STH Recent Preflight: 61151
Executing preflight for 61151 at Mon Apr 20 17:12:11 SAST 2026.
Log can be found in /atlas/obs/03/61151/preflight.dat.
Setting donefile '/atlas/obs/03/61151/preflight_complete.20260420151211.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260420151211.11042.
Mon Apr 20 17:12:11 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon Apr 20 17:12:11 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [b9b49695-c329-4c22-9525-34d9a6a08931;1800]
Mon Apr 20 17:12:11 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Mon Apr 20 17:12:12 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Mon Apr 20 17:12:12 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Mon Apr 20 17:12:12 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Mon Apr 20 17:12:12 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776697923
OK
Mon Apr 20 17:12:12 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Mon Apr 20 17:12:12 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
Mon Apr 20 17:12:13 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
Mon Apr 20 17:12:14 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Mon Apr 20 17:12:14 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Mon Apr 20 15:12:14 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 366 1024 343 1.021 -0.629 0.389
-metbox2.sth.atl .PPS. 1 u 875 1024 377 0.275 -0.884 0.234
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.8 2 u 283 1024 377 24.134 0.064 0.387
+ntp.as3741.net 146.64.58.41 2 u 519 1024 377 22.897 -0.780 0.408
-ntp2.as3741.net 155.232.19.7 2 u 278 1024 377 7.253 -0.295 0.246
-ntp2.inx.net.za 183.3.52.101 2 u 669 1024 377 7.192 -0.388 0.226
-102.222.100.153 155.232.19.6 2 u 19 1024 377 7.763 0.499 0.716
-ntp5.inx.net.za 196.21.187.2 2 u 923 1024 377 7.885 -0.303 0.192
+flipping.cloudh 80.72.67.48 3 u 572 1024 377 8.148 -0.379 0.197
102.216.37.99 ( 210.182.58.253 2 u 77d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 183.3.52.101 2 u 363 1024 377 23.470 -0.184 0.738
Mon Apr 20 17:12:17 SAST 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (6147GB)
200GB available in /atlas/red...OK (8877GB)
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/loop1 105M 105M 0 100% /snap/core/17272
admin:/dev/loop2 106M 106M 0 100% /snap/core/17284
archon:/dev/sda2 117G 21G 91G 19% /
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
archon:/dev/loop2 105M 105M 0 100% /snap/core/17272
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
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 4.9T 8.5T 37% /
proc1:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc1:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/md0p1 15T 1.7T 12T 13% /
proc2:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17284
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/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Mon Apr 20 17:12:17 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
Mon Apr 20 17:12:17 SAST 2026 [elapsed=6 sec] Disabling mount tracking.
Mon Apr 20 17:12:17 SAST 2026 [elapsed=6 sec] SERVICES2
Mon Apr 20 17:12:17 SAST 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon Apr 20 17:12:21 SAST 2026 [elapsed=10 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=1.49e+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
Mon Apr 20 17:15:31 SAST 2026 [elapsed=200 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: 96.33 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Mon Apr 20 17:16:29 SAST 2026 [elapsed=258 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.8 IDLE
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 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 (-55.5C)
Checking CCD plane: Z0=+1655.00 DZDX=-885.00 DZDY=+1131.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 sec] WEATHER
status weather: W 5.3C 74% 30/37kph@328 DP3.8C/-20C/d IDLE
...OK
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 sec] MET
status...OK
met: c=N o=Y Ro12h Co3h Wo8h Ho5h To23d Do3d IDLE
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon Apr 20 17:16:51 SAST 2026 [elapsed=280 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 125.25 -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 10 0.1%
A 0.051s 114 1.2%
A 0.081s 399 4.4%
A 0.111s 744 8.1%
A 0.141s 1207 13.2%
A 0.172s 1800 19.7%
A 0.202s 2490 27.2%
A 0.232s 3286 35.9%
A 0.262s 4192 45.8%
A 0.293s 5146 56.2%
A 0.323s 6019 65.8%
A 0.353s 6803 74.3%
A 0.383s 7458 81.5%
A 0.414s 8018 87.6%
A 0.444s 8478 92.6%
A 0.474s 8802 96.2%
A 0.505s 9029 98.6%
A 0.535s 9155 100.0%
B 0.020s 2 0.0%
B 0.050s 103 1.1%
B 0.081s 388 4.2%
B 0.111s 740 8.1%
B 0.141s 1213 13.3%
B 0.172s 1794 19.6%
B 0.202s 2489 27.2%
B 0.232s 3283 35.9%
B 0.263s 4198 45.9%
B 0.293s 5132 56.1%
B 0.323s 6019 65.8%
B 0.353s 6797 74.3%
B 0.384s 7456 81.5%
B 0.414s 8027 87.7%
B 0.444s 8468 92.5%
B 0.474s 8808 96.2%
B 0.505s 9037 98.7%
B 0.535s 9150 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.050s 9065 99.0%
A 0.081s 8775 95.9%
A 0.111s 8416 91.9%
A 0.141s 7967 87.0%
A 0.172s 7375 80.6%
A 0.202s 6694 73.1%
A 0.232s 5894 64.4%
A 0.263s 4984 54.4%
A 0.293s 4046 44.2%
A 0.323s 3165 34.6%
A 0.353s 2378 26.0%
A 0.384s 1706 18.6%
A 0.414s 1145 12.5%
A 0.444s 698 7.6%
A 0.474s 354 3.9%
A 0.505s 128 1.4%
A 0.535s 10 0.1%
A 0.565s -9 0.0%
B 0.020s 9145 99.9%
B 0.050s 9029 98.6%
B 0.081s 8767 95.8%
B 0.111s 8413 91.9%
B 0.141s 7942 86.8%
B 0.172s 7360 80.4%
B 0.202s 6671 72.9%
B 0.232s 5870 64.1%
B 0.262s 4955 54.1%
B 0.293s 4020 43.9%
B 0.323s 3135 34.2%
B 0.353s 2361 25.8%
B 0.384s 1692 18.5%
B 0.414s 1123 12.3%
B 0.444s 684 7.5%
B 0.474s 344 3.8%
B 0.505s 121 1.3%
B 0.535s 9 0.1%
A 0 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 0.535 seconds.
