STH Recent Preflight: 61128
Executing preflight for 61128 at Sat Mar 28 17:40:06 SAST 2026.
Log can be found in /atlas/obs/03/61128/preflight.dat.
Setting donefile '/atlas/obs/03/61128/preflight_complete.20260328154006.15307' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260328154006.15307.
Sat Mar 28 17:40:07 SAST 2026 [elapsed=1 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Mar 28 17:40:07 SAST 2026 [elapsed=1 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [8eaa0bb5-32d4-49de-85dd-0a0c7e3298d8;1800]
Sat Mar 28 17:40:07 SAST 2026 [elapsed=1 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Mar 28 17:40:08 SAST 2026 [elapsed=2 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Mar 28 17:40:08 SAST 2026 [elapsed=2 sec] auxcam is disabled.
Sat Mar 28 17:40:08 SAST 2026 [elapsed=2 sec] Skipping auxcam.
error: unknown module: vent
Sat Mar 28 17:40:08 SAST 2026 [elapsed=2 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1774712404
OK
Sat Mar 28 17:40:08 SAST 2026 [elapsed=2 sec] OPSEC
AUTO mode: ...OK
Sat Mar 28 17:40:08 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
Sat Mar 28 17:40:10 SAST 2026 [elapsed=4 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 Mar 28 17:40:10 SAST 2026 [elapsed=4 sec] QUEUE
0 observations queued.
Sat Mar 28 17:40:10 SAST 2026 [elapsed=4 sec] CLOCKS
admin: Sat Mar 28 15:40:10 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 379 1024 377 1.079 0.112 0.058
*metbox2.sth.atl .PPS. 1 u 746 1024 377 0.317 0.106 0.080
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.8 2 u 298 1024 377 25.071 0.456 0.286
+ntp.as3741.net 146.64.8.7 2 u 102 1024 377 22.785 0.077 0.257
-ntp2.as3741.net 155.232.19.6 2 u 775 1024 377 7.337 0.360 0.081
-ntp2.inx.net.za 196.21.187.2 2 u 769 1024 377 7.325 0.569 0.096
-102.222.100.153 155.232.19.6 2 u 29 1024 377 7.897 0.351 0.355
-ntp5.inx.net.za 196.21.187.2 2 u 455 1024 377 7.824 0.623 0.093
-flipping.cloudh 80.72.67.48 3 u 232 1024 377 8.200 0.179 0.115
102.216.37.99 ( 210.182.58.253 2 u 54d 1024 0 73.586 -0.040 0.000
-jnb.clearnet.pw 196.21.187.2 2 u 642 1024 377 23.758 0.905 0.166
Sat Mar 28 17:40:13 SAST 2026 [elapsed=7 sec] DISKS
200GB available in /atlas/obs...OK (6266GB)
200GB available in /atlas/red...OK (9195GB)
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/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 4.6T 8.8T 35% /
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 735G 13T 6% /
proc3:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
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
Sat Mar 28 17:40:13 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 Mar 28 17:40:14 SAST 2026 [elapsed=8 sec] Disabling mount tracking.
