CHL Preflight Night 61147
Executing preflight for 61147 at Thu Apr 16 17:24:07 -04 2026.
Log can be found in /atlas/obs/04/61147/preflight.dat.
Setting donefile '/atlas/obs/04/61147/preflight_complete.20260416212407.28119' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260416212407.28119.
Thu Apr 16 17:24:07 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Thu Apr 16 17:24:07 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [6b95f74a-9986-4e5f-991f-5ce2db705ea8;1800]
Thu Apr 16 17:24:07 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Thu Apr 16 17:24:08 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Thu Apr 16 17:24:08 -04 2026 [elapsed=1 sec] auxcam is disabled.
Thu Apr 16 17:24:08 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Thu Apr 16 17:24:08 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776374644
OK
Thu Apr 16 17:24:08 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Thu Apr 16 17:24:08 -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
Thu Apr 16 17:24:09 -04 2026 [elapsed=2 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
Thu Apr 16 17:24:10 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Thu Apr 16 17:24:10 -04 2026 [elapsed=3 sec] CLOCKS
admin: Thu Apr 16 21:24:10 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 333 512 377 0.272 0.012 0.419
*10.0.11.4 .GPS. 1 u 282 512 377 0.630 -0.198 0.685
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 357 1024 377 221.526 -7.739 4.695
-185.125.190.58 99.220.8.133 2 u 292 1024 377 224.959 -8.165 1.149
+alphyn.canonica 132.163.96.1 2 u 126 512 377 143.781 -2.176 2.868
-185.125.190.56 146.131.121.246 2 u 90 1024 377 224.949 -8.171 0.834
Thu Apr 16 17:24:12 -04 2026 [elapsed=5 sec] DISKS
200GB available in /atlas/obs...OK (3984GB)
200GB available in /atlas/red...OK (7646GB)
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 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 7.3T 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 614G 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
Thu Apr 16 17:24:12 -04 2026 [elapsed=5 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
Thu Apr 16 17:24:12 -04 2026 [elapsed=5 sec] Disabling mount tracking.
Thu Apr 16 17:24:12 -04 2026 [elapsed=5 sec] SERVICES2
Thu Apr 16 17:24:12 -04 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Thu Apr 16 17:24:16 -04 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= 914kB time=00:00:29.24 bitrate= 256.0kbits/s speed=1.58e+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
Thu Apr 16 17:27:34 -04 2026 [elapsed=207 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: 94.14 -27.58, az/alt=324.56 +86.48 idle(e) IDLE
Thu Apr 16 17:28:40 -04 2026 [elapsed=273 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Thu Apr 16 17:29:05 -04 2026 [elapsed=298 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=10/0 spi=46.6 IDLE
Thu Apr 16 17:29:05 -04 2026 [elapsed=298 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 (-53.7C)
Checking CCD plane: Z0=-198.00 DZDX=+463.00 DZDY=-415.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=10 IDLE
Thu Apr 16 17:29:05 -04 2026 [elapsed=298 sec] WEATHER
status weather: C 24.9C 30% 10/15kph@285 DP13.9C/-186C/d IDLE
...OK
Thu Apr 16 17:29:06 -04 2026 [elapsed=299 sec] MET
status...OK
met: c=N o=Y Ro2d Co1d Wo11d Ho11d To11d Do11d IDLE
Thu Apr 16 17:29:06 -04 2026 [elapsed=299 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Thu Apr 16 17:29:06 -04 2026 [elapsed=299 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 122.82 -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 -1 0.0%
A 1 0.0mm 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 99 1.1%
A 0.081s 373 4.1%
A 0.111s 714 7.8%
A 0.141s 1190 13.0%
A 0.172s 1760 19.2%
A 0.202s 2443 26.7%
A 0.232s 3231 35.3%
A 0.263s 4166 45.5%
A 0.293s 5109 55.8%
A 0.323s 5982 65.3%
A 0.354s 6787 74.1%
A 0.384s 7431 81.2%
A 0.414s 8007 87.5%
A 0.445s 8456 92.4%
A 0.475s 8792 96.0%
A 0.505s 9028 98.6%
A 0.536s 9139 99.8%
A 0.566s 9157 100.0%
B 0.020s 4 0.0%
