CHL Preflight Night 61074
Executing preflight for 61074 at Mon Feb 2 19:43:33 -03 2026.
Log can be found in /atlas/obs/04/61074/preflight.dat.
Setting donefile '/atlas/obs/04/61074/preflight_complete.20260202224333.22499' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260202224333.22499.
Mon Feb 2 19:43:33 -03 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon Feb 2 19:43:33 -03 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [2fa1ad32-ea88-44c0-937c-8f05c46528d6;1800]
Mon Feb 2 19:43:33 -03 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Mon Feb 2 19:43:34 -03 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Mon Feb 2 19:43:34 -03 2026 [elapsed=1 sec] auxcam is disabled.
Mon Feb 2 19:43:34 -03 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Mon Feb 2 19:43:34 -03 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1770072205
OK
Mon Feb 2 19:43:34 -03 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Mon Feb 2 19:43:34 -03 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 Feb 2 19:43:35 -03 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
Mon Feb 2 19:43:36 -03 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Mon Feb 2 19:43:36 -03 2026 [elapsed=3 sec] CLOCKS
admin: Mon Feb 2 22:43:36 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 353 512 377 0.306 0.215 0.144
+10.0.11.4 .GPS. 1 u 164 512 377 0.440 0.486 0.105
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 194.121.207.249 2 u 105 1024 377 222.009 -6.908 1.188
-185.125.190.58 183.160.133.132 2 u 873 1024 377 221.948 -5.997 1.658
+alphyn.canonica 132.163.96.1 2 u 120 512 373 150.112 -3.087 2.638
-185.125.190.56 194.121.207.249 2 u 863 1024 377 221.979 -6.180 0.543
Mon Feb 2 19:43:36 -03 2026 [elapsed=3 sec] DISKS
200GB available in /atlas/obs...OK (5402GB)
200GB available in /atlas/red...OK (9324GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 5.1T 5.2T 50% /
admin:/dev/loop1 105M 105M 0 100% /snap/core/17247
admin:/dev/loop2 105M 105M 0 100% /snap/core/17272
archon:/dev/mapper/ubuntu--vg-ubuntu--lv 58G 20G 35G 37% /
archon:/dev/loop0 105M 105M 0 100% /snap/core/17247
archon:/dev/sda2 974M 321M 586M 36% /boot
archon:/dev/sda1 511M 4.4M 507M 1% /boot/efi
archon:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc1:/dev/md0p1 15T 4.8T 8.9T 35% /
proc1:/dev/loop0 105M 105M 0 100% /snap/core/17247
proc1:/dev/sda1 511M 6.7M 505M 2% /boot/efi
proc1:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc2:/dev/md0p1 15T 434G 13T 4% /
proc2:/dev/loop0 105M 105M 0 100% /snap/core/17247
proc2:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc3:/dev/md0p1 15T 901G 13T 7% /
proc3:/dev/loop1 105M 105M 0 100% /snap/core/17247
proc3:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/md0p1 15T 691G 13T 6% /
proc4:/dev/loop1 105M 105M 0 100% /snap/core/17247
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
Mon Feb 2 19:43:37 -03 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 Feb 2 19:43:37 -03 2026 [elapsed=4 sec] Disabling mount tracking.
Mon Feb 2 19:43:37 -03 2026 [elapsed=4 sec] SERVICES2
Mon Feb 2 19:43:37 -03 2026 [elapsed=4 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon Feb 2 19:43:41 -03 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= 910kB time=00:00:29.12 bitrate= 256.0kbits/s speed=1.55e+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/OPEN (0%) IDLE
Mon Feb 2 19:46:30 -03 2026 [elapsed=177 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: 41.98 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Mon Feb 2 19:47:36 -03 2026 [elapsed=243 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon Feb 2 19:48:01 -03 2026 [elapsed=268 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.7 IDLE
Mon Feb 2 19:48:01 -03 2026 [elapsed=268 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (7 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-53.5C)
Checking CCD plane: Z0=-198.00 DZDX=+464.00 DZDY=-410.00
acam: -53C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Mon Feb 2 19:48:01 -03 2026 [elapsed=268 sec] WEATHER
status weather: C 23.1C 46% 14/19kph@287 DP10.1C/-89C/d IDLE
...OK
Mon Feb 2 19:48:01 -03 2026 [elapsed=268 sec] MET
status...OK
met: c=N o=Y Ro6d Co21h Wo47d Ho47d To47d Do7d IDLE
Mon Feb 2 19:48:01 -03 2026 [elapsed=268 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon Feb 2 19:48:03 -03 2026 [elapsed=270 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 70.65 -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 0 0.0mm 15 N F R
