CHL Preflight Night 61151
Executing preflight for 61151 at Mon Apr 20 17:19:54 -04 2026.
Log can be found in /atlas/obs/04/61151/preflight.dat.
Setting donefile '/atlas/obs/04/61151/preflight_complete.20260420211954.28119' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260420211954.28119.
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [6f3f91dc-7203-49ed-a759-79ebb6c0ecad;1800]
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] auxcam is disabled.
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776719993
OK
Mon Apr 20 17:19:55 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Mon Apr 20 17:19:55 -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
Mon Apr 20 17:19:57 -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
Mon Apr 20 17:19:57 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Mon Apr 20 17:19:57 -04 2026 [elapsed=3 sec] CLOCKS
admin: Mon Apr 20 21:19:57 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 753 1024 377 0.301 1.217 0.902
*10.0.11.4 .GPS. 1 u 422 1024 377 0.554 1.357 0.781
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 855 1024 377 215.726 -3.111 1.731
-185.125.190.58 99.220.8.133 2 u 812 1024 337 219.380 -4.013 3.445
-alphyn.canonica 132.163.96.1 2 u 591 1024 373 148.787 -3.583 3.821
+185.125.190.56 146.131.121.246 2 u 38 1024 377 217.900 -2.963 3.114
Mon Apr 20 17:19:58 -04 2026 [elapsed=4 sec] DISKS
200GB available in /atlas/obs...OK (3884GB)
200GB available in /atlas/red...OK (7578GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.5T 3.8T 64% /
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 36G 36% /
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 6.5T 7.3T 48% /
proc1:/dev/sda1 511M 6.7M 505M 2% /boot/efi
proc1:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc1:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc2:/dev/md0p1 15T 636G 13T 5% /
proc2:/dev/loop1 106M 106M 0 100% /snap/core/17284
proc2:/dev/loop0 106M 106M 0 100% /snap/core/17292
proc3:/dev/md0p1 15T 902G 13T 7% /
proc3:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc3:/dev/loop1 106M 106M 0 100% /snap/core/17292
proc4:/dev/md0p1 15T 692G 13T 6% /
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
proc4:/dev/loop1 106M 106M 0 100% /snap/core/17292
Mon Apr 20 17:19:58 -04 2026 [elapsed=4 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
Mon Apr 20 17:19:59 -04 2026 [elapsed=5 sec] Disabling mount tracking.
Mon Apr 20 17:19:59 -04 2026 [elapsed=5 sec] Closing dome.
Mon Apr 20 17:20:17 -04 2026 [elapsed=23 sec] SERVICES2
Mon Apr 20 17:20:17 -04 2026 [elapsed=23 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon Apr 20 17:20:21 -04 2026 [elapsed=27 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= 910kB time=00:00:29.12 bitrate= 256.0kbits/s speed=1.56e+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
Mon Apr 20 17:23:40 -04 2026 [elapsed=226 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: 97.11 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Mon Apr 20 17:24:47 -04 2026 [elapsed=293 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon Apr 20 17:25:11 -04 2026 [elapsed=317 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=611/0 spi=38.8 IDLE
Mon Apr 20 17:25:11 -04 2026 [elapsed=317 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (9 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=+461.00 DZDY=-417.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=611 IDLE
Mon Apr 20 17:25:11 -04 2026 [elapsed=317 sec] WEATHER
status weather: C 22.5C 31% 11/14kph@270 DP16.1C/-71C/d IDLE
...OK
Mon Apr 20 17:25:12 -04 2026 [elapsed=318 sec] MET
status...OK
met: c=N o=N Ro6d Cx0 Wo15d Ho15d To15d Do15d wait C IDLE
Mon Apr 20 17:25:12 -04 2026 [elapsed=318 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon Apr 20 17:25:12 -04 2026 [elapsed=318 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 125.78 -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 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 10 0.1%
A 0.051s 106 1.2%
A 0.081s 388 4.2%
A 0.111s 741 8.1%
A 0.142s 1225 13.4%
A 0.172s 1803 19.7%
A 0.202s 2492 27.2%
A 0.233s 3280 35.8%
A 0.263s 4199 45.9%
A 0.293s 5141 56.2%
A 0.324s 6010 65.7%
A 0.354s 6809 74.4%
A 0.384s 7452 81.4%
A 0.415s 8021 87.6%
A 0.445s 8472 92.5%
A 0.475s 8802 96.2%
A 0.506s 9040 98.8%
A 0.536s 9142 99.9%
A 0.566s 9157 100.0%
B 0.020s 3 0.0%
B 0.051s 89 1.0%
B 0.081s 375 4.1%
B 0.111s 737 8.1%
B 0.141s 1192 13.0%
B 0.172s 1782 19.5%
B 0.202s 2470 27.0%
B 0.232s 3255 35.6%
B 0.263s 4170 45.6%
B 0.293s 5115 55.9%
B 0.323s 5997 65.5%
B 0.353s 6780 74.1%
B 0.384s 7432 81.2%
B 0.414s 8027 87.7%
B 0.445s 8471 92.5%
B 0.475s 8802 96.2%
B 0.506s 9036 98.7%
B 0.536s 9147 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.051s 9047 98.8%
A 0.081s 8760 95.7%
A 0.111s 8421 92.0%
A 0.142s 7948 86.8%
A 0.172s 7350 80.3%
A 0.202s 6667 72.8%
A 0.233s 5863 64.0%
A 0.263s 4950 54.1%
A 0.293s 4026 44.0%
A 0.324s 3139 34.3%
A 0.354s 2362 25.8%
A 0.384s 1686 18.4%
A 0.415s 1123 12.3%
A 0.445s 679 7.4%
A 0.476s 339 3.7%
A 0.506s 124 1.4%
A 0.536s 7 0.1%
B 0.020s 9150 100.0%
B 0.050s 9047 98.8%
B 0.081s 8783 95.9%
B 0.111s 8430 92.1%
B 0.142s 7959 86.9%
B 0.172s 7376 80.6%
B 0.202s 6711 73.3%
B 0.232s 5899 64.4%
B 0.263s 4989 54.5%
B 0.293s 4036 44.1%
B 0.323s 3168 34.6%
B 0.354s 2371 25.9%
B 0.384s 1717 18.8%
B 0.415s 1154 12.6%
B 0.445s 685 7.5%
B 0.476s 351 3.8%
B 0.506s 121 1.3%
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 0.536 seconds.
