STH Recent Preflight: 61093
Executing preflight for 61093 at Sat Feb 21 18:23:36 SAST 2026.
Log can be found in /atlas/obs/03/61093/preflight.dat.
Setting donefile '/atlas/obs/03/61093/preflight_complete.20260221162336.25684' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260221162336.25684.
Sat Feb 21 18:23:36 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Feb 21 18:23:36 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [10acd5c9-f70f-4cdb-9ab5-9fafbfc7f23d;1800]
Sat Feb 21 18:23:36 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Feb 21 18:23:37 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Feb 21 18:23:37 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat Feb 21 18:23:37 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Feb 21 18:23:37 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1771691011
OK
Sat Feb 21 18:23:37 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Feb 21 18:23:37 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 21 18:23:39 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 21 18:23:39 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Feb 21 18:23:39 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sat Feb 21 16:23:39 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 40 1024 377 1.048 0.012 0.070
*metbox2.sth.atl .PPS. 1 u 561 1024 377 0.279 -0.032 0.023
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.8 2 u 509 1024 377 23.312 0.481 0.611
-ntp.as3741.net 146.64.8.7 2 u 27 1024 377 22.789 -0.157 0.065
+ntp2.as3741.net 155.232.19.6 2 u 584 1024 377 7.340 -0.042 0.053
-ntp2.inx.net.za 183.3.52.101 2 u 839 1024 377 7.353 -0.032 0.040
-102.222.100.153 196.21.187.2 2 u 110 1024 377 7.856 0.069 0.374
-ntp5.inx.net.za 183.3.52.101 2 u 986 1024 377 7.965 -0.013 0.101
-flipping.cloudh 80.72.67.48 3 u 1032 1024 377 8.316 -0.024 0.045
102.216.37.99 ( 210.182.58.253 2 u 19d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 986 1024 377 22.749 -0.100 0.045
Sat Feb 21 18:23:43 SAST 2026 [elapsed=7 sec] DISKS
200GB available in /atlas/obs...OK (6091GB)
200GB available in /atlas/red...OK (8817GB)
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 44% /
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 5.0T 8.5T 38% /
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 21 18:23:43 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
Sat Feb 21 18:23:43 SAST 2026 [elapsed=7 sec] Disabling mount tracking.
Sat Feb 21 18:23:43 SAST 2026 [elapsed=7 sec] SERVICES2
Sat Feb 21 18:23:43 SAST 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Feb 21 18:23:47 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= 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/OPEN (0%) IDLE
Sat Feb 21 18:26:22 SAST 2026 [elapsed=166 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: 56.92 -29.49, az/alt=324.65 +86.49 idle(e) IDLE
Sat Feb 21 18:27:21 SAST 2026 [elapsed=225 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Feb 21 18:27:42 SAST 2026 [elapsed=246 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.2 IDLE
Sat Feb 21 18:27:42 SAST 2026 [elapsed=246 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (4 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-53.7C)
Checking CCD plane: Z0=+1793.00 DZDX=-908.00 DZDY=+4331.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Feb 21 18:27:42 SAST 2026 [elapsed=246 sec] WEATHER
status weather: C+ 24.0C 41% 17/20kph@295 DP5.2C/-370C/d IDLE
...OK
Sat Feb 21 18:27:43 SAST 2026 [elapsed=247 sec] MET
status...OK
met: c=Y o=N Ro3d Cx5 Wo7d Ho1d To53d Do1d wait C IDLE
Sat Feb 21 18:27:43 SAST 2026 [elapsed=247 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Feb 21 18:27:43 SAST 2026 [elapsed=247 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 85.85 -14.63, az/alt=59.89 +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 2 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 11 0.1%
A 0.051s 111 1.2%
A 0.081s 403 4.4%
A 0.112s 746 8.1%
A 0.142s 1208 13.2%
A 0.172s 1806 19.7%
A 0.203s 2488 27.2%
A 0.233s 3288 35.9%
A 0.264s 4227 46.2%
A 0.294s 5171 56.5%
A 0.324s 6042 66.0%
A 0.355s 6831 74.6%
A 0.385s 7479 81.7%
A 0.415s 8032 87.7%
A 0.446s 8491 92.8%
A 0.476s 8809 96.2%
A 0.506s 9032 98.7%
A 0.537s 9153 100.0%
B 0.020s 1 0.0%
B 0.051s 93 1.0%
B 0.081s 385 4.2%
B 0.111s 728 8.0%
B 0.142s 1201 13.1%
B 0.172s 1779 19.4%
B 0.202s 2465 26.9%
B 0.233s 3259 35.6%
B 0.263s 4200 45.9%
B 0.293s 5130 56.0%
B 0.324s 6021 65.8%
B 0.354s 6796 74.2%
B 0.384s 7453 81.4%
B 0.415s 8030 87.7%
B 0.445s 8465 92.5%
B 0.476s 8805 96.2%
B 0.506s 9034 98.7%
B 0.536s 9144 99.9%
B 0.567s 9158 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9063 99.0%
A 0.081s 8769 95.8%
A 0.111s 8413 91.9%
A 0.142s 7952 86.9%
A 0.172s 7350 80.3%
A 0.202s 6669 72.9%
A 0.233s 5870 64.1%
A 0.263s 4955 54.1%
A 0.293s 4013 43.8%
A 0.324s 3135 34.2%
A 0.354s 2355 25.7%
A 0.384s 1690 18.5%
A 0.415s 1131 12.4%
A 0.445s 687 7.5%
A 0.476s 349 3.8%
A 0.506s 125 1.4%
A 0.536s 9 0.1%
B 0.020s 9147 99.9%
B 0.051s 9041 98.8%
B 0.081s 8779 95.9%
B 0.111s 8423 92.0%
B 0.142s 7956 86.9%
B 0.172s 7380 80.6%
B 0.202s 6705 73.2%
B 0.233s 5897 64.4%
B 0.263s 4978 54.4%
B 0.293s 4062 44.4%
B 0.324s 3156 34.5%
B 0.354s 2385 26.1%
B 0.385s 1719 18.8%
B 0.415s 1121 12.2%
B 0.446s 682 7.5%
B 0.476s 349 3.8%
B 0.506s 123 1.3%
B 0.537s 9 0.1%
A 1 0.0mm 15 N F R | B -7 -0.2mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.537 seconds.
