STH Recent Preflight: 61275
Executing preflight for 61275 at Sat Aug 22 18:30:30 SAST 2026.
Log can be found in /atlas/obs/03/61275/preflight.dat.
Setting donefile '/atlas/obs/03/61275/preflight_complete.20260822163030.30267' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260822163030.30267.
Sat Aug 22 18:30:30 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Aug 22 18:30:30 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [915819cd-7045-4036-a0bc-2606d8f1657d;1800]
Sat Aug 22 18:30:30 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat Aug 22 18:30:31 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat Aug 22 18:30:31 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat Aug 22 18:30:31 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Aug 22 18:30:31 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1787416229
OK
Sat Aug 22 18:30:31 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Aug 22 18:30:31 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 Aug 22 18:30:33 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
Sat Aug 22 18:30:33 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Aug 22 18:30:33 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sat Aug 22 16:30:33 UTC 2026
metbox: 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 925 1024 377 1.048 0.032 0.036
*metbox2.sth.atl .PPS. 1 u 265 1024 377 0.333 -0.019 0.021
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 183.3.52.101 2 u 946 1024 377 23.325 3.170 2.653
-ntp.as3741.net 146.64.58.41 2 u 933 1024 377 22.912 -0.112 0.401
-ntp2.as3741.net 146.64.58.41 2 u 507 1024 377 7.201 -0.065 0.041
-ntp2.inx.net.za 210.182.58.253 2 u 554 1024 377 7.311 -0.009 0.032
-ntp5.inx.net.za 210.182.58.253 2 u 937 1024 377 7.855 -0.041 0.207
#102.222.156.151 196.21.187.2 2 u 184 1024 377 24.655 0.272 0.166
+ntp2.nog.net.za 80.72.67.48 3 u 877 1024 377 7.558 0.051 0.128
-139.84.231.68 ( 196.21.187.2 2 u 602 1024 377 22.776 0.094 0.321
-ntp8.inx.net.za 210.182.58.253 2 u 190 1024 377 16.838 0.003 3.340
Sat Aug 22 18:30:34 SAST 2026 [elapsed=4 sec] DISKS
200GB available in /atlas/obs...OK (5081GB)
200GB available in /atlas/red...OK (7585GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 5.4T 4.9T 53% /
admin:/dev/loop0 106M 106M 0 100% /snap/core/17284
admin:/dev/loop1 106M 106M 0 100% /snap/core/17292
archon:/dev/sda2 117G 22G 89G 20% /
archon:/dev/loop1 106M 106M 0 100% /snap/core/17284
archon:/dev/loop0 106M 106M 0 100% /snap/core/17292
archon:/dev/sda1 511M 6.6M 505M 2% /boot/efi
tcs:/dev/mapper/ubuntu--vg-ubuntu--lv 98G 38G 56G 41% /
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 6.2T 7.3T 46% /
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/loop0 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 737G 13T 6% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/md0p1 15T 1.1T 13T 8% /
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17292
Sat Aug 22 18:30:35 SAST 2026 [elapsed=5 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 Aug 22 18:30:35 SAST 2026 [elapsed=5 sec] Disabling mount tracking.
Sat Aug 22 18:30:35 SAST 2026 [elapsed=5 sec] SERVICES2
Sat Aug 22 18:30:35 SAST 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Aug 22 18:30:39 SAST 2026 [elapsed=9 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= 924kB time=00:00:29.56 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 Aug 22 18:33:54 SAST 2026 [elapsed=204 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: 238.34 -29.49, az/alt=324.74 +86.49 idle(e) IDLE
Sat Aug 22 18:35:24 SAST 2026 [elapsed=294 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Aug 22 18:35:43 SAST 2026 [elapsed=313 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Sat Aug 22 18:35:43 SAST 2026 [elapsed=313 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (6 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.4C)
Checking CCD plane: Z0=+1718.00 DZDX=-873.00 DZDY=+2630.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat Aug 22 18:35:43 SAST 2026 [elapsed=313 sec] WEATHER
status weather: clear 9.5C 52% 4/10kph@206 DP8.2C/-44C/d IDLE
...OK
Sat Aug 22 18:35:44 SAST 2026 [elapsed=314 sec] MET
status...OK
met: c=N o=Y Ro10d Co7d Wo11d Ho9d To65d Do30d IDLE
Sat Aug 22 18:35:44 SAST 2026 [elapsed=314 sec] SENTRY
status...OK
sentry: close=NO open=YES drop=YES IDLE
Sat Aug 22 18:35:44 SAST 2026 [elapsed=314 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 267.25 -14.64, 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 7 0.1%
A 0.051s 114 1.2%
