CHL Preflight Night 61143
Executing preflight for 61143 at Sun Apr 12 17:28:38 -04 2026.
Log can be found in /atlas/obs/04/61143/preflight.dat.
Setting donefile '/atlas/obs/04/61143/preflight_complete.20260412212838.11519' on successful script completion.
Sitech host is tcs.
Disabling voice.exe countdown.
Disabling chiller checks.
Disabling dehumidifier power check.
Logging errors to /tmp/preflight.20260412212838.11519.
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] DFM (initialization)
get service string...OK
service is running...OK
is initialized...OK
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] Getting TCS lock.
OK TCS lock granted to preflight-CHL [e7cfdd26-10a4-40e5-9413-55851c9735c8;1800]
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] Enabling red LEDs for preflight.
sitepsw 3 ON redLED
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] About to start CHL preflight. Point your web browser at http://localhost:7454.
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] auxcam is disabled.
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] Skipping auxcam.
error: unknown module: vent
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] DEADMAN
Get heartbeat host ... got 'tcs'
Fetching timestamp (redis-cli -h tcs) ... done. Got response: 1776029317
OK
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 sec] OPSEC
AUTO mode: ...OK
Sun Apr 12 17:28:39 -04 2026 [elapsed=0 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 12 17:28:41 -04 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
Sun Apr 12 17:28:42 -04 2026 [elapsed=3 sec] QUEUE
0 observations queued.
Sun Apr 12 17:28:42 -04 2026 [elapsed=3 sec] CLOCKS
admin: Sun Apr 12 21:28:42 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 675 1024 377 0.306 0.116 0.856
+10.0.11.4 .GPS. 1 u 949 1024 377 0.697 0.390 0.808
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
-185.125.190.57 99.220.8.133 2 u 628 1024 377 222.084 -7.424 1.465
-185.125.190.58 146.131.121.246 2 u 750 1024 377 221.246 -6.047 1.073
+alphyn.canonica 132.163.96.1 2 u 249 1024 377 165.974 -0.453 1.484
-185.125.190.56 146.131.121.246 2 u 381 1024 377 225.246 -7.338 1.247
Sun Apr 12 17:28:42 -04 2026 [elapsed=3 sec] DISKS
200GB available in /atlas/obs...OK (3995GB)
200GB available in /atlas/red...OK (7645GB)
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 6.4T 7.3T 47% /
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 631G 13T 5% /
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 692G 13T 6% /
proc4:/dev/loop2 105M 105M 0 100% /snap/core/17272
proc4:/dev/loop0 106M 106M 0 100% /snap/core/17284
Sun Apr 12 17:28:42 -04 2026 [elapsed=3 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 12 17:28:43 -04 2026 [elapsed=4 sec] Disabling mount tracking.
Sun Apr 12 17:28:43 -04 2026 [elapsed=4 sec] Closing dome.
Sun Apr 12 17:29:34 -04 2026 [elapsed=55 sec] SERVICES2
Sun Apr 12 17:29:34 -04 2026 [elapsed=55 sec] CHILLER
status...OK
chiller: 3.0/3.0C ? chiller=ON dryer=? IDLE
Sun Apr 12 17:29:38 -04 2026 [elapsed=59 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
Sun Apr 12 17:32:58 -04 2026 [elapsed=259 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: 91.55 -27.58, az/alt=324.55 +86.48 idle(e) IDLE
Sun Apr 12 17:34:04 -04 2026 [elapsed=325 sec] MODO
status...OK
slewing to az=60,alt=60...OK
modo: dome=stopped mount=tracking IDLE
Sun Apr 12 17:34:29 -04 2026 [elapsed=350 sec] CAM SERVICE
status...OK
cam: main=[idle] aux=[off] N=889/0 spi=38.9 IDLE
Sun Apr 12 17:34:29 -04 2026 [elapsed=350 sec] ACAM
status Camera tripped exists... OK
Camera tripped is current... OK (10 seconds old)
Software failsafe ready... OK (NA)
CCD on...OK
ION pump on...OK
CCD temp...OK (-53.6C)
Checking CCD plane: Z0=-199.00 DZDX=+456.00 DZDY=-413.00
acam: -54C CCD TEC ION e=30.0s d=0.6s N=889 IDLE
Sun Apr 12 17:34:29 -04 2026 [elapsed=350 sec] WEATHER
status weather: C 25.6C 20% 9/14kph@278 DP24.1C/-23C/d IDLE
...OK
Sun Apr 12 17:34:29 -04 2026 [elapsed=350 sec] MET
status...OK
met: c=N o=Y Ro1d Co7d Wo7d Ho7d To7d Do7d IDLE
Sun Apr 12 17:34:29 -04 2026 [elapsed=350 sec] SENTRY
status...OK
sentry: close=YES open=NO drop=NO IDLE
Sun Apr 12 17:34:31 -04 2026 [elapsed=352 sec] DFM (SHUTTERS)
initializing and homing shutters...