Shutter B opened to 100.0 percent in 0.567 seconds.
Shutter A closed to 0.1 percent in 0.536 seconds.
Shutter B closed to 0.1 percent in 0.537 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 236kB time=00:00:07.55 bitrate= 256.1kbits/s speed=1.06e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=c[1] foc=9262 IDLE
Sat Feb 21 18:28:31 SAST 2026 [elapsed=295 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.2 IDLE
taking preflight exposures:
acam...OK
acam image:
121M Feb 21 18:28 /atlas/obs/03a/61093/03a61093e0001c.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Feb 21 18:28:53 SAST 2026 [elapsed=317 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (66 seconds old)
OTA humidity level...OK (4%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Feb 21 18:28:53 SAST 2026 [elapsed=317 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61092.68673700|info|galildriver|using focus model: foc=9187+(4.30)*23.8+(-0.40)*60.2=9265.2
61092.68674226|info|galildriver|c 1 IN | cass: 14944 0.07 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54011804 9262 um b=8f M [focus]
61092.68675287|info|galildriver|c 1 IN | cass: 14946 0.07 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54011870 9262 um b=2f [cmd]
bestfocus for c...OK
Sat Feb 21 18:28:56 SAST 2026 [elapsed=320 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Feb 21 18:29:26 SAST 2026 [elapsed=350 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 21 18:29:27 SAST 2026 [elapsed=351 sec] NOTICES: det_dzdx=-908 is outside range +-250 from -558; det_dzdy=4331 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Sat Feb 21 18:29:27 SAST 2026 [elapsed=351 sec] Happy observing!
Sat Feb 21 18:29:27 SAST 2026 [elapsed=351 sec] Preflight took 351 seconds to complete.
Sat Feb 21 18:29:27 SAST 2026 [elapsed=351 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 4 0.0% A 0.050s 117 1.3% A 0.081s 383 4.2% A 0.111s 730 8.0% A 0.141s 1199 13.1% A 0.171s 1779 19.4% A 0.202s 2465 26.9% A 0.232s 3265 35.7% A 0.262s 4174 45.6% A 0.292s 5106 55.8% A 0.322s 5991 65.4% A 0.353s 6779 74.1% A 0.383s 7431 81.2% A 0.413s 7991 87.3% A 0.443s 8446 92.3% A 0.473s 8779 95.9% A 0.504s 9023 98.6% A 0.534s 9137 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.050s 111 1.2% B 0.081s 379 4.1% B 0.111s 713 7.8% B 0.141s 1185 12.9% B 0.171s 1751 19.1% B 0.201s 2442 26.7% B 0.232s 3240 35.4% B 0.262s 4137 45.2% B 0.292s 5073 55.4% B 0.322s 5960 65.1% B 0.352s 6748 73.7% B 0.383s 7420 81.1% B 0.413s 7986 87.2% B 0.443s 8444 92.2% B 0.473s 8786 96.0% B 0.503s 9012 98.4% B 0.534s 9133 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9153 100.0% A 0.050s 9049 98.9% A 0.081s 8781 95.9% A 0.111s 8427 92.1% A 0.141s 7963 87.0% A 0.171s 7383 80.7% A 0.202s 6691 73.1% A 0.232s 5901 64.5% A 0.262s 4980 54.4% A 0.292s 4042 44.2% A 0.323s 3170 34.6% A 0.353s 2382 26.0% A 0.383s 1715 18.7% A 0.414s 1146 12.5% A 0.444s 693 7.6% A 0.474s 360 3.9% A 0.504s 125 1.4% A 0.535s 15 0.2% A 0.565s 3 0.0% B 0.020s 9143 99.9% B 0.050s 9015 98.5% B 0.081s 8770 95.8% B 0.111s 8420 92.0% B 0.141s 7951 86.9% B 0.171s 7378 80.6% B 0.201s 6686 73.0% B 0.232s 5891 64.4% B 0.262s 4981 54.4% B 0.292s 4053 44.3% B 0.322s 3163 34.6% B 0.353s 2390 26.1% B 0.383s 1703 18.6% B 0.413s 1148 12.5% B 0.443s 699 7.6% B 0.474s 356 3.9% B 0.504s 132 1.4% B 0.534s 14 0.2% B 0.564s 1 0.0% A -1 -0.0mm 15 N F R | B 1 0.0mm 15 N F R