STH Recent Preflight: 61156
Executing preflight for 61156 at Sat Apr 25 17:06:43 SAST 2026.
Log can be found in /atlas/obs/03/61156/preflight.dat.
Setting donefile '/atlas/obs/03/61156/preflight_complete.20260425150643.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260425150643.11042.
Sat Apr 25 17:06:43 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Apr 25 17:06:43 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [56b817b2-470b-4f90-b89f-68cdbdf2d3e7;1800]
Sat Apr 25 17:06:43 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Apr 25 17:06:44 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Apr 25 17:06:44 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat Apr 25 17:06:44 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Apr 25 17:06:44 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1777129597
OK
Sat Apr 25 17:06:44 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Apr 25 17:06:44 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 Apr 25 17:06:45 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
Sat Apr 25 17:06:46 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Apr 25 17:06:46 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sat Apr 25 15:06:46 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 496 1024 377 1.034 0.027 0.377
+metbox2.sth.atl .PPS. 1 u 351 1024 377 0.289 0.017 0.087
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 414 1024 377 23.354 0.418 0.338
-ntp.as3741.net 146.64.58.41 2 u 345 1024 377 23.654 0.319 0.251
+ntp2.as3741.net 155.232.19.7 2 u 828 1024 377 7.309 0.031 0.065
+ntp2.inx.net.za 210.182.58.253 2 u 268 1024 377 7.261 0.069 0.068
-102.222.100.153 155.232.19.6 2 u 49 1024 377 7.820 -1.193 0.478
-ntp5.inx.net.za 183.3.52.101 2 u 30 1024 377 7.865 0.133 0.222
-flipping.cloudh 80.72.67.48 3 u 457 1024 377 8.170 0.221 0.093
102.216.37.99 ( 210.182.58.253 2 u 82d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 308 1024 377 22.758 -0.567 1.498
Sat Apr 25 17:07:02 SAST 2026 [elapsed=19 sec] DISKS
200GB available in /atlas/obs...OK (6210GB)
200GB available in /atlas/red...OK (9142GB)
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 4.7T 8.8T 35% /
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
Sat Apr 25 17:07:02 SAST 2026 [elapsed=19 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 Apr 25 17:07:02 SAST 2026 [elapsed=19 sec] Disabling mount tracking.
Sat Apr 25 17:07:03 SAST 2026 [elapsed=19 sec] SERVICES2
Sat Apr 25 17:07:03 SAST 2026 [elapsed=20 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Apr 25 17:07:08 SAST 2026 [elapsed=25 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= 914kB time=00:00:29.24 bitrate= 256.0kbits/s speed=1.48e+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 Apr 25 17:10:23 SAST 2026 [elapsed=220 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: 99.97 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sat Apr 25 17:11:22 SAST 2026 [elapsed=279 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.8 IDLE
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (9 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=-892.00 DZDY=+2860.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] WEATHER
status weather: C 16.2C 67% 30/45kph@313 DP7.1C/44C/d IDLE
...OK
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] MET
status...OK
met: c=N o=N Ro4h Cs0 Wo5d Ho2h To28d Do8d wait C IDLE
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Apr 25 17:11:44 SAST 2026 [elapsed=301 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 128.90 -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 3 0.0%
B 0.020s -1 0.0%
A 2 0.1mm 15 N F R | B -1 -0.0mm 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 109 1.2%
A 0.081s 392 4.3%
A 0.111s 733 8.0%
A 0.141s 1191 13.0%
A 0.172s 1782 19.5%
A 0.202s 2465 26.9%
A 0.232s 3257 35.6%
A 0.263s 4163 45.5%
A 0.293s 5115 55.9%
A 0.323s 5990 65.4%
A 0.354s 6780 74.1%
A 0.384s 7440 81.3%
A 0.414s 7998 87.4%
A 0.444s 8467 92.5%
A 0.475s 8793 96.1%
A 0.505s 9020 98.5%
A 0.535s 9152 100.0%
B 0.020s 1 0.0%
B 0.050s 99 1.1%
B 0.081s 384 4.2%
B 0.111s 715 7.8%
B 0.141s 1198 13.1%
B 0.172s 1777 19.4%
B 0.202s 2465 26.9%
B 0.232s 3258 35.6%
B 0.263s 4167 45.5%
B 0.293s 5102 55.7%
B 0.323s 5992 65.5%
B 0.353s 6774 74.0%
B 0.384s 7436 81.2%
B 0.414s 8010 87.5%
B 0.444s 8454 92.4%
B 0.474s 8796 96.1%
B 0.505s 9023 98.6%
B 0.535s 9141 99.9%
B 0.565s 9159 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.050s 9069 99.1%
A 0.081s 8772 95.8%
A 0.111s 8414 91.9%
A 0.141s 7967 87.0%
A 0.171s 7374 80.6%
A 0.202s 6717 73.4%
A 0.232s 5923 64.7%
A 0.262s 5014 54.8%
A 0.292s 4073 44.5%
A 0.323s 3193 34.9%
A 0.353s 2401 26.2%
A 0.383s 1728 18.9%
A 0.414s 1163 12.7%
A 0.444s 712 7.8%
A 0.474s 364 4.0%
A 0.504s 135 1.5%
A 0.535s 14 0.2%
A 0.565s -7 0.0%
B 0.020s 9146 99.9%
B 0.050s 9039 98.7%
B 0.081s 8770 95.8%
B 0.111s 8425 92.0%
B 0.141s 7956 86.9%
B 0.171s 7379 80.6%
B 0.202s 6695 73.1%
B 0.232s 5896 64.4%
B 0.262s 4986 54.5%
B 0.293s 4050 44.2%
B 0.323s 3164 34.6%
B 0.353s 2384 26.0%
B 0.383s 1714 18.7%
B 0.414s 1141 12.5%
B 0.444s 697 7.6%
B 0.474s 356 3.9%
B 0.505s 127 1.4%
B 0.535s 13 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 0.535 seconds.
