sat Feb 28 18:15:36 SAST 2026.
Log can be found in /atlas/obs/03/61100/preflight.dat.
Setting donefile '/atlas/obs/03/61100/preflight_complete.20260228161536.25684' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260228161536.25684.
Sat Feb 28 18:15:36 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Feb 28 18:15:36 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [5c14338a-17a4-4fe8-b3a1-3ae59cf8596e;1800]
Sat Feb 28 18:15:36 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Feb 28 18:15:37 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Feb 28 18:15:37 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat Feb 28 18:15:37 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Feb 28 18:15:37 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1772295328
OK
Sat Feb 28 18:15:37 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Feb 28 18:15:37 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
Sat Feb 28 18:15:39 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
Sat Feb 28 18:15:39 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Feb 28 18:15:40 SAST 2026 [elapsed=4 sec] CLOCKS
admin: Sat Feb 28 16:15:40 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 568 1024 17 1.072 0.076 0.029
*metbox2.sth.atl .PPS. 1 u 48 1024 377 0.292 0.024 0.097
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 188 1024 377 23.244 -0.303 0.532
-ntp.as3741.net 146.64.8.7 2 u 887 1024 377 22.756 0.097 0.347
+ntp2.as3741.net 155.232.19.6 2 u 274 1024 377 7.199 -0.010 0.069
-ntp2.inx.net.za 183.3.52.101 2 u 200 1024 377 7.266 0.052 0.125
-102.222.100.153 155.232.19.6 2 u 604 1024 377 7.911 1.130 0.288
-ntp5.inx.net.za 196.21.187.2 2 u 902 1024 377 7.887 0.176 0.131
-flipping.cloudh 80.72.67.48 3 u 642 1024 377 8.102 -0.041 0.429
102.216.37.99 ( 210.182.58.253 2 u 26d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 90 1024 377 22.738 0.720 0.404
Sat Feb 28 18:15:44 SAST 2026 [elapsed=8 sec] DISKS
200GB available in /atlas/obs...OK (6114GB)
200GB available in /atlas/red...OK (9022GB)
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/loop0 105M 105M 0 100% /snap/core/17247
admin:/dev/loop1 105M 105M 0 100% /snap/core/17272
archon:/dev/sda2 117G 21G 91G 19% /
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
archon:/dev/loop0 105M 105M 0 100% /snap/core/17247
archon:/dev/loop2 105M 105M 0 100% /snap/core/17272
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 4.8T 8.7T 36% /
proc1:/dev/loop1 105M 105M 0 100% /snap/core/17247
proc1:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc2:/dev/md0p1 15T 1.7T 12T 13% /
proc2:/dev/loop0 105M 105M 0 100% /snap/core/17247
proc2:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc3:/dev/md0p1 15T 734G 13T 6% /
proc3:/dev/loop1 105M 105M 0 100% /snap/core/17247
proc3:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop1 105M 105M 0 100% /snap/core/17247
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
Sat Feb 28 18:15:44 SAST 2026 [elapsed=8 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
Sat Feb 28 18:15:44 SAST 2026 [elapsed=8 sec] Disabling mount tracking.
Sat Feb 28 18:15:45 SAST 2026 [elapsed=9 sec] SERVICES2
Sat Feb 28 18:15:45 SAST 2026 [elapsed=9 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Feb 28 18:15:49 SAST 2026 [elapsed=13 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= 930kB time=00:00:29.76 bitrate= 256.0kbits/s speed=1.41e+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
Sat Feb 28 18:18:42 SAST 2026 [elapsed=186 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: 61.90 -29.49, az/alt=324.65 +86.49 idle(e) IDLE
Sat Feb 28 18:19:41 SAST 2026 [elapsed=245 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Feb 28 18:20:02 SAST 2026 [elapsed=266 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=47.4 IDLE
Sat Feb 28 18:20:02 SAST 2026 [elapsed=266 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=+1745.00 DZDX=-891.00 DZDY=+3207.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Feb 28 18:20:02 SAST 2026 [elapsed=266 sec] WEATHER
status weather: W 15.2C 34% 55/59kph@318 DP14.6C/-22C/d IDLE
...OK
Sat Feb 28 18:20:03 SAST 2026 [elapsed=267 sec] MET
status...OK
met: c=N o=N Ro4d Co4d Ws0 Ho1d To60d Do1d wait W IDLE
Sat Feb 28 18:20:03 SAST 2026 [elapsed=267 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Feb 28 18:20:04 SAST 2026 [elapsed=268 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 90.83 -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 -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 7 0.1%
A 0.050s 103 1.1%
A 0.081s 383 4.2%
A 0.111s 719 7.9%
A 0.141s 1175 12.8%
A 0.172s 1763 19.3%
A 0.202s 2441 26.7%
A 0.233s 3233 35.3%
A 0.263s 4163 45.5%
A 0.293s 5086 55.6%
A 0.323s 5991 65.4%
A 0.354s 6780 74.1%
A 0.384s 7440 81.3%
A 0.414s 8000 87.4%
A 0.445s 8464 92.5%
A 0.475s 8791 96.0%
A 0.505s 9022 98.6%
A 0.536s 9152 100.0%
B 0.020s 1 0.0%
B 0.050s 88 1.0%
B 0.081s 374 4.1%
B 0.111s 713 7.8%
B 0.141s 1197 13.1%
B 0.172s 1757 19.2%
B 0.202s 2442 26.7%
B 0.232s 3231 35.3%
B 0.262s 4137 45.2%
B 0.292s 5074 55.4%
B 0.323s 5964 65.2%
B 0.353s 6751 73.7%
B 0.383s 7415 81.0%
B 0.413s 7994 87.3%
B 0.444s 8443 92.2%
B 0.474s 8787 96.0%
B 0.504s 9024 98.6%
B 0.534s 9142 99.9%
B 0.565s 9160 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.050s 9056 98.9%
A 0.081s 8760 95.7%
A 0.111s 8404 91.8%
A 0.141s 7951 86.9%
A 0.172s 7350 80.3%
A 0.202s 6669 72.9%
A 0.232s 5868 64.1%
A 0.263s 4953 54.1%
A 0.293s 3986 43.5%
A 0.323s 3138 34.3%
A 0.354s 2355 25.7%
A 0.384s 1668 18.2%
A 0.414s 1114 12.2%
A 0.445s 673 7.4%
A 0.475s 338 3.7%
A 0.505s 118 1.3%
A 0.536s 8 0.1%
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 0.171s 7359 80.4%
B 0.202s 6672 72.9%
B 0.232s 5869 64.1%
B 0.262s 4953 54.1%
B 0.292s 4023 43.9%
B 0.323s 3137 34.3%
B 0.353s 2361 25.8%
B 0.383s 1693 18.5%
B 0.414s 1125 12.3%
B 0.444s 684 7.5%
B 0.474s 345 3.8%
B 0.505s 122 1.3%
B 0.535s 11 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 0.536 seconds.
