STH Recent Preflight: 61177
Executing preflight for 61177 at Sat May 16 16:49:00 SAST 2026.
Log can be found in /atlas/obs/03/61177/preflight.dat.
Setting donefile '/atlas/obs/03/61177/preflight_complete.20260516144900.11042' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260516144900.11042.
Sat May 16 16:49:00 SAST 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat May 16 16:49:00 SAST 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-STH [fa00df85-32b5-4b33-a062-0d29089f4b3f;1800]
Sat May 16 16:49:00 SAST 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
doorpsw 3 ON redLED
Sat May 16 16:49:01 SAST 2026 [elapsed=1 sec] About to start STH preflight. Point your web browser at http://localhost:7354.
Sat May 16 16:49:01 SAST 2026 [elapsed=1 sec] auxcam is disabled.
Sat May 16 16:49:01 SAST 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat May 16 16:49:01 SAST 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1778942937
OK
Sat May 16 16:49:01 SAST 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat May 16 16:49:01 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 May 16 16:49:03 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 May 16 16:49:03 SAST 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat May 16 16:49:03 SAST 2026 [elapsed=3 sec] CLOCKS
admin: Sat May 16 14:49:03 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 957 1024 377 1.043 0.053 0.070
*metbox2.sth.atl .PPS. 1 u 593 1024 377 0.316 0.020 0.069
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-zibbi.ngei.csir 155.232.19.7 2 u 59 1024 377 24.293 -0.072 0.278
-ntp.as3741.net 129.134.26.123 2 u 184 1024 377 22.784 -0.667 0.942
-ntp2.as3741.net 129.134.26.123 2 u 1004 1024 377 7.236 -0.143 0.140
-ntp2.inx.net.za 210.182.58.253 2 u 847 1024 377 7.288 0.097 0.077
102.222.100.153 196.21.187.2 2 u 17d 1024 0 7.937 0.836 0.000
-ntp5.inx.net.za 183.3.52.101 2 u 210 1024 377 7.497 -0.008 0.101
+flipping.cloudh 80.72.67.48 3 u 850 1024 377 7.736 -0.105 0.271
102.216.37.99 ( 210.182.58.253 2 u 103d 1024 0 73.586 -0.040 0.000
-139.84.231.151 196.21.187.2 2 u 584 1024 377 22.754 0.319 1.197
Sat May 16 16:49:15 SAST 2026 [elapsed=15 sec] DISKS
200GB available in /atlas/obs...OK (6499GB)
200GB available in /atlas/red...OK (9361GB)
Checking disks on admin ... archon ... tcs ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p2 11T 4.1T 6.2T 40% /
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 9.0T 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
Sat May 16 16:49:15 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
Sat May 16 16:49:15 SAST 2026 [elapsed=15 sec] Disabling mount tracking.
Sat May 16 16:49:15 SAST 2026 [elapsed=15 sec] SERVICES2
Sat May 16 16:49:15 SAST 2026 [elapsed=15 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat May 16 16:49:20 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= 930kB time=00:00:29.76 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/OPEN (0%) IDLE
Sat May 16 16:51:52 SAST 2026 [elapsed=172 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: 116.03 -29.49, az/alt=324.66 +86.49 idle(e) IDLE
Sat May 16 16:52:51 SAST 2026 [elapsed=231 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat May 16 16:53:12 SAST 2026 [elapsed=252 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=45.8 IDLE
Sat May 16 16:53:12 SAST 2026 [elapsed=252 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (4 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.7C)
Checking CCD plane: Z0=+1720.00 DZDX=-886.00 DZDY=+2621.00
acam: -55C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sat May 16 16:53:12 SAST 2026 [elapsed=252 sec] WEATHER
status weather: clear 15.2C 39% 15/21kph@41 DP13.3C/-11C/d IDLE
...OK
Sat May 16 16:53:13 SAST 2026 [elapsed=253 sec] MET
status...OK
met: c=N o=Y Ro3d Co2d Wo3d Ho2d To49d Do21h IDLE
Sat May 16 16:53:13 SAST 2026 [elapsed=253 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat May 16 16:53:13 SAST 2026 [elapsed=253 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 144.95 -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 109 1.2%
A 0.081s 402 4.4%
A 0.111s 745 8.1%
A 0.141s 1207 13.2%
A 0.172s 1804 19.7%
A 0.202s 2489 27.2%
A 0.232s 3287 35.9%
A 0.263s 4194 45.8%
A 0.293s 5144 56.2%
A 0.323s 6018 65.7%
A 0.353s 6779 74.1%
A 0.384s 7458 81.5%
A 0.414s 8017 87.6%
A 0.444s 8478 92.6%
A 0.474s 8801 96.1%