A 0.081s 390 4.3%
A 0.111s 733 8.0%
A 0.141s 1189 13.0%
A 0.172s 1781 19.5%
A 0.202s 2466 26.9%
A 0.232s 3259 35.6%
A 0.262s 4164 45.5%
A 0.293s 5115 55.9%
A 0.323s 5990 65.4%
A 0.353s 6781 74.1%
A 0.383s 7438 81.3%
A 0.414s 8000 87.4%
A 0.444s 8466 92.5%
A 0.474s 8792 96.0%
A 0.504s 9021 98.5%
A 0.535s 9152 100.0%
B 0.020s 1 0.0%
B 0.050s 96 1.0%
B 0.081s 380 4.2%
B 0.111s 724 7.9%
B 0.141s 1197 13.1%
B 0.172s 1776 19.4%
B 0.202s 2467 26.9%
B 0.232s 3256 35.6%
B 0.263s 4165 45.5%
B 0.293s 5102 55.7%
B 0.323s 5992 65.5%
B 0.353s 6775 74.0%
B 0.384s 7435 81.2%
B 0.414s 8010 87.5%
B 0.444s 8456 92.4%
B 0.475s 8798 96.1%
B 0.505s 9028 98.6%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9149 99.9%
A 0.051s 9058 99.0%
A 0.081s 8761 95.7%
A 0.111s 8402 91.8%
A 0.141s 7953 86.9%
A 0.172s 7352 80.3%
A 0.202s 6668 72.8%
A 0.232s 5871 64.1%
A 0.262s 4952 54.1%
A 0.293s 4014 43.8%
A 0.323s 3138 34.3%
A 0.353s 2353 25.7%
A 0.384s 1688 18.4%
A 0.414s 1130 12.3%
A 0.444s 685 7.5%
A 0.474s 344 3.8%
A 0.504s 124 1.4%
A 0.535s 11 0.1%
A 0.565s -7 0.0%
B 0.020s 9146 99.9%
B 0.050s 9040 98.8%
B 0.081s 8784 96.0%
B 0.111s 8437 92.2%
B 0.141s 7957 86.9%
B 0.172s 7380 80.6%
B 0.202s 6694 73.1%
B 0.232s 5924 64.7%
B 0.262s 5014 54.8%
B 0.293s 4081 44.6%
B 0.323s 3192 34.9%
B 0.353s 2405 26.3%
B 0.383s 1733 18.9%
B 0.414s 1157 12.6%
B 0.444s 710 7.8%
B 0.474s 364 4.0%
B 0.505s 134 1.5%
B 0.535s 13 0.1%
B 0.565s -8 0.0%
A 1 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 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=1.1e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9236 IDLE
Sat Aug 22 18:36:22 SAST 2026 [elapsed=352 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:
122M Aug 22 18:36 /atlas/obs/03a/61275/03a61275e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Aug 22 18:36:44 SAST 2026 [elapsed=374 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (24 seconds old)
OTA humidity level...OK (15%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Aug 22 18:36:44 SAST 2026 [elapsed=374 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61274.69219056|info|galildriver|using focus model: foc=9187+(4.30)*15.9+(-0.40)*60.2=9231.3
61274.69219557|info|galildriver|o 2 IN | cass: 3041303 15.21 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54006706 9237 um b=8f M [focus]
61274.69220572|info|galildriver|o 2 IN | cass: 3041303 15.21 mm b=23 move=NO | arm: 409734 477.00 mm b=23 move=OK | foc: 54006724 9237 um b=0f [cmd]
bestfocus for o...OK
Sat Aug 22 18:36:47 SAST 2026 [elapsed=377 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Aug 22 18:37:12 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 Aug 22 18:37:14 SAST 2026 [elapsed=404 sec] NOTICES: det_dzdx=-873 is outside range +-250 from -558; det_dzdy=2630 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 Aug 22 18:37:14 SAST 2026 [elapsed=404 sec] Happy observing!
Sat Aug 22 18:37:14 SAST 2026 [elapsed=404 sec] Preflight took 404 seconds to complete.
Sat Aug 22 18:37:14 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 0.050s 109 1.2% A 0.081s 374 4.1% A 0.111s 722 7.9% A 0.141s 1180 12.9% A 0.172s 1782 19.5% A 0.202s 2442 26.7% A 0.232s 3239 35.4% A 0.262s 4143 45.3% A 0.292s 5073 55.4% A 0.323s 5970 65.2% A 0.353s 6752 73.8% A 0.383s 7414 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 9137 99.8% A 0.564s 9154 100.0% B 0.020s 2 0.0% B 0.050s 119 1.3% B 0.081s 388 4.2% B 0.111s 742 8.1% B 0.141s 1220 13.3% B 0.171s 1795 19.6% B 0.201s 2492 27.2% B 0.232s 3268 35.7% B 0.262s 4166 45.5% B 0.292s 5103 55.7% B 0.322s 5989 65.4% B 0.353s 6772 74.0% B 0.383s 7439 81.3% B 0.413s 8001 87.4% B 0.443s 8455 92.4% B 0.474s 8794 96.1% B 0.504s 9024 98.6% B 0.534s 9138 99.8% B 0.564s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9151 100.0% A 0.050s 9048 98.8% A 0.081s 8778 95.9% A 0.111s 8421 92.0% A 0.141s 7958 86.9% A 0.171s 7381 80.6% 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 3166 34.6% A 0.353s 2386 26.1% A 0.383s 1730 18.9% A 0.413s 1163 12.7% A 0.443s 706 7.7% A 0.474s 366 4.0% A 0.504s 131 1.4% A 0.534s 15 0.2% A 0.564s 1 0.0% B 0.020s 9143 99.9% B 0.051s 9018 98.5% B 0.081s 8770 95.8% B 0.111s 8421 92.0% B 0.141s 7950 86.8% B 0.172s 7377 80.6% B 0.202s 6689 73.1% B 0.232s 5892 64.4% B 0.262s 4979 54.4% B 0.293s 4052 44.3% B 0.323s 3163 34.6% B 0.353s 2394 26.2% B 0.383s 1701 18.6% B 0.414s 1147 12.5% B 0.444s 699 7.6% B 0.474s 364 4.0% B 0.504s 138 1.5% B 0.535s 15 0.2% B 0.565s 0 0.0% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R