CHL Preflight Night 61146
Executing preflight for 61146 at Wed Apr 15 20:30:13 -04 2026.
Log can be found in /atlas/obs/04/61146/preflight.dat.
Setting donefile '/atlas/obs/04/61146/preflight_complete.20260416003013.28119' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260416003013.28119.
Wed Apr 15 20:30:13 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Wed Apr 15 20:30:13 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [7d4fc4ca-5eae-4cf7-bcad-2d2c07e2f053;1800]
Wed Apr 15 20:30:13 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Wed Apr 15 20:30:14 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Wed Apr 15 20:30:14 -04 2026 [elapsed=1 sec] auxcam is disabled.
Wed Apr 15 20:30:14 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Wed Apr 15 20:30:14 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776299404
OK
Wed Apr 15 20:30:14 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Wed Apr 15 20:30:14 -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
Wed Apr 15 20:30:16 -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
Wed Apr 15 20:30:16 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Wed Apr 15 20:30:16 -04 2026 [elapsed=3 sec] CLOCKS
admin: Thu Apr 16 00:30:16 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 824 1024 377 0.305 -2.480 1.502
+10.0.11.4 .GPS. 1 u 539 1024 377 0.633 -2.282 1.392
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 87 1024 377 217.864 -7.829 1.737
+185.125.190.58 99.220.8.133 2 u 809 1024 377 233.112 -14.045 9.356
-alphyn.canonica 132.163.96.1 2 u 722 1024 377 145.999 -6.174 2.061
-185.125.190.56 146.131.121.246 2 u 986 1024 377 218.282 -7.512 2.088
Wed Apr 15 20:30:17 -04 2026 [elapsed=4 sec] DISKS
200GB available in /atlas/obs...OK (3987GB)
200GB available in /atlas/red...OK (7830GB)
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 6.2T 7.5T 46% /
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 444G 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 903G 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
Wed Apr 15 20:30:17 -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
Wed Apr 15 20:30:17 -04 2026 [elapsed=4 sec] Disabling mount tracking.
Wed Apr 15 20:30:17 -04 2026 [elapsed=4 sec] SERVICES2
Wed Apr 15 20:30:17 -04 2026 [elapsed=4 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Wed Apr 15 20:30:21 -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= 912kB time=00:00:29.18 bitrate= 256.0kbits/s speed=1.57e+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
Wed Apr 15 20:33:40 -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: 139.80 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Wed Apr 15 20:34:45 -04 2026 [elapsed=272 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=937/0 spi=38.7 IDLE
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (0 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-53.9C)
Checking CCD plane: Z0=-196.00 DZDX=+469.00 DZDY=-414.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=937 IDLE
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] WEATHER
status weather: clear 19.2C 37% 5/6kph@320 DP13.9C/-48C/d IDLE
...OK
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] MET
status...OK
met: c=N o=Y Ro1d Co1d Wo10d Ho10d To10d Do10d IDLE
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] SENTRY
status...OK
sentry: close=NO open=YES drop=YES IDLE
Wed Apr 15 20:35:10 -04 2026 [elapsed=297 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 168.48 -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 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 109 1.2%
A 0.081s 395 4.3%
A 0.111s 742 8.1%
A 0.142s 1225 13.4%
A 0.172s 1797 19.6%
A 0.202s 2491 27.2%
A 0.233s 3284 35.9%
A 0.263s 4193 45.8%
A 0.293s 5144 56.2%
A 0.324s 6014 65.7%
A 0.354s 6803 74.3%
A 0.384s 7449 81.4%
A 0.415s 8025 87.7%
A 0.445s 8469 92.5%
A 0.476s 8805 96.2%
A 0.506s 9040 98.8%
A 0.536s 9143 99.9%
A 0.566s 9158 100.0%
B 0.020s 1 0.0%
B 0.050s 89 1.0%
B 0.081s 375 4.1%
B 0.111s 747 8.2%
B 0.142s 1208 13.2%
B 0.172s 1802 19.7%
B 0.202s 2492 27.2%
B 0.232s 3280 35.8%
B 0.263s 4199 45.9%
B 0.293s 5144 56.2%
B 0.323s 6022 65.8%
B 0.354s 6802 74.3%
B 0.384s 7450 81.4%
B 0.414s 8026 87.7%
B 0.445s 8471 92.5%
B 0.475s 8801 96.1%
B 0.505s 9037 98.7%
B 0.536s 9147 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9153 100.0%
A 0.051s 9052 98.9%
A 0.081s 8762 95.7%
A 0.111s 8418 92.0%
A 0.142s 7949 86.8%
A 0.172s 7347 80.3%
A 0.202s 6668 72.8%
A 0.233s 5868 64.1%
A 0.263s 4946 54.0%
A 0.294s 4025 44.0%
A 0.324s 3137 34.3%
A 0.354s 2363 25.8%
A 0.385s 1691 18.5%
A 0.415s 1106 12.1%
A 0.445s 678 7.4%
A 0.476s 337 3.7%
A 0.506s 122 1.3%
A 0.536s 6 0.1%
B 0.020s 9150 100.0%
B 0.051s 9049 98.9%
B 0.081s 8784 96.0%
B 0.111s 8431 92.1%
B 0.141s 7979 87.2%
B 0.172s 7398 80.8%
B 0.202s 6712 73.3%
B 0.232s 5926 64.7%
B 0.263s 5020 54.8%
B 0.293s 4066 44.4%
B 0.323s 3197 34.9%
B 0.354s 2397 26.2%
B 0.384s 1717 18.8%
B 0.414s 1152 12.6%
B 0.445s 684 7.5%
B 0.475s 359 3.9%
B 0.505s 127 1.4%
B 0.536s 5 0.1%
A 1 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=1.04e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9886 IDLE
Wed Apr 15 20:35:46 -04 2026 [elapsed=333 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=937/0 spi=38.7 IDLE
taking preflight exposures:
acam...OK
acam image:
158M Apr 15 20:36 /atlas/obs/04a/61146/04a61146e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Wed Apr 15 20:36:09 -04 2026 [elapsed=356 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (63 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Wed Apr 15 20:36:09 -04 2026 [elapsed=356 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61146.02510929|info|galildriver|using focus model: foc=9830+(3.50)*21.2+(-0.35)*60.2=9883.1
61146.02511430|info|galildriver|o 3 IN | cass: 6106482 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53273603 9886 um b=8f M [focus]
61146.02512445|info|galildriver|o 3 IN | cass: 6106487 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53273829 9885 um b=0f [cmd]
bestfocus for o...OK
Wed Apr 15 20:36:11 -04 2026 [elapsed=358 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Wed Apr 15 20:36:44 -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.
Wed Apr 15 20:36:46 -04 2026 [elapsed=393 sec] Happy observing!
Wed Apr 15 20:36:46 -04 2026 [elapsed=393 sec] Preflight took 393 seconds to complete.
Wed Apr 15 20:36:46 -04 2026 [elapsed=393 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