Sat Mar 28 17:40:14 SAST 2026 [elapsed=8 sec] SERVICES2
Sat Mar 28 17:40:14 SAST 2026 [elapsed=8 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Mar 28 17:40:18 SAST 2026 [elapsed=12 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= 908kB time=00:00:29.05 bitrate= 256.0kbits/s speed=1.5e+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 Mar 28 17:42:53 SAST 2026 [elapsed=167 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: 80.52 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sat Mar 28 17:43:53 SAST 2026 [elapsed=227 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Mar 28 17:44:14 SAST 2026 [elapsed=248 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.3 IDLE
Sat Mar 28 17:44:14 SAST 2026 [elapsed=248 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (8 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.1C)
Checking CCD plane: Z0=+1755.00 DZDX=-894.00 DZDY=+3438.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Mar 28 17:44:14 SAST 2026 [elapsed=248 sec] WEATHER
status weather: clear 19.8C 34% 26/31kph@292 DP14.7C/-38C/d IDLE
...OK
Sat Mar 28 17:44:15 SAST 2026 [elapsed=249 sec] MET
status...OK
met: c=N o=Y Ro23h Co21h Wo22h Ho23h To23h Do23h IDLE
Sat Mar 28 17:44:15 SAST 2026 [elapsed=249 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Mar 28 17:44:15 SAST 2026 [elapsed=249 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 109.45 -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 -1 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 7 0.1%
A 0.051s 109 1.2%
A 0.081s 392 4.3%
A 0.111s 733 8.0%
A 0.142s 1191 13.0%
A 0.172s 1781 19.5%
A 0.202s 2465 26.9%
A 0.232s 3262 35.6%
A 0.263s 4164 45.5%
A 0.293s 5114 55.9%
A 0.323s 5990 65.4%
A 0.353s 6756 73.8%
A 0.384s 7440 81.3%
A 0.414s 7982 87.2%
A 0.444s 8452 92.3%
A 0.474s 8781 95.9%
A 0.505s 9015 98.5%
A 0.535s 9148 99.9%
B 0.020s 2 0.0%
B 0.050s 105 1.1%
B 0.081s 396 4.3%
B 0.111s 739 8.1%
B 0.141s 1215 13.3%
B 0.172s 1798 19.6%
B 0.202s 2490 27.2%
B 0.232s 3284 35.9%
B 0.262s 4199 45.9%
B 0.293s 5132 56.1%
B 0.323s 6019 65.8%
B 0.353s 6799 74.3%
B 0.384s 7455 81.4%
B 0.414s 8028 87.7%
B 0.444s 8467 92.5%
B 0.475s 8805 96.2%
B 0.505s 9034 98.7%
B 0.535s 9144 99.9%
B 0.565s 9159 100.0%
sleeping 3 sec between shutter moves...
A 0.020s 9151 100.0%
A 0.050s 9069 99.1%
A 0.081s 8781 95.9%
A 0.111s 8415 91.9%
A 0.141s 7968 87.0%
A 0.172s 7370 80.5%
A 0.202s 6693 73.1%
A 0.233s 5896 64.4%
A 0.263s 4983 54.4%
A 0.293s 4044 44.2%
A 0.323s 3166 34.6%
A 0.353s 2377 26.0%
A 0.384s 1711 18.7%
A 0.414s 1148 12.5%
A 0.444s 699 7.6%
A 0.475s 355 3.9%
A 0.505s 130 1.4%
A 0.535s 14 0.2%
A 0.566s -6 0.0%
B 0.020s 9146 99.9%
B 0.050s 9034 98.7%
B 0.081s 8770 95.8%
B 0.111s 8424 92.0%
B 0.141s 7955 86.9%
B 0.172s 7378 80.6%
B 0.202s 6695 73.1%
B 0.232s 5896 64.4%
B 0.263s 4986 54.5%
B 0.293s 4021 43.9%
B 0.323s 3164 34.6%
B 0.353s 2361 25.8%
B 0.384s 1693 18.5%
B 0.414s 1126 12.3%
B 0.444s 685 7.5%
B 0.475s 346 3.8%
B 0.505s 122 1.3%
B 0.535s 10 0.1%
B 0.566s -4 0.0%
A 1 0.0mm 15 N F R | B -4 -0.1mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 99.9 percent in 0.535 seconds.
Shutter B opened to 100.0 percent in 0.565 seconds.
Shutter A closed to 0.0 percent in 0.566 seconds.