A 0.505s 9021 98.5%
A 0.535s 9153 100.0%
B 0.020s 1 0.0%
B 0.050s 97 1.1%
B 0.081s 385 4.2%
B 0.111s 727 7.9%
B 0.141s 1197 13.1%
B 0.172s 1777 19.4%
B 0.202s 2465 26.9%
B 0.232s 3256 35.6%
B 0.263s 4166 45.5%
B 0.293s 5102 55.7%
B 0.323s 5991 65.4%
B 0.353s 6774 74.0%
B 0.384s 7435 81.2%
B 0.414s 8011 87.5%
B 0.444s 8455 92.4%
B 0.475s 8797 96.1%
B 0.505s 9028 98.6%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9069 99.1%
A 0.081s 8772 95.8%
A 0.111s 8414 91.9%
A 0.142s 7968 87.0%
A 0.172s 7373 80.5%
A 0.202s 6692 73.1%
A 0.233s 5897 64.4%
A 0.263s 4982 54.4%
A 0.293s 4045 44.2%
A 0.323s 3167 34.6%
A 0.354s 2376 26.0%
A 0.384s 1710 18.7%
A 0.414s 1148 12.5%
A 0.444s 699 7.6%
A 0.475s 354 3.9%
A 0.505s 128 1.4%
A 0.535s 13 0.1%
A 0.565s -7 0.0%
B 0.020s 9146 99.9%
B 0.050s 9034 98.7%
B 0.081s 8772 95.8%
B 0.111s 8425 92.0%
B 0.141s 7957 86.9%
B 0.172s 7378 80.6%
B 0.202s 6695 73.1%
B 0.232s 5897 64.4%
B 0.263s 4985 54.5%
B 0.293s 4049 44.2%
B 0.323s 3136 34.3%
B 0.354s 2361 25.8%
B 0.384s 1691 18.5%
B 0.414s 1126 12.3%
B 0.445s 684 7.5%
B 0.475s 346 3.8%
B 0.505s 122 1.3%
B 0.535s 9 0.1%
A 1 0.0mm 15 N F R | B -4 -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 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.11e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[2] foc=9229 IDLE
Sat May 16 16:54:09 SAST 2026 [elapsed=309 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=45.8 IDLE
taking preflight exposures:
acam...OK
acam image:
125M May 16 16:54 /atlas/obs/03a/61177/03a61177e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat May 16 16:54:31 SAST 2026 [elapsed=331 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (74 seconds old)
OTA humidity level...OK (8%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat May 16 16:54:31 SAST 2026 [elapsed=331 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61176.62120417|info|galildriver|using focus model: foc=9187+(4.30)*16.5+(-0.40)*60.2=9233.9
61176.62120941|info|galildriver|o 2 IN | cass: 3046509 15.23 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54005406 9230 um b=8f M [focus]
61176.62122002|info|galildriver|o 2 IN | cass: 3046512 15.23 mm b=23 move=NO | arm: 408733 475.83 mm b=03 move=OK | foc: 54005478 9231 um b=2f [cmd]
bestfocus for o...OK
Sat May 16 16:54:34 SAST 2026 [elapsed=334 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat May 16 16:55:04 SAST 2026 [elapsed=364 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 May 16 16:55:05 SAST 2026 [elapsed=365 sec] NOTICES: det_dzdx=-886 is outside range +-250 from -558; det_dzdy=2621 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 May 16 16:55:05 SAST 2026 [elapsed=365 sec] Happy observing!
Sat May 16 16:55:05 SAST 2026 [elapsed=365 sec] Preflight took 365 seconds to complete.
Sat May 16 16:55:05 SAST 2026 [elapsed=365 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 0.051s 116 1.3% A 0.081s 386 4.2% A 0.112s 735 8.0% A 0.142s 1196 13.1% A 0.173s 1801 19.7% A 0.204s 2488 27.2% A 0.234s 3321 36.3% A 0.265s 4235 46.3% A 0.295s 5162 56.4% A 0.326s 6051 66.1% A 0.356s 6821 74.5% A 0.387s 7493 81.9% A 0.417s 8057 88.0% A 0.448s 8495 92.8% A 0.478s 8821 96.4% A 0.509s 9049 98.9% A 0.539s 9145 99.9% B 0.020s 1 0.0% B 0.050s 104 1.1% B 0.081s 369 4.0% B 0.111s 715 7.8% B 0.141s 1186 13.0% B 0.172s 1751 19.1% B 0.202s 2443 26.7% B 0.232s 3241 35.4% B 0.263s 4137 45.2% B 0.293s 5075 55.4% B 0.324s 5988 65.4% B 0.354s 6772 74.0% B 0.385s 7440 81.3% B 0.415s 8018 87.6% B 0.446s 8468 92.5% B 0.476s 8805 96.2% B 0.507s 9028 98.6% B 0.537s 9141 99.9% B 0.568s 9157 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9044 98.8% A 0.081s 8767 95.8% A 0.111s 8408 91.9% A 0.142s 7942 86.8% A 0.172s 7360 80.4% A 0.203s 6644 72.6% A 0.234s 5839 63.8% A 0.264s 4920 53.7% A 0.295s 3950 43.2% A 0.325s 3085 33.7% A 0.355s 2317 25.3% A 0.386s 1651 18.0% A 0.416s 1097 12.0% A 0.447s 655 7.2% A 0.477s 322 3.5% A 0.508s 104 1.1% A 0.538s 8 0.1% B 0.020s 9144 99.9% B 0.051s 9015 98.5% B 0.082s 8770 95.8% B 0.112s 8405 91.8% B 0.143s 7934 86.7% B 0.173s 7357 80.4% B 0.203s 6665 72.8% B 0.234s 5864 64.1% B 0.264s 4919 53.7% B 0.295s 3993 43.6% B 0.325s 3110 34.0% B 0.356s 2344 25.6% B 0.387s 1643 17.9% B 0.417s 1100 12.0% B 0.447s 660 7.2% B 0.478s 329 3.6% B 0.509s 111 1.2% B 0.539s 7 0.1% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R