STH Recent Preflight: 61161
Executing preflight for 61161 at Thu Apr 30 17:01:55 SAST 2026.
Log can be found in /atlas/obs/03/61161/preflight.dat.
Setting donefile '/atlas/obs/03/61161/preflight_complete.20260430150155.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260430150155.11042.
Thu Apr 30 17:01:56 SAST 2026 [elapsed=1 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Thu Apr 30 17:01:56 SAST 2026 [elapsed=1 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [0e0ab0f0-a5ce-4e8a-ba6f-c32648111403;1800]
Thu Apr 30 17:01:56 SAST 2026 [elapsed=1 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 sec] auxcam is disabled.
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 sec] Skipping auxcam.
error: unknown module: vent
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1777561311
OK
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 sec] OPSEC
AUTO mode: ...OK
Thu Apr 30 17:01:57 SAST 2026 [elapsed=2 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
Thu Apr 30 17:01:58 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
Thu Apr 30 17:01:59 SAST 2026 [elapsed=4 sec] QUEUE
0 observations queued.
Thu Apr 30 17:01:59 SAST 2026 [elapsed=4 sec] CLOCKS
admin: Thu Apr 30 15:01:59 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 346 1024 377 1.059 0.083 0.160
+metbox2.sth.atl .PPS. 1 u 231 1024 377 0.301 0.148 0.088
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 196.21.187.2 2 u 1032 1024 377 24.319 -0.135 0.267
+ntp.as3741.net 146.64.58.41 2 u 30 1024 377 22.794 0.088 0.422
+ntp2.as3741.net 155.232.19.7 2 u 105 1024 377 7.204 0.012 0.199
-ntp2.inx.net.za 183.3.52.101 2 u 951 1024 377 7.286 0.238 0.118
102.222.100.153 196.21.187.2 2 u 26h 1024 0 7.937 0.836 0.000
-ntp5.inx.net.za 196.21.187.2 2 u 479 1024 377 7.926 0.207 0.174
-flipping.cloudh 80.72.67.48 3 u 529 1024 377 8.142 0.577 0.186
102.216.37.99 ( 210.182.58.253 2 u 87d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 729 1024 377 22.793 -0.413 1.042
Thu Apr 30 17:02:01 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (6203GB)
200GB available in /atlas/red...OK (9320GB)
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 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 4.5T 8.9T 34% /
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
Thu Apr 30 17:02:01 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
Thu Apr 30 17:02:01 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Thu Apr 30 17:02:01 SAST 2026 [elapsed=6 sec] SERVICES2
Thu Apr 30 17:02:01 SAST 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Thu Apr 30 17:02:06 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= 922kB time=00:00:29.50 bitrate= 256.0kbits/s speed=1.43e+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
Thu Apr 30 17:05:22 SAST 2026 [elapsed=207 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: 103.64 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Thu Apr 30 17:06:21 SAST 2026 [elapsed=266 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Thu Apr 30 17:06:43 SAST 2026 [elapsed=288 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.2 IDLE
Thu Apr 30 17:06:43 SAST 2026 [elapsed=288 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (5 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.9C)
Checking CCD plane: Z0=+1705.00 DZDX=-888.00 DZDY=+2264.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Thu Apr 30 17:06:43 SAST 2026 [elapsed=288 sec] WEATHER
status weather: C 11.9C 67% 13/18kph@308 DP4.1C/-69C/d IDLE
...OK
Thu Apr 30 17:06:44 SAST 2026 [elapsed=289 sec] MET
status...OK
met: c=N o=Y Ro3d Co37 Wo3d Ho2h To33d Do8h IDLE
Thu Apr 30 17:06:44 SAST 2026 [elapsed=289 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Thu Apr 30 17:06:44 SAST 2026 [elapsed=289 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 132.57 -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 -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 9 0.1%
A 0.050s 108 1.2%
A 0.081s 401 4.4%
A 0.111s 746 8.1%
A 0.141s 1207 13.2%
A 0.172s 1801 19.7%
A 0.202s 2490 27.2%
A 0.232s 3287 35.9%
A 0.262s 4163 45.5%
A 0.292s 5115 55.9%
A 0.323s 5991 65.4%
A 0.353s 6781 74.1%
A 0.383s 7439 81.3%
A 0.414s 7999 87.4%
A 0.444s 8467 92.5%
A 0.474s 8792 96.0%
A 0.504s 9021 98.5%
A 0.535s 9153 100.0%
B 0.020s 2 0.0%
B 0.050s 98 1.1%
B 0.081s 384 4.2%
B 0.111s 728 8.0%