B 0.050s 96 1.0%
B 0.081s 388 4.2%
B 0.111s 749 8.2%
B 0.141s 1208 13.2%
B 0.171s 1804 19.7%
B 0.202s 2493 27.2%
B 0.232s 3281 35.8%
B 0.262s 4203 45.9%
B 0.293s 5144 56.2%
B 0.323s 6024 65.8%
B 0.353s 6805 74.3%
B 0.383s 7450 81.4%
B 0.414s 8028 87.7%
B 0.444s 8472 92.5%
B 0.474s 8802 96.2%
B 0.505s 9037 98.7%
B 0.535s 9145 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.050s 9054 98.9%
A 0.081s 8769 95.8%
A 0.111s 8429 92.1%
A 0.141s 7966 87.0%
A 0.172s 7370 80.5%
A 0.202s 6693 73.1%
A 0.232s 5893 64.4%
A 0.263s 4977 54.4%
A 0.293s 4055 44.3%
A 0.323s 3166 34.6%
A 0.354s 2382 26.0%
A 0.384s 1689 18.5%
A 0.414s 1124 12.3%
A 0.445s 691 7.5%
A 0.475s 347 3.8%
A 0.505s 126 1.4%
A 0.536s 10 0.1%
A 0.566s -5 0.0%
B 0.020s 9148 99.9%
B 0.051s 9040 98.8%
B 0.081s 8772 95.8%
B 0.112s 8417 91.9%
B 0.142s 7943 86.8%
B 0.172s 7356 80.4%
B 0.203s 6687 73.1%
B 0.233s 5873 64.2%
B 0.263s 4959 54.2%
B 0.294s 4006 43.8%
B 0.324s 3141 34.3%
B 0.354s 2351 25.7%
B 0.385s 1698 18.5%
B 0.415s 1135 12.4%
B 0.445s 674 7.4%
B 0.476s 352 3.8%
B 0.506s 121 1.3%
B 0.537s 4 0.0%
A 0 0.0mm 15 N F R | B -1 -0.0mm 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 0.0 percent in 0.537 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.25e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9891 IDLE
Thu Apr 16 17:29:40 -04 2026 [elapsed=333 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=10/0 spi=46.6 IDLE
taking preflight exposures:
acam...OK
acam image:
160M Apr 16 17:29 /atlas/obs/04a/61147/04a61147e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Thu Apr 16 17:30:03 -04 2026 [elapsed=356 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (57 seconds old)
OTA humidity level...OK (8%)
Dome humidity exists...OK
Dome humidity is current... OK
Thu Apr 16 17:30:03 -04 2026 [elapsed=356 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61146.89587480|info|galildriver|using focus model: foc=9830+(3.50)*23.8+(-0.35)*60.2=9892.2
61146.89587947|info|galildriver|o 3 IN | cass: 6104847 30.52 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53272461 9892 um b=0f [cmd]
bestfocus for o...OK
Thu Apr 16 17:30:04 -04 2026 [elapsed=357 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Thu Apr 16 17:30:38 -04 2026 [elapsed=391 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.
Thu Apr 16 17:30:39 -04 2026 [elapsed=392 sec] Happy observing!
Thu Apr 16 17:30:39 -04 2026 [elapsed=392 sec] Preflight took 392 seconds to complete.
Thu Apr 16 17:30:39 -04 2026 [elapsed=392 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 0.051s 114 1.2% A 0.081s 386 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1783 19.5% A 0.202s 2466 26.9% A 0.232s 3266 35.7% A 0.262s 4174 45.6% A 0.292s 5104 55.8% A 0.322s 5997 65.5% A 0.353s 6775 74.0% A 0.383s 7434 81.2% A 0.413s 7989 87.3% A 0.443s 8444 92.2% A 0.474s 8781 95.9% A 0.504s 9022 98.6% A 0.534s 9135 99.8% A 0.564s 9153 100.0% B 0.020s 2 0.0% B 0.050s 102 1.1% B 0.080s 371 4.1% B 0.111s 714 7.8% B 0.141s 1185 12.9% B 0.171s 1754 19.2% B 0.201s 2444 26.7% B 0.231s 3239 35.4% B 0.262s 4137 45.2% B 0.292s 5072 55.4% B 0.322s 5962 65.1% B 0.352s 6748 73.7% B 0.383s 7418 81.0% B 0.413s 7985 87.2% B 0.443s 8443 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 9151 100.0% A 0.050s 9044 98.8% A 0.081s 8767 95.8% A 0.111s 8407 91.8% A 0.141s 7957 86.9% A 0.171s 7379 80.6% A 0.202s 6692 73.1% A 0.232s 5893 64.4% A 0.262s 4982 54.4% A 0.292s 4039 44.1% A 0.322s 3165 34.6% A 0.353s 2386 26.1% A 0.383s 1711 18.7% A 0.413s 1147 12.5% A 0.443s 694 7.6% A 0.474s 358 3.9% A 0.504s 126 1.4% A 0.534s 14 0.2% A 0.565s 1 0.0% B 0.020s 9145 99.9% B 0.050s 9018 98.5% B 0.081s 8771 95.8% B 0.111s 8420 92.0% B 0.141s 7935 86.7% B 0.171s 7357 80.4% B 0.202s 6690 73.1% B 0.232s 5892 64.4% B 0.262s 4952 54.1% B 0.293s 4051 44.3% B 0.323s 3163 34.6% B 0.353s 2392 26.1% B 0.383s 1706 18.6% B 0.414s 1149 12.6% B 0.444s 700 7.6% B 0.474s 357 3.9% B 0.504s 133 1.5% B 0.534s 14 0.2% B 0.565s 0 0.0% A 0 0.0mm 15 N F R | B 0 0.0mm 15 N F R