CHL Preflight Night 61141
Executing preflight for 61141 at Fri Apr 10 17:30:54 -04 2026.
Log can be found in /atlas/obs/04/61141/preflight.dat.
Setting donefile '/atlas/obs/04/61141/preflight_complete.20260410213054.11519' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260410213054.11519.
Fri Apr 10 17:30:54 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Fri Apr 10 17:30:54 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [4e6549fe-5c38-44c9-ad35-6d85cd98993a;1800]
Fri Apr 10 17:30:54 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Fri Apr 10 17:30:55 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Fri Apr 10 17:30:55 -04 2026 [elapsed=1 sec] auxcam is disabled.
Fri Apr 10 17:30:55 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Fri Apr 10 17:30:55 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775856647
OK
Fri Apr 10 17:30:55 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Fri Apr 10 17:30:55 -04 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
Fri Apr 10 17:30:58 -04 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-04a...OK
proc1 prochain-redpost-04x...OK
Fri Apr 10 17:30:58 -04 2026 [elapsed=4 sec] QUEUE
0 observations queued.
Fri Apr 10 17:30:58 -04 2026 [elapsed=4 sec] CLOCKS
admin: Fri Apr 10 21:30:58 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
==============================================================================
+metbox2.chl.atl .PPS. 1 u 31 512 377 0.311 1.299 1.081
*10.0.11.4 .GPS. 1 u 96 512 377 0.752 0.601 1.766
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 241 512 377 220.683 -6.045 1.457
-185.125.190.58 146.131.121.246 2 u 433 1024 377 221.951 -4.503 2.119
+alphyn.canonica 132.163.96.1 2 u 533 512 377 157.272 0.290 2.907
-185.125.190.56 146.131.121.246 2 u 299 512 377 219.610 -3.304 2.188
Fri Apr 10 17:31:00 -04 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (4012GB)
200GB available in /atlas/red...OK (7676GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.4T 3.9T 63% /
admin:/dev/loop2 105M 105M 0 100% /snap/core/17272
admin:/dev/loop0 106M 106M 0 100% /snap/core/17284
archon:/dev/mapper/ubuntu--vg-ubuntu--lv 58G 20G 35G 37% /
archon:/dev/loop0 106M 106M 0 100% /snap/core/17284
archon:/dev/loop1 105M 105M 0 100% /snap/core/17272
archon:/dev/sda2 974M 321M 586M 36% /boot
archon:/dev/sda1 511M 4.4M 507M 1% /boot/efi
proc1:/dev/md0p1 15T 6.4T 7.4T 47% /
proc1:/dev/sda1 511M 6.7M 505M 2% /boot/efi
proc1:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc1:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc2:/dev/md0p1 15T 610G 13T 5% /
proc2:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc3:/dev/md0p1 15T 902G 13T 7% /
proc3:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc4:/dev/md0p1 15T 692G 13T 6% /
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Fri Apr 10 17:31:00 -04 2026 [elapsed=6 sec] SERVICES1
xcam
chiller...OK
dome...OK
mount...OK
modo...OK
cam...OK
acam...OK
weather...OK
met...OK
sentry...OK
dfm...OK
duplicates...OK
Fri Apr 10 17:31:00 -04 2026 [elapsed=6 sec] Disabling mount tracking.
