CHL Preflight Night 61157
Executing preflight for 61157 at Sun Apr 26 17:13:58 -04 2026.
Log can be found in /atlas/obs/04/61157/preflight.dat.
Setting donefile '/atlas/obs/04/61157/preflight_complete.20260426211358.25426' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260426211358.25426.
Sun Apr 26 17:13:58 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sun Apr 26 17:13:58 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [70cc9a51-81c6-4937-b715-65755d5b0c79;1800]
Sun Apr 26 17:13:58 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Sun Apr 26 17:13:59 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Sun Apr 26 17:13:59 -04 2026 [elapsed=1 sec] auxcam is disabled.
Sun Apr 26 17:13:59 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Sun Apr 26 17:13:59 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1777238033
OK
Sun Apr 26 17:13:59 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Sun Apr 26 17:13:59 -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
Sun Apr 26 17:14:07 -04 2026 [elapsed=9 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
Sun Apr 26 17:14:07 -04 2026 [elapsed=9 sec] QUEUE
0 observations queued.
Sun Apr 26 17:14:07 -04 2026 [elapsed=9 sec] CLOCKS
admin: Sun Apr 26 21:14:07 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 467 1024 377 0.274 0.010 1.708
+10.0.11.4 .GPS. 1 u 148 1024 377 0.560 0.018 1.757
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 231 1024 377 233.182 -13.307 10.613
-185.125.190.58 146.131.121.246 2 u 270 1024 377 232.646 -11.403 8.928
+alphyn.canonica 132.163.96.1 2 u 954 1024 377 140.954 -0.826 1.812
-185.125.190.56 146.131.121.246 2 u 557 1024 377 212.420 -2.073 1.731
Sun Apr 26 17:14:09 -04 2026 [elapsed=11 sec] DISKS
200GB available in /atlas/obs...OK (3726GB)
200GB available in /atlas/red...OK (7424GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.7T 3.6T 66% /
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 35G 37% /
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 6.6T 7.1T 49% /
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 614G 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
Sun Apr 26 17:14:10 -04 2026 [elapsed=12 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
Sun Apr 26 17:14:10 -04 2026 [elapsed=12 sec] Disabling mount tracking.
Sun Apr 26 17:14:10 -04 2026 [elapsed=12 sec] SERVICES2
Sun Apr 26 17:14:10 -04 2026 [elapsed=12 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sun Apr 26 17:14:14 -04 2026 [elapsed=16 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=1.56e+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
Sun Apr 26 17:17:32 -04 2026 [elapsed=214 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: 101.48 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Sun Apr 26 17:18:37 -04 2026 [elapsed=279 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sun Apr 26 17:19:02 -04 2026 [elapsed=304 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=0/0 spi=38.9 IDLE
Sun Apr 26 17:19:02 -04 2026 [elapsed=304 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 (-53.7C)
Checking CCD plane: Z0=-198.00 DZDX=+468.00 DZDY=-411.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=0 IDLE
Sun Apr 26 17:19:02 -04 2026 [elapsed=304 sec] WEATHER
status weather: clear 25.8C 9% 13/15kph@281 DP28.7C/-277C/d IDLE
...OK
Sun Apr 26 17:19:02 -04 2026 [elapsed=304 sec] MET
status...OK
met: c=N o=Y Ro12d Co2d Wo21d Ho21d To21d Do21d IDLE
Sun Apr 26 17:19:02 -04 2026 [elapsed=304 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sun Apr 26 17:19:03 -04 2026 [elapsed=305 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 130.16 -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 8 0.1%
A 0.051s 118 1.3%
A 0.081s 393 4.3%
A 0.112s 739 8.1%
A 0.142s 1226 13.4%
A 0.173s 1797 19.6%
A 0.203s 2514 27.5%
A 0.233s 3308 36.1%
A 0.264s 4234 46.3%
A 0.294s 5174 56.5%
A 0.324s 6035 65.9%
A 0.355s 6827 74.6%
A 0.385s 7470 81.6%
A 0.415s 8044 87.9%
A 0.445s 8483 92.7%
A 0.476s 8813 96.3%
A 0.506s 9037 98.7%
A 0.536s 9142 99.9%
A 0.567s 9153 100.0%
B 0.020s 2 0.0%
B 0.050s 99 1.1%
B 0.081s 386 4.2%
B 0.111s 749 8.2%
B 0.141s 1209 13.2%
B 0.172s 1802 19.7%
B 0.202s 2494 27.2%
B 0.232s 3284 35.9%
B 0.263s 4201 45.9%
B 0.293s 5144 56.2%
B 0.323s 6024 65.8%
B 0.353s 6804 74.3%
B 0.384s 7450 81.4%
B 0.414s 8027 87.7%
B 0.444s 8471 92.5%
B 0.475s 8801 96.1%
B 0.505s 9037 98.7%
B 0.535s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9150 100.0%
A 0.051s 9056 98.9%
A 0.081s 8759 95.7%
A 0.112s 8419 92.0%
A 0.142s 7950 86.8%
A 0.172s 7342 80.2%
A 0.203s 6667 72.8%
A 0.233s 5864 64.1%
A 0.263s 4950 54.1%
A 0.293s 4025 44.0%
A 0.324s 3133 34.2%
A 0.354s 2343 25.6%
A 0.385s 1666 18.2%
A 0.415s 1110 12.1%
A 0.445s 681 7.4%
A 0.476s 337 3.7%
A 0.506s 122 1.3%
A 0.536s 7 0.1%
B 0.020s 9149 99.9%
B 0.051s 9047 98.8%
B 0.081s 8783 95.9%
B 0.111s 8418 92.0%
B 0.141s 7959 86.9%
B 0.172s 7377 80.6%
B 0.202s 6687 73.1%
B 0.233s 5898 64.4%
B 0.263s 4990 54.5%
B 0.293s 4033 44.1%
B 0.323s 3168 34.6%
B 0.354s 2373 25.9%
B 0.384s 1716 18.7%
B 0.414s 1153 12.6%
B 0.445s 686 7.5%
B 0.475s 359 3.9%
B 0.506s 122 1.3%
B 0.536s 6 0.1%
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 0.567 seconds.