Shutter B opened to 100.0 percent in 0.565 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= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.12e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9233 IDLE
Sat Apr 25 17:12:29 SAST 2026 [elapsed=346 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.8 IDLE
taking preflight exposures:
acam...OK
acam image:
125M Apr 25 17:12 /atlas/obs/03a/61156/03a61156e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Apr 25 17:12:52 SAST 2026 [elapsed=369 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (5 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Apr 25 17:12:52 SAST 2026 [elapsed=369 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61155.63394335|info|galildriver|using focus model: foc=9187+(4.30)*17.3+(-0.40)*60.2=9237.3
61155.63394859|info|galildriver|o 2 IN | cass: 3048358 15.24 mm b=23 move=NO | arm: 408783 475.89 mm b=03 move=OK | foc: 54006109 9234 um b=8f M [focus]
61155.63395920|info|galildriver|o 2 IN | cass: 3048360 15.24 mm b=23 move=NO | arm: 408783 475.89 mm b=03 move=OK | foc: 54006177 9234 um b=2f [cmd]
bestfocus for o...OK
Sat Apr 25 17:12:54 SAST 2026 [elapsed=371 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Apr 25 17:13:25 SAST 2026 [elapsed=402 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 Apr 25 17:13:27 SAST 2026 [elapsed=404 sec] NOTICES: det_dzdx=-892 is outside range +-250 from -558; det_dzdy=2860 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 Apr 25 17:13:27 SAST 2026 [elapsed=404 sec] Happy observing!
Sat Apr 25 17:13:27 SAST 2026 [elapsed=404 sec] Preflight took 404 seconds to complete.
Sat Apr 25 17:13:27 SAST 2026 [elapsed=404 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 0.081s 385 4.2% A 0.111s 736 8.0% A 0.141s 1196 13.1% A 0.172s 1782 19.5% A 0.202s 2467 26.9% A 0.232s 3265 35.7% A 0.262s 4174 45.6% A 0.293s 5104 55.8% A 0.323s 5996 65.5% A 0.353s 6775 74.0% A 0.383s 7434 81.2% A 0.414s 8005 87.4% A 0.444s 8456 92.4% A 0.474s 8792 96.0% A 0.505s 9027 98.6% A 0.535s 9138 99.8% A 0.565s 9154 100.0% B 0.020s 2 0.0% B 0.051s 119 1.3% B 0.081s 387 4.2% B 0.112s 744 8.1% B 0.142s 1220 13.3% B 0.172s 1795 19.6% B 0.203s 2492 27.2% B 0.233s 3294 36.0% B 0.263s 4198 45.9% B 0.293s 5133 56.1% B 0.324s 6017 65.7% B 0.354s 6795 74.2% B 0.384s 7458 81.5% B 0.415s 8018 87.6% B 0.445s 8468 92.5% B 0.475s 8804 96.2% B 0.505s 9028 98.6% B 0.536s 9141 99.9% B 0.566s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.051s 9050 98.9% A 0.081s 8767 95.8% A 0.112s 8407 91.8% A 0.142s 7941 86.7% A 0.173s 7360 80.4% A 0.203s 6667 72.8% A 0.233s 5867 64.1% A 0.263s 4951 54.1% A 0.294s 4009 43.8% A 0.324s 3138 34.3% A 0.355s 2340 25.6% A 0.385s 1670 18.2% A 0.415s 1114 12.2% A 0.446s 668 7.3% A 0.476s 340 3.7% A 0.507s 114 1.2% A 0.537s 11 0.1% A 0.568s 2 0.0% B 0.020s 9143 99.9% B 0.050s 9011 98.4% B 0.081s 8763 95.7% B 0.111s 8409 91.9% B 0.142s 7934 86.7% B 0.172s 7336 80.1% B 0.203s 6642 72.6% B 0.233s 5837 63.8% B 0.264s 4920 53.7% B 0.294s 3963 43.3% B 0.324s 3084 33.7% B 0.355s 2323 25.4% B 0.386s 1643 17.9% B 0.416s 1100 12.0% B 0.447s 648 7.1% B 0.477s 322 3.5% B 0.508s 110 1.2% B 0.538s 8 0.1% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R