Fri Apr 10 17:31:01 -04 2026 [elapsed=7 sec] SERVICES2
Fri Apr 10 17:31:01 -04 2026 [elapsed=7 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Fri Apr 10 17:31:05 -04 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= 914kB time=00:00:29.24 bitrate= 256.0kbits/s speed=1.63e+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=35.00 CLOSED/CLOSED (0%) IDLE
Fri Apr 10 17:34:22 -04 2026 [elapsed=208 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: 89.93 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Fri Apr 10 17:35:27 -04 2026 [elapsed=273 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Fri Apr 10 17:35:52 -04 2026 [elapsed=298 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=948/0 spi=38.1 IDLE
Fri Apr 10 17:35:52 -04 2026 [elapsed=298 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (7 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.3C)
Checking CCD plane: Z0=-195.00 DZDX=+466.00 DZDY=-415.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=948 IDLE
Fri Apr 10 17:35:52 -04 2026 [elapsed=298 sec] WEATHER
status weather: C 21.5C 35% 6/12kph@280 DP13.0C/-128C/d IDLE
...OK
Fri Apr 10 17:35:53 -04 2026 [elapsed=299 sec] MET
status...OK
met: c=N o=Y Ro5d Co5d Wo5d Ho5d To5d Do5d IDLE
Fri Apr 10 17:35:53 -04 2026 [elapsed=299 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Fri Apr 10 17:35:53 -04 2026 [elapsed=299 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 118.61 -12.93, az/alt=59.87 +60.08 tracking(w) IDLE 0s
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 2 0.0%
B 0.020s -2 0.0%
A 2 0.1mm 15 N F R | B -1 -0.0mm 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 1 0.0mm 15 N F R
exercising shutters...Using amcam-mezz-s to record
A 0.020s 8 0.1%
A 0.051s 105 1.1%
A 0.081s 392 4.3%
A 0.111s 740 8.1%
A 0.141s 1226 13.4%
A 0.172s 1801 19.7%
A 0.202s 2491 27.2%
A 0.232s 3254 35.5%
A 0.262s 4165 45.5%
A 0.293s 5115 55.9%
A 0.323s 6012 65.7%
A 0.354s 6807 74.4%
A 0.384s 7448 81.4%
A 0.414s 8026 87.7%
A 0.444s 8471 92.5%
A 0.475s 8804 96.2%
A 0.505s 9036 98.7%
A 0.536s 9141 99.9%
A 0.566s 9158 100.0%
B 0.020s 1 0.0%
B 0.050s 87 1.0%
B 0.081s 376 4.1%
B 0.111s 736 8.0%
B 0.141s 1191 13.0%
B 0.172s 1781 19.5%
B 0.202s 2468 27.0%
B 0.232s 3254 35.5%
B 0.263s 4168 45.5%
B 0.293s 5113 55.9%
B 0.323s 5995 65.5%
B 0.354s 6779 74.1%
B 0.384s 7433 81.2%
B 0.414s 8010 87.5%
B 0.444s 8459 92.4%
B 0.475s 8793 96.1%
B 0.505s 9029 98.6%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.051s 9051 98.9%
A 0.081s 8770 95.8%
A 0.111s 8427 92.1%
A 0.142s 7966 87.0%
A 0.172s 7349 80.3%
A 0.203s 6668 72.8%
A 0.233s 5869 64.1%
A 0.263s 4944 54.0%
A 0.294s 4023 43.9%
A 0.324s 3135 34.2%
A 0.354s 2361 25.8%
A 0.384s 1691 18.5%
A 0.415s 1121 12.2%
A 0.445s 689 7.5%
A 0.475s 346 3.8%
A 0.506s 125 1.4%
A 0.536s 10 0.1%
A 0.566s -5 0.0%
B 0.020s 9149 99.9%
B 0.050s 9040 98.8%
B 0.081s 8771 95.8%
B 0.111s 8418 92.0%
B 0.141s 7960 87.0%
B 0.172s 7378 80.6%
B 0.202s 6687 73.1%
B 0.232s 5898 64.4%
B 0.262s 4991 54.5%
B 0.293s 4034 44.1%
B 0.323s 3168 34.6%
B 0.353s 2374 25.9%
B 0.384s 1714 18.7%
B 0.414s 1153 12.6%
B 0.444s 686 7.5%
B 0.475s 359 3.9%
B 0.505s 127 1.4%
B 0.536s 5 0.1%
A 0 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 0.566 seconds.
Shutter B opened to 99.9 percent in 0.535 seconds.
Shutter A closed to 0.0 percent in 0.566 seconds.