Shutter A closed to 0.1 percent in 0.536 seconds.
Shutter B closed to 0.1 percent in 0.536 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 228kB time=00:00:07.29 bitrate= 256.1kbits/s speed=1.12e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9881 IDLE
Mon Apr 20 17:25:48 -04 2026 [elapsed=354 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=611/0 spi=38.8 IDLE
taking preflight exposures:
acam...OK
acam image:
160M Apr 20 17:26 /atlas/obs/04a/61151/04a61151e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon Apr 20 17:26:10 -04 2026 [elapsed=376 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (4 seconds old)
OTA humidity level...OK (7%)
Dome humidity exists...OK
Dome humidity is current... OK
Mon Apr 20 17:26:10 -04 2026 [elapsed=376 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61150.89318137|info|galildriver|using focus model: foc=9830+(3.50)*20.6+(-0.35)*60.2=9881.0
61150.89318605|info|galildriver|o 3 IN | cass: 6106714 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53274554 9881 um b=0f [cmd]
bestfocus for o...OK
Mon Apr 20 17:26:11 -04 2026 [elapsed=377 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon Apr 20 17:26:45 -04 2026 [elapsed=411 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.
Mon Apr 20 17:26:46 -04 2026 [elapsed=412 sec] Happy observing!
Mon Apr 20 17:26:46 -04 2026 [elapsed=412 sec] Preflight took 411 seconds to complete.
Mon Apr 20 17:26:46 -04 2026 [elapsed=412 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 3 0.0% A 0.050s 115 1.3% A 0.081s 385 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1782 19.5% A 0.202s 2466 26.9% A 0.232s 3267 35.7% A 0.262s 4173 45.6% A 0.293s 5104 55.8% A 0.323s 5997 65.5% A 0.353s 6775 74.0% A 0.383s 7434 81.2% A 0.413s 8005 87.4% A 0.444s 8457 92.4% A 0.474s 8791 96.0% A 0.504s 9027 98.6% A 0.534s 9137 99.8% A 0.564s 9153 100.0% B 0.020s 2 0.0% B 0.050s 110 1.2% B 0.081s 381 4.2% B 0.111s 727 7.9% B 0.141s 1203 13.1% B 0.171s 1774 19.4% B 0.202s 2467 26.9% B 0.232s 3240 35.4% B 0.262s 4136 45.2% B 0.292s 5074 55.4% B 0.322s 5963 65.1% B 0.353s 6749 73.7% B 0.383s 7418 81.0% B 0.413s 7985 87.2% B 0.443s 8442 92.2% B 0.474s 8785 96.0% B 0.504s 9017 98.5% B 0.534s 9136 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9058 99.0% A 0.081s 8787 96.0% A 0.111s 8433 92.1% A 0.141s 7975 87.1% A 0.172s 7400 80.8% A 0.202s 6715 73.4% A 0.232s 5921 64.7% A 0.262s 5013 54.8% A 0.293s 4069 44.5% A 0.323s 3192 34.9% A 0.353s 2409 26.3% A 0.384s 1732 18.9% A 0.414s 1164 12.7% A 0.444s 706 7.7% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.535s 15 0.2% A 0.565s 2 0.0% B 0.020s 9147 99.9% B 0.050s 9024 98.6% B 0.081s 8781 95.9% B 0.111s 8433 92.1% B 0.141s 7968 87.0% B 0.171s 7398 80.8% B 0.202s 6713 73.3% B 0.232s 5922 64.7% B 0.262s 5011 54.7% B 0.292s 4081 44.6% B 0.323s 3191 34.9% B 0.353s 2414 26.4% B 0.383s 1725 18.8% B 0.413s 1166 12.7% B 0.443s 712 7.8% B 0.474s 367 4.0% B 0.504s 144 1.6% B 0.534s 16 0.2% B 0.564s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R