CHL Preflight Night 61136
Executing preflight for 61136 at Sun Apr 5 17:36:38 -04 2026.
Log can be found in /atlas/obs/04/61136/preflight.dat.
Setting donefile '/atlas/obs/04/61136/preflight_complete.20260405213638.30528' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260405213638.30528.
Sun Apr 5 17:36:39 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sun Apr 5 17:36:39 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [f1725181-160d-483d-8e98-14f6d50ca71f;1800]
Sun Apr 5 17:36:39 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Sun Apr 5 17:36:40 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Sun Apr 5 17:36:40 -04 2026 [elapsed=1 sec] auxcam is disabled.
Sun Apr 5 17:36:40 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sun Apr 5 17:36:40 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775424990
OK
Sun Apr 5 17:36:40 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sun Apr 5 17:36:40 -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
Sun Apr 5 17:36:42 -04 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-04a...OK
proc1 prochain-redpost-04x...OK
Sun Apr 5 17:36:42 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sun Apr 5 17:36:42 -04 2026 [elapsed=3 sec] CLOCKS
admin: Sun Apr 5 21:36:42 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 314 512 377 0.296 0.057 0.055
+10.0.11.4 .GPS. 1 u 31 512 377 0.622 0.186 0.118
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 725 1024 377 220.691 -7.117 1.508
+185.125.190.58 146.131.121.246 2 u 482 512 377 218.786 -5.316 0.329
-alphyn.canonica 132.163.96.1 2 u 395 512 377 163.471 1.939 3.318
-185.125.190.56 146.131.121.246 2 u 863 1024 377 221.271 -6.484 1.552
Sun Apr 5 17:36:44 -04 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (4174GB)
200GB available in /atlas/red...OK (8023GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.3T 4.0T 61% /
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 6.0T 7.7T 44% /
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 442G 13T 4% /
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 691G 13T 6% /
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Sun Apr 5 17:36:45 -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
Sun Apr 5 17:36:45 -04 2026 [elapsed=6 sec] Disabling mount tracking.
Sun Apr 5 17:36:45 -04 2026 [elapsed=6 sec] SERVICES2
Sun Apr 5 17:36:45 -04 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sun Apr 5 17:36:49 -04 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= 912kB time=00:00:29.18 bitrate= 256.0kbits/s speed=1.33e+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
Sun Apr 5 17:40:12 -04 2026 [elapsed=213 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: 86.46 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Sun Apr 5 17:41:18 -04 2026 [elapsed=279 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sun Apr 5 17:41:42 -04 2026 [elapsed=303 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=787/0 spi=40.4 IDLE
Sun Apr 5 17:41:42 -04 2026 [elapsed=303 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 (-53.7C)
Checking CCD plane: Z0=-198.00 DZDX=+459.00 DZDY=-415.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=787 IDLE
Sun Apr 5 17:41:42 -04 2026 [elapsed=303 sec] WEATHER
status weather: C 24.5C 28% 9/14kph@278 DP19.2C/-40C/d IDLE
...OK
Sun Apr 5 17:41:43 -04 2026 [elapsed=304 sec] MET
status...OK
met: c=N o=Y Ro17h Co17h Wo17h Ho17h To17h Do17h IDLE
Sun Apr 5 17:41:43 -04 2026 [elapsed=304 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sun Apr 5 17:41:43 -04 2026 [elapsed=304 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 115.14 -12.93, az/alt=59.87 +60.08 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 -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 10 0.1%
A 0.050s 114 1.2%
A 0.081s 396 4.3%
A 0.111s 741 8.1%
A 0.142s 1225 13.4%
A 0.172s 1796 19.6%
A 0.202s 2488 27.2%
A 0.233s 3282 35.9%
A 0.263s 4235 46.3%
A 0.294s 5172 56.5%
A 0.324s 6035 65.9%
A 0.355s 6828 74.6%
A 0.385s 7470 81.6%
A 0.415s 8045 87.9%
A 0.446s 8485 92.7%
A 0.476s 8813 96.3%
A 0.506s 9039 98.7%
A 0.537s 9140 99.8%
A 0.567s 9156 100.0%
B 0.020s 2 0.0%
B 0.051s 95 1.0%
B 0.081s 386 4.2%
B 0.111s 750 8.2%
B 0.142s 1207 13.2%
B 0.172s 1803 19.7%
B 0.202s 2493 27.2%
B 0.233s 3308 36.1%
B 0.263s 4232 46.2%
B 0.294s 5174 56.5%
B 0.324s 6050 66.1%
B 0.354s 6824 74.5%
B 0.384s 7470 81.6%
B 0.415s 8042 87.9%
B 0.445s 8483 92.7%
B 0.475s 8810 96.2%
B 0.506s 9042 98.8%
B 0.536s 9148 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9153 100.0%
A 0.051s 9062 99.0%
A 0.081s 8778 95.9%
A 0.111s 8427 92.1%
A 0.141s 7965 87.0%
A 0.172s 7387 80.7%
A 0.202s 6690 73.1%
A 0.232s 5894 64.4%
A 0.263s 4979 54.4%
A 0.293s 4052 44.3%
A 0.323s 3161 34.5%
A 0.354s 2383 26.0%
A 0.384s 1712 18.7%
A 0.414s 1139 12.4%
A 0.444s 704 7.7%
A 0.475s 356 3.9%
A 0.505s 131 1.4%
A 0.535s 10 0.1%
A 0.566s -4 0.0%
B 0.020s 9149 99.9%
B 0.050s 9039 98.7%
B 0.081s 8772 95.8%
B 0.111s 8417 91.9%
B 0.141s 7960 87.0%
B 0.172s 7378 80.6%
B 0.202s 6686 73.0%
B 0.232s 5897 64.4%
B 0.263s 4990 54.5%
B 0.293s 4006 43.8%
B 0.323s 3167 34.6%
B 0.354s 2351 25.7%
B 0.384s 1697 18.5%
B 0.414s 1135 12.4%
B 0.445s 674 7.4%
B 0.475s 351 3.8%
B 0.505s 121 1.3%
B 0.535s 5 0.1%
A 0 0.0mm 15 N F R | B -2 -0.1mm 15 N F R
---------------------------------------------------
Evaluating shutter behavior:
Shutter A opened to 100.0 percent in 0.567 seconds.