Shutter B closed to 0.0 percent in 0.566 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=9245 IDLE
Sat Mar 28 17:45:08 SAST 2026 [elapsed=302 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=46.3 IDLE
taking preflight exposures:
acam...OK
acam image:
126M Mar 28 17:45 /atlas/obs/03a/61128/03a61128e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Mar 28 17:45:30 SAST 2026 [elapsed=324 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (73 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Mar 28 17:45:30 SAST 2026 [elapsed=324 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61127.65660567|info|galildriver|using focus model: foc=9187+(4.30)*20.0+(-0.40)*60.2=9248.9
61127.65661091|info|galildriver|o 2 IN | cass: 3047714 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54008455 9245 um b=8f M [focus]
61127.65662152|info|galildriver|o 2 IN | cass: 3047715 15.24 mm b=23 move=NO | arm: 408806 475.92 mm b=03 move=OK | foc: 54008522 9246 um b=2f [cmd]
bestfocus for o...OK
Sat Mar 28 17:45:33 SAST 2026 [elapsed=327 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Mar 28 17:46:02 SAST 2026 [elapsed=356 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 Mar 28 17:46:04 SAST 2026 [elapsed=358 sec] NOTICES: det_dzdx=-894 is outside range +-250 from -558; det_dzdy=3438 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 Mar 28 17:46:04 SAST 2026 [elapsed=358 sec] Happy observing!
Sat Mar 28 17:46:04 SAST 2026 [elapsed=358 sec] Preflight took 358 seconds to complete.
Sat Mar 28 17:46:04 SAST 2026 [elapsed=358 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 0.051s 117 1.3% A 0.081s 381 4.2% A 0.111s 732 8.0% A 0.141s 1198 13.1% A 0.172s 1780 19.4% A 0.202s 2465 26.9% A 0.232s 3266 35.7% A 0.262s 4174 45.6% A 0.293s 5107 55.8% A 0.323s 5991 65.4% A 0.353s 6780 74.1% A 0.383s 7432 81.2% A 0.414s 8008 87.5% A 0.444s 8458 92.4% A 0.474s 8788 96.0% A 0.504s 9029 98.6% A 0.534s 9139 99.8% A 0.565s 9153 100.0% B 0.020s 1 0.0% B 0.050s 115 1.3% B 0.081s 378 4.1% B 0.111s 728 8.0% B 0.141s 1201 13.1% B 0.171s 1773 19.4% B 0.202s 2464 26.9% B 0.232s 3267 35.7% B 0.262s 4168 45.5% B 0.292s 5103 55.7% B 0.323s 5987 65.4% B 0.353s 6771 74.0% B 0.383s 7440 81.3% B 0.413s 8002 87.4% B 0.444s 8457 92.4% B 0.474s 8795 96.1% B 0.504s 9023 98.6% B 0.534s 9137 99.8% B 0.565s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9149 99.9% A 0.050s 9051 98.9% A 0.081s 8776 95.9% A 0.111s 8422 92.0% A 0.141s 7977 87.1% A 0.171s 7400 80.8% A 0.202s 6710 73.3% A 0.232s 5924 64.7% A 0.262s 5008 54.7% A 0.292s 4067 44.4% A 0.322s 3194 34.9% A 0.353s 2404 26.3% A 0.383s 1737 19.0% A 0.413s 1160 12.7% A 0.444s 706 7.7% A 0.474s 369 4.0% A 0.504s 129 1.4% A 0.534s 17 0.2% A 0.565s 4 0.0% B 0.020s 9144 99.9% B 0.050s 9018 98.5% B 0.081s 8770 95.8% B 0.111s 8421 92.0% B 0.141s 7951 86.9% B 0.172s 7377 80.6% B 0.202s 6686 73.0% B 0.232s 5918 64.6% B 0.262s 4981 54.4% B 0.293s 4052 44.3% B 0.323s 3191 34.9% B 0.353s 2412 26.3% B 0.383s 1705 18.6% B 0.414s 1164 12.7% B 0.444s 713 7.8% B 0.474s 366 4.0% B 0.504s 138 1.5% B 0.534s 16 0.2% B 0.565s 1 0.0% A -1 -0.0mm 15 N F R | B 1 0.0mm 15 N F R