B 0.141s 1198 13.1%
B 0.172s 1778 19.4%
B 0.202s 2465 26.9%
B 0.232s 3259 35.6%
B 0.263s 4167 45.5%
B 0.293s 5104 55.8%
B 0.323s 5992 65.5%
B 0.353s 6776 74.0%
B 0.384s 7435 81.2%
B 0.414s 8011 87.5%
B 0.444s 8455 92.4%
B 0.474s 8798 96.1%
B 0.505s 9030 98.6%
B 0.535s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.050s 9057 98.9%
A 0.081s 8762 95.7%
A 0.111s 8402 91.8%
A 0.141s 7951 86.9%
A 0.171s 7353 80.3%
A 0.202s 6670 72.9%
A 0.232s 5867 64.1%
A 0.262s 4953 54.1%
A 0.292s 4016 43.9%
A 0.323s 3138 34.3%
A 0.353s 2354 25.7%
A 0.383s 1687 18.4%
A 0.414s 1130 12.3%
A 0.444s 686 7.5%
A 0.474s 344 3.8%
A 0.505s 123 1.3%
A 0.535s 10 0.1%
A 0.565s -7 0.0%
B 0.020s 9146 99.9%
B 0.051s 9034 98.7%
B 0.081s 8772 95.8%
B 0.111s 8425 92.0%
B 0.141s 7957 86.9%
B 0.172s 7380 80.6%
B 0.202s 6695 73.1%
B 0.232s 5896 64.4%
B 0.263s 4985 54.5%
B 0.293s 4050 44.2%
B 0.323s 3164 34.6%
B 0.354s 2383 26.0%
B 0.384s 1714 18.7%
B 0.414s 1141 12.5%
B 0.444s 696 7.6%
B 0.475s 356 3.9%
B 0.505s 126 1.4%
B 0.535s 13 0.1%
B 0.565s -3 0.0%
A 1 0.0mm 15 N F R | B -3 -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= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.07e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9223 IDLE
Thu Apr 30 17:07:33 SAST 2026 [elapsed=338 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=39.2 IDLE
taking preflight exposures:
acam...OK
acam image:
124M Apr 30 17:07 /atlas/obs/03a/61161/03a61161e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Thu Apr 30 17:07:56 SAST 2026 [elapsed=361 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (69 seconds old)
OTA humidity level...OK (5%)
Dome humidity exists...OK
Dome humidity is current... OK
Thu Apr 30 17:07:56 SAST 2026 [elapsed=361 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61160.63051812|info|galildriver|using focus model: foc=9187+(4.30)*15.0+(-0.40)*60.2=9227.4
61160.63052336|info|galildriver|o 2 IN | cass: 3048245 15.24 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54004116 9224 um b=8f M [focus]
61160.63053396|info|galildriver|o 2 IN | cass: 3048241 15.24 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54004207 9224 um b=2f [cmd]
bestfocus for o...OK
Thu Apr 30 17:07:59 SAST 2026 [elapsed=364 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Thu Apr 30 17:08:28 SAST 2026 [elapsed=393 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
Thu Apr 30 17:08:30 SAST 2026 [elapsed=395 sec] NOTICES: det_dzdx=-888 is outside range +-250 from -558; det_dzdy=2264 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Thu Apr 30 17:08:30 SAST 2026 [elapsed=395 sec] Happy observing!
Thu Apr 30 17:08:30 SAST 2026 [elapsed=395 sec] Preflight took 394 seconds to complete.
Thu Apr 30 17:08:30 SAST 2026 [elapsed=395 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 0.050s 115 1.3% A 0.081s 375 4.1% A 0.111s 723 7.9% A 0.141s 1180 12.9% A 0.171s 1761 19.2% A 0.202s 2443 26.7% A 0.232s 3239 35.4% A 0.262s 4144 45.3% A 0.292s 5074 55.4% A 0.323s 5969 65.2% A 0.353s 6752 73.8% A 0.383s 7413 81.0% A 0.413s 7990 87.3% A 0.444s 8444 92.2% A 0.474s 8782 95.9% A 0.504s 9022 98.6% A 0.534s 9135 99.8% A 0.565s 9153 100.0% B 0.020s 2 0.0% B 0.051s 112 1.2% B 0.081s 380 4.2% B 0.111s 730 8.0% B 0.141s 1202 13.1% B 0.172s 1775 19.4% B 0.202s 2466 26.9% B 0.232s 3243 35.4% B 0.262s 4139 45.2% B 0.293s 5103 55.7% B 0.323s 5961 65.1% B 0.353s 6749 73.7% B 0.383s 7421 81.1% B 0.414s 7985 87.2% B 0.444s 8443 92.2% B 0.474s 8786 96.0% B 0.504s 9016 98.5% B 0.534s 9137 99.8% B 0.565s 9155 100.0% sleeping 3 sec between shutter moves... A 0.020s 9153 100.0% A 0.050s 9057 98.9% A 0.081s 8788 96.0% A 0.111s 8432 92.1% A 0.141s 7975 87.1% A 0.172s 7400 80.8% A 0.202s 6715 73.4% A 0.232s 5922 64.7% A 0.263s 5011 54.7% A 0.293s 4069 44.5% A 0.323s 3193 34.9% A 0.353s 2409 26.3% A 0.383s 1731 18.9% A 0.414s 1164 12.7% A 0.444s 707 7.7% A 0.474s 368 4.0% A 0.504s 131 1.4% A 0.535s 15 0.2% A 0.565s 2 0.0% B 0.020s 9147 99.9% B 0.050s 9025 98.6% B 0.081s 8781 95.9% B 0.111s 8434 92.1% B 0.141s 7969 87.1% B 0.172s 7399 80.8% B 0.202s 6712 73.3% B 0.232s 5918 64.6% B 0.262s 5012 54.8% B 0.293s 4084 44.6% B 0.323s 3192 34.9% B 0.353s 2415 26.4% B 0.384s 1723 18.8% B 0.414s 1165 12.7% B 0.444s 712 7.8% B 0.474s 368 4.0% B 0.505s 140 1.5% B 0.535s 16 0.2% B 0.565s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R