Shutter B opened to 99.9 percent in 0.536 seconds.
Shutter A closed to 0.0 percent in 0.566 seconds.
Shutter B closed to 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 230kB time=00:00:07.36 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=9890 IDLE
Sun Apr 5 17:42:20 -04 2026 [elapsed=341 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=787/0 spi=40.4 IDLE
taking preflight exposures:
acam...OK
acam image:
158M Apr 5 17:42 /atlas/obs/04a/61136/04a61136e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sun Apr 5 17:42:43 -04 2026 [elapsed=364 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (7 seconds old)
OTA humidity level...OK (8%)
Dome humidity exists...OK
Dome humidity is current... OK
Sun Apr 5 17:42:43 -04 2026 [elapsed=364 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61135.90466873|info|galildriver|using focus model: foc=9830+(3.50)*23.4+(-0.35)*60.3=9890.8
61135.90467340|info|galildriver|o 3 IN | cass: 6105185 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53272692 9891 um b=0f [cmd]
bestfocus for o...OK
Sun Apr 5 17:42:44 -04 2026 [elapsed=365 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sun Apr 5 17:43:17 -04 2026 [elapsed=398 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.
Sun Apr 5 17:43:19 -04 2026 [elapsed=400 sec] Happy observing!
Sun Apr 5 17:43:19 -04 2026 [elapsed=400 sec] Preflight took 400 seconds to complete.
Sun Apr 5 17:43:19 -04 2026 [elapsed=400 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 0.050s 122 1.3% A 0.081s 383 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1780 19.4% A 0.202s 2465 26.9% A 0.232s 3267 35.7% A 0.262s 4175 45.6% A 0.292s 5102 55.7% A 0.322s 5997 65.5% A 0.353s 6775 74.0% A 0.383s 7433 81.2% A 0.413s 8006 87.5% A 0.443s 8458 92.4% A 0.474s 8793 96.1% A 0.504s 9028 98.6% A 0.534s 9138 99.8% A 0.564s 9154 100.0% B 0.020s 2 0.0% B 0.050s 110 1.2% B 0.081s 379 4.1% B 0.111s 728 8.0% B 0.141s 1203 13.1% B 0.171s 1775 19.4% B 0.201s 2468 27.0% B 0.232s 3267 35.7% B 0.262s 4135 45.2% B 0.292s 5103 55.7% B 0.322s 5962 65.1% B 0.353s 6750 73.7% B 0.383s 7417 81.0% B 0.413s 7984 87.2% B 0.443s 8444 92.2% B 0.474s 8784 96.0% B 0.504s 9018 98.5% B 0.534s 9132 99.8% B 0.564s 9154 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9056 98.9% A 0.081s 8788 96.0% A 0.111s 8434 92.1% A 0.141s 7975 87.1% A 0.171s 7401 80.8% A 0.202s 6715 73.4% A 0.232s 5923 64.7% A 0.262s 5013 54.8% A 0.293s 4069 44.5% A 0.323s 3191 34.9% A 0.353s 2411 26.3% A 0.383s 1730 18.9% A 0.414s 1162 12.7% A 0.444s 706 7.7% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.535s 16 0.2% A 0.565s 2 0.0% B 0.020s 9150 100.0% B 0.050s 9027 98.6% B 0.081s 8779 95.9% B 0.111s 8435 92.1% B 0.141s 7967 87.0% B 0.171s 7400 80.8% B 0.201s 6712 73.3% B 0.232s 5923 64.7% B 0.262s 5043 55.1% B 0.292s 4083 44.6% B 0.322s 3219 35.2% B 0.352s 2439 26.6% B 0.383s 1745 19.1% B 0.413s 1178 12.9% B 0.443s 725 7.9% B 0.473s 374 4.1% B 0.503s 144 1.6% B 0.534s 17 0.2% B 0.564s 0 0.0% A 1 0.0mm 15 N F R | B 0 0.0mm 15 N F R