STH Recent Preflight: 61159
Executing preflight for 61159 at Tue Apr 28 17:03:45 SAST 2026.
Log can be found in /atlas/obs/03/61159/preflight.dat.
Setting donefile '/atlas/obs/03/61159/preflight_complete.20260428150345.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260428150345.11042.
Tue Apr 28 17:03:45 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Tue Apr 28 17:03:45 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [43170e69-a075-47c2-b16f-0442ced33b26;1800]
Tue Apr 28 17:03:45 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Tue Apr 28 17:03:46 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Tue Apr 28 17:03:46 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Tue Apr 28 17:03:46 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Tue Apr 28 17:03:46 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1777388617
OK
Tue Apr 28 17:03:46 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Tue Apr 28 17:03:46 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 Apr 28 17:03:47 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 Apr 28 17:03:48 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Tue Apr 28 17:03:48 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Tue Apr 28 15:03:48 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 37m 1024 374 0.991 0.022 0.021
*metbox2.sth.atl .PPS. 1 u 503 1024 377 0.305 -0.064 0.060
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.6 2 u 22 1024 377 23.311 0.004 0.152
+ntp.as3741.net 146.64.58.41 2 u 398 1024 377 22.824 -0.024 0.237
-ntp2.as3741.net 155.232.19.7 2 u 346 1024 377 7.251 0.071 0.194
-ntp2.inx.net.za 183.3.52.101 2 u 381 1024 377 7.296 0.020 0.067
-102.222.100.153 155.232.19.6 2 u 33 1024 377 7.916 1.212 0.257
-ntp5.inx.net.za 196.21.187.2 2 u 503 1024 377 7.924 0.122 0.040
-flipping.cloudh 80.72.67.48 3 u 41 1024 377 8.041 0.613 0.415
102.216.37.99 ( 210.182.58.253 2 u 85d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 28 1024 377 22.734 0.609 0.169
Tue Apr 28 17:04:00 SAST 2026 [elapsed=15 sec] DISKS
200GB available in /atlas/obs...OK (6140GB)
200GB available in /atlas/red...OK (9196GB)
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/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 4.6T 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
Tue Apr 28 17:04:00 SAST 2026 [elapsed=15 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 Apr 28 17:04:00 SAST 2026 [elapsed=15 sec] Disabling mount tracking.
Tue Apr 28 17:04:00 SAST 2026 [elapsed=15 sec] SERVICES2
Tue Apr 28 17:04:00 SAST 2026 [elapsed=15 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Tue Apr 28 17:04:05 SAST 2026 [elapsed=20 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=1.51e+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 Apr 28 17:07:22 SAST 2026 [elapsed=217 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: 102.17 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Tue Apr 28 17:08:20 SAST 2026 [elapsed=275 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Tue Apr 28 17:08:41 SAST 2026 [elapsed=296 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Tue Apr 28 17:08:41 SAST 2026 [elapsed=296 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (3 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-55.3C)
Checking CCD plane: Z0=+1669.00 DZDX=-888.00 DZDY=+1443.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Tue Apr 28 17:08:41 SAST 2026 [elapsed=296 sec] WEATHER
status weather: clear 6.8C 52% 8/16kph@197 DP9.1C/-18C/d IDLE
...OK
Tue Apr 28 17:08:42 SAST 2026 [elapsed=297 sec] MET
status...OK
met: c=N o=Y Ro1d Co5h Wo1d Ho5h To31d Do2d IDLE
Tue Apr 28 17:08:42 SAST 2026 [elapsed=297 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Tue Apr 28 17:08:42 SAST 2026 [elapsed=297 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 131.09 -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 8 0.1%
A 0.051s 107 1.2%
A 0.081s 389 4.2%
A 0.111s 731 8.0%
A 0.141s 1189 13.0%
A 0.172s 1781 19.5%
A 0.202s 2466 26.9%
A 0.232s 3258 35.6%
A 0.262s 4163 45.5%
A 0.293s 5115 55.9%
A 0.323s 5991 65.4%
A 0.353s 6781 74.1%
A 0.383s 7438 81.3%
A 0.414s 8002 87.4%
A 0.444s 8467 92.5%
A 0.474s 8784 96.0%
A 0.505s 9023 98.6%
A 0.535s 9154 100.0%
B 0.020s 2 0.0%
B 0.051s 105 1.1%
B 0.081s 390 4.3%
B 0.111s 740 8.1%
B 0.142s 1230 13.4%
B 0.172s 1817 19.8%
B 0.202s 2513 27.5%
B 0.232s 3311 36.2%
B 0.263s 4228 46.2%
B 0.293s 5162 56.4%
B 0.323s 6019 65.8%
B 0.354s 6798 74.3%
B 0.384s 7455 81.4%
B 0.414s 8028 87.7%
B 0.444s 8468 92.5%
B 0.474s 8807 96.2%
B 0.505s 9037 98.7%
B 0.535s 9148 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.050s 9065 99.0%
A 0.081s 8764 95.7%
A 0.111s 8415 91.9%
A 0.141s 7967 87.0%
A 0.171s 7375 80.6%
A 0.202s 6694 73.1%
A 0.232s 5895 64.4%
A 0.262s 4953 54.1%
A 0.293s 4045 44.2%
A 0.323s 3166 34.6%
A 0.353s 2352 25.7%
A 0.384s 1688 18.4%
A 0.414s 1129 12.3%
A 0.444s 685 7.5%
A 0.474s 346 3.8%
A 0.505s 123 1.3%
A 0.535s 10 0.1%
A 0.565s -9 0.0%
B 0.020s 9146 99.9%
B 0.050s 9042 98.8%
B 0.081s 8784 96.0%
B 0.111s 8438 92.2%
B 0.141s 7976 87.1%
B 0.171s 7400 80.8%
B 0.201s 6719 73.4%
B 0.232s 5923 64.7%
B 0.262s 5016 54.8%
B 0.292s 4078 44.5%
B 0.322s 3191 34.9%
B 0.353s 2407 26.3%
B 0.383s 1733 18.9%
B 0.413s 1173 12.8%
B 0.443s 709 7.7%
B 0.474s 364 4.0%
B 0.504s 139 1.5%
B 0.534s 13 0.1%
B 0.564s -6 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 0.535 seconds.
