CHL Preflight Night 61121
Executing preflight for 61121 at Sat Mar 21 18:54:50 -03 2026.
Log can be found in /atlas/obs/04/61121/preflight.dat.
Setting donefile '/atlas/obs/04/61121/preflight_complete.20260321215450.8997' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260321215450.8997.
Sat Mar 21 18:54:50 -03 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sat Mar 21 18:54:50 -03 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [48f358fd-a1d0-4a45-b75e-d8797be79f9a;1800]
Sat Mar 21 18:54:50 -03 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Sat Mar 21 18:54:51 -03 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Sat Mar 21 18:54:51 -03 2026 [elapsed=1 sec] auxcam is disabled.
Sat Mar 21 18:54:51 -03 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sat Mar 21 18:54:51 -03 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1774130091
OK
Sat Mar 21 18:54:51 -03 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sat Mar 21 18:54:51 -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
Sat Mar 21 18:54:53 -03 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
Sat Mar 21 18:54:53 -03 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sat Mar 21 18:54:53 -03 2026 [elapsed=3 sec] CLOCKS
admin: Sat Mar 21 21:54:53 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 236 256 377 0.268 -0.312 0.081
*10.0.11.4 .GPS. 1 u 83 256 377 0.576 -0.243 0.120
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 29.88.99.4 2 u 298 512 377 224.790 -9.678 0.498
-185.125.190.58 29.88.99.4 2 u 61 512 377 222.988 -8.545 1.995
+alphyn.canonica 132.163.96.1 2 u 176 256 377 156.537 -1.392 1.839
-185.125.190.56 194.121.207.249 2 u 222 512 377 218.187 -5.692 2.400
Sat Mar 21 18:54:56 -03 2026 [elapsed=6 sec] DISKS
200GB available in /atlas/obs...OK (4760GB)
200GB available in /atlas/red...OK (8393GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 5.7T 4.6T 56% /
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 5.7T 8.1T 42% /
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 441G 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 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 691G 13T 6% /
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Sat Mar 21 18:54:56 -03 2026 [elapsed=6 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
Sat Mar 21 18:54:56 -03 2026 [elapsed=6 sec] Disabling mount tracking.
Sat Mar 21 18:54:56 -03 2026 [elapsed=6 sec] SERVICES2
Sat Mar 21 18:54:56 -03 2026 [elapsed=6 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sat Mar 21 18:55:00 -03 2026 [elapsed=10 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=1.52e+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
Sat Mar 21 18:57:51 -03 2026 [elapsed=181 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: 76.11 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Sat Mar 21 18:58:57 -03 2026 [elapsed=247 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sat Mar 21 18:59:22 -03 2026 [elapsed=272 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=16/0 spi=41.6 IDLE
Sat Mar 21 18:59:22 -03 2026 [elapsed=272 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (8 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-54.0C)
Checking CCD plane: Z0=-196.00 DZDX=+457.00 DZDY=-419.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=16 IDLE
Sat Mar 21 18:59:22 -03 2026 [elapsed=272 sec] WEATHER
status weather: C 21.7C 36% 15/20kph@285 DP14.2C/-63C/d IDLE
...OK
Sat Mar 21 18:59:23 -03 2026 [elapsed=273 sec] MET
status...OK
met: c=N o=Y Ro9h Co13h Wo43d Ho43d To43d Do43d IDLE
Sat Mar 21 18:59:23 -03 2026 [elapsed=273 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sat Mar 21 18:59:23 -03 2026 [elapsed=273 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 104.78 -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 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 0 0.0mm 15 N F R
exercising shutters...Using amcam-mezz-s to record
A 0.020s 9 0.1%
A 0.051s 109 1.2%
A 0.081s 394 4.3%
A 0.111s 731 8.0%
A 0.141s 1223 13.4%
A 0.172s 1778 19.4%
A 0.202s 2493 27.2%
A 0.232s 3258 35.6%
A 0.262s 4163 45.5%
A 0.293s 5139 56.1%
A 0.323s 5985 65.4%
A 0.353s 6784 74.1%
A 0.383s 7430 81.2%
A 0.414s 8008 87.5%
A 0.444s 8469 92.5%
A 0.475s 8803 96.2%
A 0.505s 9036 98.7%
A 0.535s 9141 99.9%
A 0.565s 9157 100.0%
B 0.020s 1 0.0%
B 0.051s 82 0.9%
B 0.081s 375 4.1%
B 0.112s 735 8.0%
B 0.142s 1192 13.0%
B 0.172s 1781 19.5%
B 0.202s 2470 27.0%
B 0.233s 3254 35.5%
B 0.263s 4171 45.6%
B 0.293s 5113 55.9%
B 0.324s 5992 65.5%
B 0.354s 6782 74.1%
B 0.384s 7430 81.2%
B 0.415s 8009 87.5%
B 0.445s 8459 92.4%
B 0.475s 8791 96.0%
B 0.506s 9031 98.7%
B 0.536s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.051s 9060 99.0%
A 0.081s 8782 95.9%
A 0.111s 8443 92.2%
A 0.141s 7962 87.0%
A 0.172s 7374 80.6%
A 0.202s 6694 73.1%
A 0.232s 5893 64.4%
A 0.263s 4977 54.4%
A 0.293s 4054 44.3%
A 0.324s 3166 34.6%
A 0.354s 2385 26.1%
A 0.384s 1709 18.7%
A 0.415s 1123 12.3%
A 0.445s 691 7.5%
A 0.476s 347 3.8%
A 0.506s 126 1.4%
A 0.536s 10 0.1%
A 0.567s -4 0.0%
B 0.020s 9148 99.9%
B 0.050s 9040 98.8%
B 0.081s 8771 95.8%
B 0.111s 8417 91.9%
B 0.141s 7959 86.9%
B 0.172s 7377 80.6%
B 0.202s 6684 73.0%
B 0.233s 5898 64.4%
B 0.263s 4989 54.5%
B 0.293s 4034 44.1%
B 0.323s 3165 34.6%
B 0.354s 2374 25.9%
B 0.384s 1717 18.8%
B 0.414s 1151 12.6%
B 0.445s 685 7.5%
B 0.475s 360 3.9%
B 0.505s 127 1.4%
B 0.535s 6 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 0.565 seconds.