Shutter B opened to 100.0 percent in 0.535 seconds.
Shutter A closed to 0.0 percent in 0.565 seconds.
Shutter B closed to 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 224kB time=00:00:07.16 bitrate= 256.1kbits/s speed=1.13e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=c[1] foc=9202 IDLE
Mon Apr 20 17:17:29 SAST 2026 [elapsed=318 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.8 IDLE
taking preflight exposures:
acam...OK
acam image:
125M Apr 20 17:17 /atlas/obs/03a/61151/03a61151e0001c.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon Apr 20 17:17:52 SAST 2026 [elapsed=341 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (35 seconds old)
OTA humidity level...OK (7%)
Dome humidity exists...OK
Dome humidity is current... OK
Mon Apr 20 17:17:52 SAST 2026 [elapsed=341 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61150.63741540|info|galildriver|using focus model: foc=9187+(4.30)*10.2+(-0.40)*60.2=9206.8
61150.63742065|info|galildriver|c 1 IN | cass: 22652 0.11 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 53999962 9203 um b=8f M [focus]
61150.63743125|info|galildriver|c 1 IN | cass: 22653 0.11 mm b=23 move=NO | arm: 408768 475.87 mm b=03 move=OK | foc: 54000035 9203 um b=2f [cmd]
bestfocus for c...OK
Mon Apr 20 17:17:54 SAST 2026 [elapsed=343 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon Apr 20 17:18:25 SAST 2026 [elapsed=374 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
Mon Apr 20 17:18:27 SAST 2026 [elapsed=376 sec] NOTICES: det_dzdx=-885 is outside range +-250 from -558; det_dzdy=1131 is outside range +-250 from -1915;
Preflight completed successfully. See
http://tinyurl.com/sthpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Mon Apr 20 17:18:27 SAST 2026 [elapsed=376 sec] Happy observing!
Mon Apr 20 17:18:27 SAST 2026 [elapsed=376 sec] Preflight took 376 seconds to complete.
Mon Apr 20 17:18:27 SAST 2026 [elapsed=376 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 385 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1782 19.5% A 0.202s 2466 26.9% A 0.232s 3267 35.7% A 0.262s 4173 45.6% A 0.293s 5104 55.8% A 0.323s 5997 65.5% A 0.353s 6775 74.0% A 0.383s 7434 81.2% A 0.413s 8005 87.4% A 0.444s 8457 92.4% A 0.474s 8791 96.0% A 0.504s 9027 98.6% A 0.534s 9137 99.8% A 0.564s 9153 100.0% B 0.020s 2 0.0% B 0.050s 110 1.2% B 0.081s 381 4.2% B 0.111s 727 7.9% B 0.141s 1203 13.1% B 0.171s 1774 19.4% B 0.202s 2467 26.9% B 0.232s 3240 35.4% B 0.262s 4136 45.2% B 0.292s 5074 55.4% B 0.322s 5963 65.1% B 0.353s 6749 73.7% B 0.383s 7418 81.0% B 0.413s 7985 87.2% B 0.443s 8442 92.2% B 0.474s 8785 96.0% B 0.504s 9017 98.5% B 0.534s 9136 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9058 99.0% A 0.081s 8787 96.0% A 0.111s 8433 92.1% A 0.141s 7975 87.1% A 0.172s 7400 80.8% A 0.202s 6715 73.4% A 0.232s 5921 64.7% A 0.262s 5013 54.8% A 0.293s 4069 44.5% A 0.323s 3192 34.9% A 0.353s 2409 26.3% A 0.384s 1732 18.9% A 0.414s 1164 12.7% A 0.444s 706 7.7% A 0.474s 367 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 9024 98.6% B 0.081s 8781 95.9% B 0.111s 8433 92.1% B 0.141s 7968 87.0% B 0.171s 7398 80.8% B 0.202s 6713 73.3% B 0.232s 5922 64.7% B 0.262s 5011 54.7% B 0.292s 4081 44.6% B 0.323s 3191 34.9% B 0.353s 2414 26.4% B 0.383s 1725 18.8% B 0.413s 1166 12.7% B 0.443s 712 7.8% B 0.474s 367 4.0% B 0.504s 144 1.6% B 0.534s 16 0.2% B 0.564s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R