Shutter A closed to 0.0 percent in 0.565 seconds.
Shutter B closed to 0.0 percent in 0.564 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.09e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9209 IDLE
Tue Apr 28 17:09:33 SAST 2026 [elapsed=348 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 28 17:09 /atlas/obs/03a/61159/03a61159e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Tue Apr 28 17:09:55 SAST 2026 [elapsed=370 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (8 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Tue Apr 28 17:09:55 SAST 2026 [elapsed=370 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61158.63190083|info|galildriver|using focus model: foc=9187+(4.30)*11.8+(-0.40)*60.2=9213.6
61158.63190607|info|galildriver|o 2 IN | cass: 3050090 15.25 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54001335 9210 um b=8f M [focus]
61158.63191667|info|galildriver|o 2 IN | cass: 3050091 15.25 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54001400 9210 um b=2f [cmd]
bestfocus for o...OK
Tue Apr 28 17:09:58 SAST 2026 [elapsed=373 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Tue Apr 28 17:10:28 SAST 2026 [elapsed=403 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 Apr 28 17:10:30 SAST 2026 [elapsed=405 sec] NOTICES: det_dzdx=-888 is outside range +-250 from -558; det_dzdy=1443 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 Apr 28 17:10:30 SAST 2026 [elapsed=405 sec] Happy observing!
Tue Apr 28 17:10:30 SAST 2026 [elapsed=405 sec] Preflight took 405 seconds to complete.
Tue Apr 28 17:10:30 SAST 2026 [elapsed=405 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 722 7.9% A 0.141s 1180 12.9% A 0.171s 1761 19.2% A 0.201s 2442 26.7% A 0.232s 3238 35.4% A 0.262s 4144 45.3% A 0.292s 5074 55.4% A 0.323s 5969 65.2% A 0.353s 6753 73.8% A 0.383s 7413 81.0% A 0.413s 7988 87.3% A 0.443s 8445 92.3% A 0.474s 8783 95.9% A 0.504s 9022 98.6% A 0.534s 9136 99.8% A 0.564s 9153 100.0% B 0.020s 1 0.0% B 0.050s 117 1.3% B 0.081s 388 4.2% B 0.111s 741 8.1% B 0.141s 1219 13.3% B 0.171s 1794 19.6% B 0.202s 2490 27.2% B 0.232s 3293 36.0% B 0.262s 4198 45.9% B 0.293s 5134 56.1% B 0.323s 6015 65.7% B 0.353s 6793 74.2% B 0.383s 7461 81.5% B 0.414s 8017 87.6% B 0.444s 8469 92.5% B 0.474s 8805 96.2% B 0.504s 9028 98.6% B 0.534s 9140 99.8% B 0.565s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9150 100.0% A 0.051s 9044 98.8% A 0.081s 8767 95.8% A 0.111s 8408 91.9% A 0.141s 7942 86.8% A 0.171s 7359 80.4% A 0.202s 6691 73.1% A 0.232s 5894 64.4% A 0.262s 4982 54.4% A 0.292s 4039 44.1% A 0.323s 3165 34.6% A 0.353s 2387 26.1% A 0.383s 1710 18.7% A 0.413s 1147 12.5% A 0.444s 694 7.6% A 0.474s 358 3.9% A 0.504s 125 1.4% A 0.535s 14 0.2% A 0.565s 2 0.0% B 0.020s 9144 99.9% B 0.050s 9012 98.4% B 0.081s 8762 95.7% B 0.111s 8407 91.8% B 0.141s 7934 86.7% B 0.172s 7356 80.4% B 0.202s 6665 72.8% B 0.232s 5866 64.1% B 0.262s 4951 54.1% B 0.292s 4052 44.3% B 0.323s 3162 34.5% B 0.353s 2392 26.1% B 0.383s 1705 18.6% B 0.413s 1147 12.5% B 0.444s 700 7.6% B 0.474s 357 3.9% B 0.504s 132 1.4% B 0.534s 14 0.2% B 0.565s 1 0.0% A -1 -0.0mm 15 N F R | B 1 0.0mm 15 N F R