CHL Preflight Night 61152
Executing preflight for 61152 at Tue Apr 21 18:25:48 -04 2026.
Log can be found in /atlas/obs/04/61152/preflight.dat.
Setting donefile '/atlas/obs/04/61152/preflight_complete.20260421222548.5091' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260421222548.5091.
Tue Apr 21 18:25:48 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Tue Apr 21 18:25:48 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [e4e4bc03-a1c5-4af8-a752-dd1136166eee;1800]
Tue Apr 21 18:25:48 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Tue Apr 21 18:25:49 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Tue Apr 21 18:25:49 -04 2026 [elapsed=1 sec] auxcam is disabled.
Tue Apr 21 18:25:49 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Tue Apr 21 18:25:49 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776810344
OK
Tue Apr 21 18:25:49 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Tue Apr 21 18:25:49 -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
Tue Apr 21 18:25:50 -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
Tue Apr 21 18:25:51 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Tue Apr 21 18:25:51 -04 2026 [elapsed=3 sec] CLOCKS
admin: Tue Apr 21 22:25:51 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 391 512 377 0.304 -0.017 0.716
+10.0.11.4 .GPS. 1 u 162 512 377 0.584 -0.034 0.744
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 525 1024 377 232.069 -13.301 1.731
-185.125.190.58 99.220.8.133 2 u 913 1024 377 230.870 -11.151 1.063
+alphyn.canonica 132.163.96.1 2 u 103 512 277 149.999 -6.628 1.517
-185.125.190.56 146.131.121.246 2 u 680 1024 377 222.203 -7.106 3.037
Tue Apr 21 18:25:51 -04 2026 [elapsed=3 sec] DISKS
200GB available in /atlas/obs...OK (3863GB)
200GB available in /atlas/red...OK (7528GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.6T 3.7T 64% /
admin:/dev/loop0 106M 106M 0 100% /snap/core/17284
admin:/dev/loop1 106M 106M 0 100% /snap/core/17292
archon:/dev/mapper/ubuntu--vg-ubuntu--lv 58G 20G 36G 36% /
archon:/dev/loop0 106M 106M 0 100% /snap/core/17284
archon:/dev/sda2 974M 321M 586M 36% /boot
archon:/dev/sda1 511M 4.4M 507M 1% /boot/efi
archon:/dev/loop2 106M 106M 0 100% /snap/core/17292
proc1:/dev/md0p1 15T 6.5T 7.2T 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 641G 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
Tue Apr 21 18:25:52 -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
Tue Apr 21 18:25:52 -04 2026 [elapsed=4 sec] Disabling mount tracking.
Tue Apr 21 18:25:52 -04 2026 [elapsed=4 sec] SERVICES2
Tue Apr 21 18:25:52 -04 2026 [elapsed=4 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Tue Apr 21 18:25:56 -04 2026 [elapsed=8 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=1.54e+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
Tue Apr 21 18:29:27 -04 2026 [elapsed=219 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: 114.58 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Tue Apr 21 18:30:32 -04 2026 [elapsed=284 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (10 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.1C)
Checking CCD plane: Z0=-196.00 DZDX=+457.00 DZDY=-421.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] WEATHER
status weather: C 18.6C 42% 5/7kph@332 DP10.7C/-108C/d IDLE
...OK
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] MET
status...OK
met: c=N o=Y Ro7d Co22h Wo16d Ho16d To16d Do16d IDLE
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] SENTRY
status...OK
sentry: close=NO open=YES drop=YES IDLE
Tue Apr 21 18:30:57 -04 2026 [elapsed=309 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 143.26 -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 0.051s 102 1.1%
A 0.081s 379 4.1%
A 0.111s 727 7.9%
A 0.141s 1206 13.2%
A 0.172s 1780 19.4%
A 0.202s 2463 26.9%
A 0.232s 3252 35.5%
A 0.262s 4174 45.6%
A 0.293s 5112 55.8%
A 0.323s 5977 65.3%
A 0.354s 6808 74.4%
A 0.384s 7452 81.4%
A 0.414s 8029 87.7%
A 0.445s 8471 92.5%
A 0.475s 8804 96.2%
A 0.505s 9035 98.7%
A 0.536s 9141 99.9%
A 0.566s 9158 100.0%
B 0.020s 1 0.0%
B 0.050s 91 1.0%
B 0.081s 376 4.1%
B 0.111s 735 8.0%
B 0.142s 1193 13.0%
B 0.172s 1782 19.5%
B 0.202s 2469 27.0%
B 0.233s 3255 35.6%
B 0.263s 4202 45.9%
B 0.293s 5113 55.9%
B 0.324s 6024 65.8%
B 0.354s 6805 74.3%
B 0.384s 7451 81.4%
B 0.415s 8027 87.7%
B 0.445s 8459 92.4%
B 0.475s 8802 96.2%
B 0.505s 9037 98.7%
B 0.536s 9147 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 7965 87.0%
A 0.172s 7367 80.5%
A 0.202s 6691 73.1%
A 0.232s 5895 64.4%
A 0.263s 4978 54.4%
A 0.293s 4053 44.3%
A 0.323s 3161 34.5%
A 0.353s 2382 26.0%
A 0.384s 1711 18.7%
A 0.414s 1138 12.4%
A 0.444s 705 7.7%
A 0.475s 356 3.9%
A 0.505s 131 1.4%
A 0.535s 11 0.1%
A 0.566s -5 0.0%
B 0.020s 9147 99.9%
B 0.050s 9034 98.7%
B 0.081s 8762 95.7%
B 0.111s 8406 91.8%
B 0.141s 7943 86.8%
B 0.172s 7357 80.4%
B 0.202s 6663 72.8%
B 0.232s 5873 64.2%
B 0.263s 4961 54.2%
B 0.293s 4004 43.7%
B 0.323s 3141 34.3%
B 0.354s 2352 25.7%
B 0.384s 1695 18.5%
B 0.414s 1119 12.2%
B 0.445s 662 7.2%
B 0.475s 340 3.7%
B 0.506s 116 1.3%
B 0.536s 3 0.0%
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 0.0 percent in 0.566 seconds.
