CHL Preflight Night 61137
Executing preflight for 61137 at Mon Apr 6 17:35:29 -04 2026.
Log can be found in /atlas/obs/04/61137/preflight.dat.
Setting donefile '/atlas/obs/04/61137/preflight_complete.20260406213529.30528' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260406213529.30528.
Mon Apr 6 17:35:29 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Mon Apr 6 17:35:29 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [24c7c260-8bf6-47e3-b164-c3338476efd4;1800]
Mon Apr 6 17:35:29 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Mon Apr 6 17:35:30 -04 2026 [elapsed=1 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Mon Apr 6 17:35:30 -04 2026 [elapsed=1 sec] auxcam is disabled.
Mon Apr 6 17:35:30 -04 2026 [elapsed=1 sec] Skipping auxcam.
error: unknown module: vent
Mon Apr 6 17:35:30 -04 2026 [elapsed=1 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1775511329
OK
Mon Apr 6 17:35:30 -04 2026 [elapsed=1 sec] OPSEC
AUTO mode: ...OK
Mon Apr 6 17:35:30 -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
Mon Apr 6 17:35:32 -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
Mon Apr 6 17:35:32 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Mon Apr 6 17:35:32 -04 2026 [elapsed=3 sec] CLOCKS
admin: Mon Apr 6 21:35:32 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 301 512 377 0.311 0.859 1.049
+10.0.11.4 .GPS. 1 u 219 512 377 0.734 0.549 1.366
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 150 512 377 224.366 -7.232 1.034
-185.125.190.58 146.131.121.246 2 u 65 512 377 219.777 -4.520 1.972
+alphyn.canonica 132.163.96.1 2 u 339 512 377 163.924 0.800 1.610
-185.125.190.56 146.131.121.246 2 u 318 512 377 221.640 -6.327 1.627
Mon Apr 6 17:35:33 -04 2026 [elapsed=4 sec] DISKS
200GB available in /atlas/obs...OK (4152GB)
200GB available in /atlas/red...OK (7743GB)
Checking disks on admin ... archon ... proc1 ... proc2 ... proc3 ... proc4 ... done
Filesystem Size Used Avail Use% Mounted_on
admin:/dev/md0p1 11T 6.3T 4.0T 62% /
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 36G 36% /
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 6.3T 7.4T 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 502G 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
Mon Apr 6 17:35:33 -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
Mon Apr 6 17:35:34 -04 2026 [elapsed=5 sec] Disabling mount tracking.
Mon Apr 6 17:35:34 -04 2026 [elapsed=5 sec] SERVICES2
Mon Apr 6 17:35:34 -04 2026 [elapsed=5 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Mon Apr 6 17:35:38 -04 2026 [elapsed=9 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=1.55e+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/CLOSED (0%) IDLE
Mon Apr 6 17:38:57 -04 2026 [elapsed=208 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: 87.14 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Mon Apr 6 17:40:04 -04 2026 [elapsed=275 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Mon Apr 6 17:40:28 -04 2026 [elapsed=299 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=923/0 spi=39.9 IDLE
Mon Apr 6 17:40:28 -04 2026 [elapsed=299 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (4 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=+467.00 DZDY=-413.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=923 IDLE
Mon Apr 6 17:40:28 -04 2026 [elapsed=299 sec] WEATHER
status weather: C 22.2C 31% 10/16kph@274 DP17.2C/-40C/d IDLE
...OK
Mon Apr 6 17:40:29 -04 2026 [elapsed=300 sec] MET
status...OK
met: c=N o=Y Ro1d Co1d Wo1d Ho1d To1d Do1d IDLE
Mon Apr 6 17:40:29 -04 2026 [elapsed=300 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Mon Apr 6 17:40:31 -04 2026 [elapsed=302 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 115.82 -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 9 0.1%
A 0.051s 113 1.2%
A 0.081s 398 4.3%
A 0.111s 742 8.1%
A 0.141s 1224 13.4%
A 0.172s 1798 19.6%
A 0.202s 2489 27.2%
A 0.232s 3284 35.9%
A 0.263s 4194 45.8%
A 0.293s 5141 56.2%
A 0.323s 6013 65.7%
A 0.354s 6803 74.3%
A 0.384s 7449 81.4%
A 0.414s 8027 87.7%
A 0.445s 8468 92.5%
A 0.475s 8805 96.2%
A 0.505s 9034 98.7%
A 0.535s 9142 99.9%
A 0.566s 9158 100.0%
B 0.020s 1 0.0%
B 0.051s 89 1.0%
B 0.081s 376 4.1%
B 0.111s 737 8.1%
B 0.142s 1192 13.0%
B 0.172s 1782 19.5%
B 0.202s 2469 27.0%
B 0.233s 3254 35.5%
B 0.263s 4171 45.6%
B 0.293s 5114 55.9%
B 0.323s 5996 65.5%
B 0.354s 6780 74.1%
B 0.384s 7431 81.2%
B 0.414s 8010 87.5%
B 0.445s 8459 92.4%
B 0.475s 8793 96.1%
B 0.505s 9032 98.7%
B 0.535s 9146 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9153 100.0%
A 0.050s 9063 99.0%
A 0.081s 8779 95.9%
A 0.111s 8439 92.2%
A 0.141s 7981 87.2%
A 0.171s 7389 80.7%
A 0.202s 6716 73.4%
A 0.232s 5923 64.7%
A 0.263s 4980 54.4%
A 0.293s 4051 44.3%
A 0.323s 3166 34.6%
A 0.354s 2382 26.0%
A 0.384s 1714 18.7%
A 0.415s 1140 12.5%
A 0.445s 702 7.7%
A 0.475s 356 3.9%
A 0.505s 130 1.4%
A 0.536s 12 0.1%
A 0.566s -4 0.0%
B 0.020s 9148 99.9%
B 0.051s 9037 98.7%
B 0.081s 8762 95.7%
B 0.111s 8405 91.8%
B 0.142s 7945 86.8%
B 0.172s 7360 80.4%
B 0.202s 6663 72.8%
B 0.233s 5872 64.1%
B 0.263s 4961 54.2%
B 0.293s 4007 43.8%
B 0.324s 3141 34.3%
B 0.354s 2352 25.7%
B 0.384s 1697 18.5%
B 0.414s 1135 12.4%
B 0.445s 673 7.4%
B 0.475s 350 3.8%
B 0.505s 115 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 0.535 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=1.2e+03x
audio converted to shutter.wav.