Shutter B opened to 100.0 percent in 0.565 seconds.
Shutter A closed to 0.1 percent in 0.536 seconds.
Shutter B closed to 0.0 percent in 0.565 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=9235 IDLE
Sat Feb 28 18:20:46 SAST 2026 [elapsed=310 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=47.4 IDLE
taking preflight exposures:
acam...OK
acam image:
124M Feb 28 18:21 /atlas/obs/03a/61100/03a61100e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Feb 28 18:21:09 SAST 2026 [elapsed=333 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (52 seconds old)
OTA humidity level...OK (4%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Feb 28 18:21:09 SAST 2026 [elapsed=333 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61099.68136101|info|galildriver|using focus model: foc=9187+(4.30)*17.9+(-0.40)*60.2=9239.9
61099.68136626|info|galildriver|o 2 IN | cass: 3050284 15.25 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54006552 9236 um b=8f M [focus]
61099.68137686|info|galildriver|o 2 IN | cass: 3050283 15.25 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54006632 9236 um b=2f [cmd]
bestfocus for o...OK
Sat Feb 28 18:21:11 SAST 2026 [elapsed=335 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Feb 28 18:21:41 SAST 2026 [elapsed=365 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
Sat Feb 28 18:21:42 SAST 2026 [elapsed=366 sec] NOTICES: det_dzdx=-891 is outside range +-250 from -558; det_dzdy=3207 is outside range +-250 from -1915;
Sat Feb 28 18:21:42 SAST 2026 [elapsed=366 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.
Sat Feb 28 18:21:42 SAST 2026 [elapsed=366 sec] Happy observing!
Sat Feb 28 18:21:42 SAST 2026 [elapsed=366 sec] Preflight took 366 seconds to complete.
Sat Feb 28 18:21:42 SAST 2026 [elapsed=366 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 110 1.2% A 0.081s 385 4.2% A 0.111s 717 7.8% A 0.141s 1181 12.9% A 0.171s 1762 19.2% A 0.202s 2441 26.7% A 0.232s 3238 35.4% A 0.262s 4144 45.3% A 0.292s 5078 55.5% A 0.323s 5963 65.1% A 0.353s 6757 73.8% A 0.383s 7412 81.0% A 0.413s 7992 87.3% A 0.443s 8445 92.3% A 0.473s 8767 95.8% A 0.504s 9018 98.5% A 0.534s 9135 99.8% A 0.564s 9151 100.0% B 0.020s 2 0.0% B 0.050s 120 1.3% B 0.081s 381 4.2% B 0.111s 742 8.1% B 0.141s 1218 13.3% B 0.171s 1774 19.4% B 0.202s 2467 26.9% B 0.232s 3268 35.7% B 0.262s 4167 45.5% B 0.292s 5103 55.7% B 0.323s 5988 65.4% B 0.353s 6773 74.0% B 0.383s 7438 81.3% B 0.413s 8001 87.4% B 0.443s 8455 92.4% B 0.474s 8795 96.1% B 0.504s 9023 98.6% B 0.534s 9138 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9150 100.0% A 0.050s 9046 98.8% A 0.081s 8774 95.8% A 0.111s 8422 92.0% A 0.141s 7959 86.9% A 0.171s 7399 80.8% A 0.201s 6712 73.3% A 0.232s 5924 64.7% A 0.262s 5007 54.7% A 0.292s 4067 44.4% A 0.322s 3195 34.9% A 0.352s 2404 26.3% A 0.383s 1737 19.0% A 0.413s 1162 12.7% A 0.443s 707 7.7% A 0.473s 369 4.0% A 0.504s 130 1.4% A 0.534s 17 0.2% A 0.564s 4 0.0% B 0.020s 9145 99.9% B 0.050s 9025 98.6% B 0.081s 8780 95.9% B 0.111s 8434 92.1% B 0.141s 7969 87.1% B 0.171s 7399 80.8% B 0.202s 6713 73.3% B 0.232s 5921 64.7% B 0.262s 5009 54.7% B 0.292s 4082 44.6% B 0.323s 3192 34.9% B 0.353s 2415 26.4% B 0.383s 1727 18.9% B 0.414s 1161 12.7% B 0.444s 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 1 0.0mm 15 N F R