Shutter B opened to 99.9 percent in 0.535 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=1.18e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9893 IDLE
Sun Apr 26 17:19:38 -04 2026 [elapsed=340 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:
159M Apr 26 17:19 /atlas/obs/04a/61157/04a61157e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sun Apr 26 17:20:01 -04 2026 [elapsed=363 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (85 seconds old)
OTA humidity level...OK (4%)
Dome humidity exists...OK
Dome humidity is current... OK
Sun Apr 26 17:20:01 -04 2026 [elapsed=363 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61156.88890479|info|galildriver|using focus model: foc=9830+(3.50)*24.0+(-0.35)*60.2=9892.9
61156.88890980|info|galildriver|o 3 IN | cass: 6104950 30.52 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53272234 9893 um b=0f [cmd]
bestfocus for o...OK
Sun Apr 26 17:20:01 -04 2026 [elapsed=363 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sun Apr 26 17:20:35 -04 2026 [elapsed=397 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.
Sun Apr 26 17:20:36 -04 2026 [elapsed=398 sec] Happy observing!
Sun Apr 26 17:20:36 -04 2026 [elapsed=398 sec] Preflight took 398 seconds to complete.
Sun Apr 26 17:20:36 -04 2026 [elapsed=398 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 113 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 3265 35.7% A 0.262s 4174 45.6% A 0.292s 5103 55.7% A 0.323s 5997 65.5% A 0.353s 6776 74.0% A 0.383s 7433 81.2% A 0.413s 8007 87.5% A 0.444s 8457 92.4% A 0.474s 8792 96.0% A 0.504s 9028 98.6% A 0.535s 9137 99.8% A 0.565s 9152 100.0% B 0.020s 2 0.0% B 0.050s 112 1.2% B 0.081s 380 4.2% B 0.111s 726 7.9% B 0.141s 1203 13.1% B 0.171s 1774 19.4% B 0.201s 2442 26.7% B 0.231s 3241 35.4% B 0.262s 4136 45.2% B 0.292s 5074 55.4% B 0.322s 5961 65.1% B 0.352s 6749 73.7% B 0.383s 7419 81.0% B 0.413s 7984 87.2% B 0.443s 8443 92.2% B 0.473s 8787 96.0% B 0.503s 9018 98.5% B 0.534s 9136 99.8% B 0.564s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.050s 9045 98.8% A 0.081s 8770 95.8% A 0.111s 8410 91.9% A 0.141s 7943 86.8% A 0.171s 7361 80.4% A 0.201s 6694 73.1% A 0.232s 5896 64.4% A 0.262s 4983 54.4% A 0.292s 4042 44.2% A 0.322s 3167 34.6% A 0.353s 2387 26.1% A 0.383s 1710 18.7% A 0.413s 1148 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 0.564s 3 0.0% B 0.020s 9144 99.9% B 0.050s 9017 98.5% B 0.081s 8771 95.8% B 0.111s 8421 92.0% B 0.141s 7952 86.9% B 0.171s 7379 80.6% B 0.201s 6688 73.1% B 0.232s 5893 64.4% B 0.262s 4982 54.4% B 0.292s 4051 44.3% B 0.322s 3163 34.6% B 0.353s 2416 26.4% B 0.383s 1705 18.6% B 0.413s 1164 12.7% B 0.443s 712 7.8% B 0.473s 366 4.0% B 0.504s 137 1.5% B 0.534s 17 0.2% B 0.564s 0 0.0% A -1 -0.0mm 15 N F R | B 0 0.0mm 15 N F R