Copying shutter audio to dashboards ... done
DFM (FOCUS)
changing to best focus... dfm: filter=o[3] foc=9885 IDLE
Mon Apr 6 17:41:08 -04 2026 [elapsed=339 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=923/0 spi=39.9 IDLE
taking preflight exposures:
acam...OK
acam image:
159M Apr 6 17:41 /atlas/obs/04a/61137/04a61137e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Mon Apr 6 17:41:30 -04 2026 [elapsed=361 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (24 seconds old)
OTA humidity level...OK (8%)
Dome humidity exists...OK
Dome humidity is current... OK
Mon Apr 6 17:41:30 -04 2026 [elapsed=361 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61136.90382931|info|galildriver|using focus model: foc=9830+(3.50)*21.1+(-0.35)*60.3=9882.8
61136.90383433|info|galildriver|o 3 IN | cass: 6106839 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53273824 9885 um b=8f M [focus]
61136.90384448|info|galildriver|o 3 IN | cass: 6106842 30.53 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53274110 9884 um b=0f [cmd]
bestfocus for o...OK
Mon Apr 6 17:41:33 -04 2026 [elapsed=364 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Mon Apr 6 17:42:06 -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.
Mon Apr 6 17:42:07 -04 2026 [elapsed=398 sec] Happy observing!
Mon Apr 6 17:42:07 -04 2026 [elapsed=398 sec] Preflight took 398 seconds to complete.
Mon Apr 6 17:42:07 -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 3 0.0% A 0.051s 121 1.3% A 0.081s 387 4.2% A 0.111s 736 8.0% A 0.141s 1197 13.1% A 0.171s 1783 19.5% A 0.202s 2465 26.9% A 0.232s 3267 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 7433 81.2% A 0.413s 8006 87.5% A 0.443s 8445 92.3% A 0.473s 8783 95.9% A 0.504s 9022 98.6% A 0.534s 9136 99.8% A 0.564s 9152 100.0% B 0.020s 2 0.0% B 0.051s 110 1.2% B 0.081s 379 4.1% B 0.111s 728 8.0% B 0.141s 1202 13.1% B 0.172s 1774 19.4% B 0.202s 2468 27.0% B 0.232s 3266 35.7% B 0.262s 4168 45.5% B 0.293s 5103 55.7% B 0.323s 5989 65.4% B 0.353s 6771 74.0% B 0.383s 7439 81.3% B 0.414s 8001 87.4% B 0.444s 8456 92.4% B 0.474s 8795 96.1% B 0.504s 9017 98.5% B 0.535s 9138 99.8% B 0.565s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9153 100.0% A 0.050s 9050 98.9% A 0.081s 8778 95.9% A 0.111s 8435 92.1% A 0.141s 7975 87.1% A 0.171s 7401 80.8% A 0.202s 6717 73.4% A 0.232s 5923 64.7% A 0.262s 5013 54.8% A 0.292s 4069 44.5% A 0.323s 3193 34.9% A 0.353s 2410 26.3% A 0.383s 1730 18.9% A 0.413s 1164 12.7% A 0.444s 705 7.7% A 0.474s 367 4.0% A 0.504s 131 1.4% A 0.535s 16 0.2% A 0.565s 3 0.0% B 0.020s 9144 99.9% B 0.050s 9017 98.5% B 0.081s 8770 95.8% B 0.111s 8420 92.0% B 0.141s 7951 86.9% B 0.172s 7377 80.6% B 0.202s 6688 73.1% B 0.232s 5892 64.4% B 0.262s 4980 54.4% B 0.293s 4050 44.2% B 0.323s 3191 34.9% B 0.353s 2417 26.4% B 0.383s 1726 18.9% B 0.413s 1162 12.7% B 0.444s 713 7.8% B 0.474s 364 4.0% B 0.504s 138 1.5% B 0.534s 15 0.2% B 0.565s 1 0.0% A -1 -0.0mm 15 N F R | B 1 0.0mm 15 N F R