exercising shutters...Using amcam-mezz-s to record
A 0.020s 8 0.1%
A 0.051s 102 1.1%
A 0.081s 390 4.3%
A 0.111s 730 8.0%
A 0.142s 1202 13.1%
A 0.172s 1773 19.4%
A 0.202s 2466 26.9%
A 0.233s 3267 35.7%
A 0.263s 4164 45.5%
A 0.293s 5108 55.8%
A 0.324s 5981 65.3%
A 0.354s 6779 74.1%
A 0.384s 7436 81.2%
A 0.415s 8011 87.5%
A 0.445s 8455 92.4%
A 0.475s 8794 96.1%
A 0.506s 9029 98.6%
A 0.536s 9141 99.9%
A 0.566s 9156 100.0%
B 0.020s 2 0.0%
B 0.050s 97 1.1%
B 0.081s 388 4.2%
B 0.111s 749 8.2%
B 0.142s 1208 13.2%
B 0.172s 1805 19.7%
B 0.202s 2494 27.2%
B 0.233s 3309 36.1%
B 0.263s 4235 46.3%
B 0.293s 5173 56.5%
B 0.324s 6050 66.1%
B 0.354s 6828 74.6%
B 0.384s 7471 81.6%
B 0.415s 8044 87.9%
B 0.445s 8484 92.7%
B 0.476s 8810 96.2%
B 0.506s 9041 98.8%
B 0.536s 9149 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.051s 9053 98.9%
A 0.081s 8771 95.8%
A 0.111s 8428 92.1%
A 0.141s 7958 86.9%
A 0.172s 7378 80.6%
A 0.202s 6689 73.1%
A 0.232s 5894 64.4%
A 0.262s 4983 54.4%
A 0.293s 4053 44.3%
A 0.323s 3167 34.6%
A 0.353s 2376 26.0%
A 0.384s 1717 18.8%
A 0.414s 1140 12.5%
A 0.445s 702 7.7%
A 0.475s 360 3.9%
A 0.505s 130 1.4%
A 0.536s 10 0.1%
A 0.566s -3 0.0%
B 0.020s 9149 99.9%
B 0.050s 9044 98.8%
B 0.081s 8780 95.9%
B 0.111s 8430 92.1%
B 0.141s 7977 87.1%
B 0.172s 7396 80.8%
B 0.202s 6686 73.0%
B 0.233s 5897 64.4%
B 0.263s 4988 54.5%
B 0.293s 4033 44.1%
B 0.324s 3166 34.6%
B 0.354s 2374 25.9%
B 0.385s 1719 18.8%
B 0.415s 1152 12.6%
B 0.445s 686 7.5%
B 0.475s 360 3.9%
B 0.506s 126 1.4%
B 0.536s 4 0.0%
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 0.566 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= 230kB time=00:00:07.36 bitrate= 256.1kbits/s speed=1.19e+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
Mon Feb 2 19:48:40 -03 2026 [elapsed=307 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.7 IDLE
taking preflight exposures:
acam...OK
acam image:
156M Feb 2 19:48 /atlas/obs/04a/61074/04a61074e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon Feb 2 19:49:02 -03 2026 [elapsed=329 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (16 seconds old)
OTA humidity level...OK (6%)
Dome humidity exists...OK
Dome humidity is current... OK
Mon Feb 2 19:49:02 -03 2026 [elapsed=329 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61073.95073102|info|galildriver|using focus model: foc=9830+(3.50)*23.8+(-0.35)*60.3=9892.2
61073.95073569|info|galildriver|o 3 IN | cass: 6106252 30.53 mm b=23 move=NO | arm: 407159 474.00 mm b=03 move=OK | foc: 53272499 9892 um b=0f [cmd]
bestfocus for o...OK
Mon Feb 2 19:49:04 -03 2026 [elapsed=331 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon Feb 2 19:49:37 -03 2026 [elapsed=364 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 Feb 2 19:49:38 -03 2026 [elapsed=365 sec] Happy observing!
Mon Feb 2 19:49:38 -03 2026 [elapsed=365 sec] Preflight took 365 seconds to complete.
Mon Feb 2 19:49:38 -03 2026 [elapsed=365 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 117 1.3% A 0.081s 381 4.2% A 0.111s 731 8.0% A 0.141s 1198 13.1% A 0.171s 1780 19.4% A 0.202s 2465 26.9% A 0.232s 3266 35.7% A 0.262s 4174 45.6% A 0.292s 5106 55.8% A 0.323s 5991 65.4% A 0.353s 6780 74.1% A 0.383s 7430 81.2% A 0.413s 8009 87.5% A 0.443s 8458 92.4% A 0.474s 8787 96.0% A 0.504s 9030 98.6% A 0.534s 9138 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.050s 114 1.2% B 0.080s 379 4.1% B 0.111s 715 7.8% B 0.141s 1185 12.9% B 0.171s 1752 19.1% B 0.201s 2443 26.7% B 0.231s 3242 35.4% B 0.262s 4137 45.2% B 0.292s 5074 55.4% B 0.322s 5960 65.1% B 0.352s 6749 73.7% B 0.382s 7420 81.1% B 0.413s 7985 87.2% B 0.443s 8444 92.2% B 0.473s 8785 96.0% B 0.504s 9018 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 9040 98.8% A 0.081s 8770 95.8% A 0.111s 8412 91.9% A 0.141s 7943 86.8% A 0.171s 7360 80.4% A 0.202s 6666 72.8% A 0.232s 5871 64.1% A 0.262s 4947 54.0% A 0.292s 4012 43.8% A 0.323s 3141 34.3% A 0.353s 2359 25.8% A 0.383s 1694 18.5% A 0.413s 1126 12.3% A 0.444s 681 7.4% A 0.474s 359 3.9% A 0.504s 124 1.4% A 0.534s 14 0.2% A 0.564s 2 0.0% B 0.020s 9140 99.8% B 0.050s 9010 98.4% B 0.081s 8770 95.8% B 0.111s 8407 91.8% B 0.141s 7934 86.7% B 0.171s 7357 80.4% B 0.202s 6663 72.8% B 0.232s 5891 64.4% B 0.262s 4950 54.1% B 0.293s 4023 43.9% B 0.323s 3136 34.3% B 0.353s 2367 25.9% B 0.383s 1682 18.4% B 0.414s 1148 12.5% B 0.444s 699 7.6% B 0.474s 356 3.9% B 0.504s 132 1.4% B 0.534s 15 0.2% B 0.565s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R