Shutter B closed to 0.1 percent in 0.536 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.2e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9878 IDLE
Fri Apr 10 17:36:26 -04 2026 [elapsed=332 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=948/0 spi=38.1 IDLE
taking preflight exposures:
acam...OK
acam image:
160M Apr 10 17:36 /atlas/obs/04a/61141/04a61141e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Fri Apr 10 17:36:48 -04 2026 [elapsed=354 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (12 seconds old)
OTA humidity level...OK (8%)
Dome humidity exists...OK
Dome humidity is current... OK
Fri Apr 10 17:36:48 -04 2026 [elapsed=354 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61140.90056885|info|galildriver|using focus model: foc=9830+(3.50)*19.6+(-0.35)*60.2=9877.5
61140.90057353|info|galildriver|o 3 IN | cass: 6107324 30.54 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53275078 9879 um b=0f [cmd]
bestfocus for o...OK
Fri Apr 10 17:36:50 -04 2026 [elapsed=356 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Fri Apr 10 17:37:23 -04 2026 [elapsed=389 sec] Disabling mount tracking.
Waiting on the mount ... done.
Turning tracking off ... done.
Waiting on the mount ... done.
Recheck mount status ... done.
sitepsw 3 OFF redLED
sitepsw 4 OFF whiteLED
Preflight completed successfully. See
http://tinyurl.com/chlpreflight
--
Please reduce summit bandwidth by turning off your webcam viewer.
Fri Apr 10 17:37:24 -04 2026 [elapsed=390 sec] Happy observing!
Fri Apr 10 17:37:24 -04 2026 [elapsed=390 sec] Preflight took 390 seconds to complete.
Fri Apr 10 17:37:24 -04 2026 [elapsed=390 sec] STARTING CLEANUP
Turning off LEDs
sitepsw 3 OFF redLED
sitepsw 4 OFF whiteLED
Releasing TCS lock [preflight]
OK TCS lock released by preflight-CHL
Preflight image
Shutter acutation data:
A 0.020s 4 0.0% A 0.051s 122 1.3% A 0.082s 405 4.4% A 0.112s 762 8.3% A 0.143s 1231 13.4% A 0.173s 1843 20.1% A 0.203s 2538 27.7% A 0.234s 3350 36.6% A 0.264s 4265 46.6% A 0.295s 5191 56.7% A 0.325s 6078 66.4% A 0.356s 6843 74.8% A 0.386s 7513 82.1% A 0.417s 8071 88.2% A 0.447s 8507 92.9% A 0.478s 8828 96.4% A 0.508s 9049 98.9% A 0.538s 9146 99.9% B 0.020s 2 0.0% B 0.051s 110 1.2% B 0.081s 387 4.2% B 0.111s 741 8.1% B 0.142s 1219 13.3% B 0.172s 1796 19.6% B 0.203s 2492 27.2% B 0.233s 3322 36.3% B 0.264s 4229 46.2% B 0.294s 5161 56.4% B 0.324s 6044 66.0% B 0.355s 6818 74.5% B 0.386s 7480 81.7% B 0.416s 8050 87.9% B 0.447s 8493 92.8% B 0.477s 8822 96.4% B 0.508s 9039 98.7% B 0.538s 9144 99.9% B 0.569s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.051s 9050 98.9% A 0.081s 8777 95.9% A 0.112s 8408 91.9% A 0.142s 7941 86.7% A 0.173s 7359 80.4% A 0.203s 6668 72.8% A 0.234s 5839 63.8% A 0.264s 4920 53.7% A 0.295s 3979 43.5% A 0.325s 3111 34.0% A 0.355s 2340 25.6% A 0.386s 1670 18.2% A 0.416s 1114 12.2% A 0.446s 669 7.3% A 0.477s 339 3.7% A 0.507s 114 1.2% A 0.538s 10 0.1% A 0.568s 2 0.0% B 0.020s 9145 99.9% B 0.051s 9018 98.5% B 0.081s 8772 95.8% B 0.111s 8420 92.0% B 0.142s 7951 86.9% B 0.172s 7378 80.6% B 0.203s 6690 73.1% B 0.233s 5865 64.1% B 0.264s 4950 54.1% B 0.294s 4022 43.9% B 0.324s 3137 34.3% B 0.355s 2370 25.9% B 0.385s 1683 18.4% B 0.415s 1131 12.4% B 0.445s 687 7.5% B 0.476s 347 3.8% B 0.506s 127 1.4% B 0.536s 12 0.1% B 0.566s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R