Shutter B opened to 99.9 percent in 0.536 seconds.
Shutter A closed to 0.0 percent in 0.567 seconds.
Shutter B closed to 0.1 percent in 0.535 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 bitrate= 256.1kbits/s speed=1.15e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=c[4] foc=9884 IDLE
Sat Mar 21 18:59:58 -03 2026 [elapsed=308 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=16/0 spi=41.6 IDLE
taking preflight exposures:
acam...OK
acam image:
156M Mar 21 19:00 /atlas/obs/04a/61121/04a61121e0001c.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sat Mar 21 19:00:20 -03 2026 [elapsed=330 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (74 seconds old)
OTA humidity level...OK (5%)
Dome humidity exists...OK
Dome humidity is current... OK
Sat Mar 21 19:00:21 -03 2026 [elapsed=331 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61120.91691335|info|galildriver|using focus model: foc=9830+(3.50)*21.6+(-0.35)*60.2=9884.5
61120.91691802|info|galildriver|c 4 IN | cass: 9136458 45.68 mm b=23 move=NO | arm: 407051 473.88 mm b=03 move=OK | foc: 53274041 9884 um b=0f [cmd]
bestfocus for c...OK
Sat Mar 21 19:00:21 -03 2026 [elapsed=331 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sat Mar 21 19:00:55 -03 2026 [elapsed=365 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.
Sat Mar 21 19:00:56 -03 2026 [elapsed=366 sec] Happy observing!
Sat Mar 21 19:00:56 -03 2026 [elapsed=366 sec] Preflight took 366 seconds to complete.
Sat Mar 21 19:00:56 -03 2026 [elapsed=366 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 116 1.3% A 0.081s 373 4.1% A 0.111s 718 7.8% A 0.141s 1182 12.9% A 0.171s 1759 19.2% A 0.202s 2441 26.7% A 0.232s 3238 35.4% A 0.262s 4144 45.3% A 0.292s 5077 55.5% A 0.322s 5963 65.1% A 0.353s 6756 73.8% A 0.383s 7412 81.0% A 0.413s 7991 87.3% A 0.444s 8446 92.3% A 0.474s 8779 95.9% A 0.504s 9023 98.6% A 0.534s 9137 99.8% A 0.565s 9152 100.0% B 0.020s -1 -0.0% B 0.050s 105 1.1% B 0.081s 378 4.1% B 0.111s 714 7.8% B 0.141s 1185 12.9% B 0.171s 1753 19.2% B 0.202s 2441 26.7% B 0.232s 3240 35.4% B 0.262s 4135 45.2% B 0.292s 5074 55.4% B 0.322s 5959 65.1% B 0.352s 6749 73.7% B 0.383s 7418 81.0% B 0.413s 7986 87.2% B 0.443s 8431 92.1% B 0.473s 8778 95.9% B 0.503s 9012 98.4% B 0.534s 9133 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9155 100.0% A 0.050s 9050 98.9% A 0.081s 8783 95.9% A 0.111s 8430 92.1% A 0.141s 7965 87.0% A 0.171s 7385 80.7% A 0.202s 6694 73.1% A 0.232s 5903 64.5% A 0.262s 4982 54.4% A 0.293s 4045 44.2% A 0.323s 3172 34.7% A 0.353s 2381 26.0% A 0.383s 1714 18.7% A 0.414s 1146 12.5% A 0.444s 692 7.6% A 0.474s 360 3.9% A 0.504s 125 1.4% A 0.535s 15 0.2% A 0.565s 4 0.0% B 0.020s 9144 99.9% B 0.050s 9009 98.4% B 0.081s 8770 95.8% B 0.111s 8420 92.0% B 0.141s 7951 86.9% B 0.171s 7377 80.6% B 0.202s 6687 73.1% B 0.232s 5892 64.4% B 0.262s 4983 54.4% B 0.292s 4052 44.3% B 0.322s 3161 34.5% B 0.353s 2393 26.1% B 0.383s 1704 18.6% B 0.413s 1147 12.5% B 0.443s 700 7.6% B 0.474s 355 3.9% B 0.504s 133 1.5% B 0.534s 13 0.1% B 0.564s 0 0.0% A -1 -0.0mm 15 N F R | B 0 0.0mm 15 N F R