Shutter B closed to 0.0 percent in 0.536 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 228kB time=00:00:07.29 bitrate= 256.1kbits/s speed=1.18e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9879 IDLE
Tue Apr 21 18:31:31 -04 2026 [elapsed=343 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
taking preflight exposures:
acam...OK
acam image:
157M Apr 21 18:31 /atlas/obs/04a/61152/04a61152e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Tue Apr 21 18:31:54 -04 2026 [elapsed=366 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (79 seconds old)
OTA humidity level...OK (7%)
Dome humidity exists...OK
Dome humidity is current... OK
Tue Apr 21 18:31:54 -04 2026 [elapsed=366 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61151.93882766|info|galildriver|using focus model: foc=9830+(3.50)*20.4+(-0.35)*60.2=9880.3
61151.93883234|info|galildriver|o 3 IN | cass: 6107234 30.54 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53274843 9880 um b=0f [cmd]
bestfocus for o...OK
Tue Apr 21 18:31:56 -04 2026 [elapsed=368 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Tue Apr 21 18:32:29 -04 2026 [elapsed=401 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.
Tue Apr 21 18:32:30 -04 2026 [elapsed=402 sec] Happy observing!
Tue Apr 21 18:32:30 -04 2026 [elapsed=402 sec] Preflight took 402 seconds to complete.
Tue Apr 21 18:32:30 -04 2026 [elapsed=402 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 114 1.2% A 0.081s 385 4.2% A 0.111s 736 8.0% A 0.141s 1196 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 0.292s 5103 55.7% A 0.322s 5969 65.2% A 0.353s 6775 74.0% A 0.383s 7413 81.0% A 0.413s 7989 87.3% A 0.443s 8457 92.4% A 0.474s 8791 96.0% A 0.504s 9022 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 380 4.2% B 0.111s 728 8.0% B 0.141s 1203 13.1% B 0.171s 1774 19.4% B 0.202s 2468 27.0% B 0.232s 3268 35.7% B 0.262s 4167 45.5% B 0.292s 5073 55.4% B 0.322s 5962 65.1% B 0.353s 6750 73.7% B 0.383s 7417 81.0% B 0.413s 7986 87.2% B 0.443s 8441 92.2% B 0.474s 8785 96.0% B 0.504s 9017 98.5% B 0.534s 9136 99.8% B 0.564s 9155 100.0% sleeping 3 sec between shutter moves... A 0.020s 9153 100.0% A 0.050s 9058 99.0% A 0.081s 8788 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 5922 64.7% A 0.262s 5014 54.8% A 0.293s 4068 44.4% A 0.323s 3192 34.9% A 0.353s 2409 26.3% A 0.383s 1731 18.9% A 0.414s 1163 12.7% A 0.444s 706 7.7% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.534s 16 0.2% A 0.565s 2 0.0% B 0.020s 9143 99.9% B 0.050s 9012 98.4% B 0.081s 8761 95.7% B 0.111s 8408 91.9% B 0.141s 7933 86.7% B 0.172s 7357 80.4% B 0.202s 6666 72.8% B 0.232s 5864 64.1% B 0.262s 4952 54.1% B 0.292s 4021 43.9% B 0.323s 3138 34.3% B 0.353s 2368 25.9% B 0.383s 1685 18.4% B 0.413s 1133 12.4% B 0.444s 687 7.5% B 0.474s 348 3.8% B 0.504s 133 1.5% B 0.534s 14 0.2% B 0.565s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R