mount 120.23 -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 10 0.1%
A 0.051s 118 1.3%
A 0.081s 395 4.3%
A 0.111s 739 8.1%
A 0.141s 1223 13.4%
A 0.172s 1796 19.6%
A 0.202s 2490 27.2%
A 0.232s 3289 35.9%
A 0.262s 4198 45.9%
A 0.293s 5137 56.1%
A 0.323s 6009 65.6%
A 0.354s 6806 74.4%
A 0.384s 7453 81.4%
A 0.414s 8027 87.7%
A 0.444s 8468 92.5%
A 0.475s 8802 96.2%
A 0.505s 9033 98.7%
A 0.535s 9140 99.8%
A 0.566s 9156 100.0%
B 0.020s 2 0.0%
B 0.051s 92 1.0%
B 0.081s 376 4.1%
B 0.111s 736 8.0%
B 0.142s 1193 13.0%
B 0.172s 1783 19.5%
B 0.203s 2470 27.0%
B 0.233s 3255 35.6%
B 0.263s 4172 45.6%
B 0.294s 5145 56.2%
B 0.324s 6022 65.8%
B 0.354s 6804 74.3%
B 0.385s 7451 81.4%
B 0.415s 8026 87.7%
B 0.445s 8472 92.5%
B 0.475s 8801 96.1%
B 0.506s 9036 98.7%
B 0.536s 9147 99.9%
sleeping 3 sec between shutter moves...
A 0.020s 9152 100.0%
A 0.051s 9057 98.9%
A 0.081s 8768 95.8%
A 0.111s 8427 92.1%
A 0.142s 7963 87.0%
A 0.172s 7372 80.5%
A 0.202s 6663 72.8%
A 0.232s 5868 64.1%
A 0.263s 4949 54.1%
A 0.293s 4026 44.0%
A 0.323s 3137 34.3%
A 0.354s 2355 25.7%
A 0.384s 1695 18.5%
A 0.414s 1123 12.3%
A 0.445s 693 7.6%
A 0.475s 348 3.8%
A 0.505s 124 1.4%
A 0.536s 11 0.1%
A 0.566s -4 0.0%
B 0.020s 9147 99.9%
B 0.050s 9038 98.7%
B 0.081s 8769 95.8%
B 0.111s 8417 91.9%
B 0.142s 7960 87.0%
B 0.172s 7376 80.6%
B 0.202s 6686 73.0%
B 0.232s 5897 64.4%
B 0.263s 4988 54.5%
B 0.293s 4034 44.1%
B 0.323s 3167 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 126 1.4%
B 0.536s 6 0.1%
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 0.1 percent in 0.536 seconds.
Problems: 0
---------------------------------------------------
Attempting audio conversion ... size= 226kB time=00:00:07.23 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=9897 IDLE
Sun Apr 12 17:35:08 -04 2026 [elapsed=389 sec] IMAGING (acam+auxcam)
status...OK
cam: main=[idle] aux=[off] N=889/0 spi=38.9 IDLE
taking preflight exposures:
acam...OK
acam image:
160M Apr 12 17:35 /atlas/obs/04a/61143/04a61143e0001o.arch.fz
AUXCAM: Skipping (noauxcam=1).
Sun Apr 12 17:35:30 -04 2026 [elapsed=411 sec] DEHUMIDIFIER
OTA humidity exists...OK
OTA humidity is current... OK (26 seconds old)
OTA humidity level...OK (7%)
Dome humidity exists...OK
Dome humidity is current... OK
Sun Apr 12 17:35:31 -04 2026 [elapsed=412 sec] SCHEDULE
Status...OK
Checking scheduled filter...correct filter inserted
dfm: OK [bestfocus]
61142.89966810|info|galildriver|using focus model: foc=9830+(3.50)*24.1+(-0.35)*60.3=9893.3
61142.89967312|info|galildriver|o 3 IN | cass: 6104775 30.52 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53271391 9897 um b=8f M [focus]
61142.89968326|info|galildriver|o 3 IN | cass: 6104771 30.52 mm b=23 move=NO | arm: 407123 473.96 mm b=03 move=OK | foc: 53271706 9896 um b=0f [cmd]
bestfocus for o...OK
Sun Apr 12 17:35:33 -04 2026 [elapsed=414 sec] Parking the mount.
Parking ... mount: task <-parksouth> accepted
Waiting ... Mount is parked.
Sun Apr 12 17:36:07 -04 2026 [elapsed=448 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 12 17:36:08 -04 2026 [elapsed=449 sec] Happy observing!
Sun Apr 12 17:36:08 -04 2026 [elapsed=449 sec] Preflight took 449 seconds to complete.
Sun Apr 12 17:36:08 -04 2026 [elapsed=449 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 0.051s 122 1.3% A 0.082s 405 4.4% A 0.112s 762 8.3% A 0.143s 1231 13.4% A 0.173s 1843 20.1% A 0.203s 2538 27.7% A 0.234s 3350 36.6% A 0.264s 4265 46.6% A 0.295s 5191 56.7% A 0.325s 6078 66.4% A 0.356s 6843 74.8% A 0.386s 7513 82.1% A 0.417s 8071 88.2% A 0.447s 8507 92.9% A 0.478s 8828 96.4% A 0.508s 9049 98.9% A 0.538s 9146 99.9% B 0.020s 2 0.0% B 0.051s 110 1.2% B 0.081s 387 4.2% B 0.111s 741 8.1% B 0.142s 1219 13.3% B 0.172s 1796 19.6% B 0.203s 2492 27.2% B 0.233s 3322 36.3% B 0.264s 4229 46.2% B 0.294s 5161 56.4% B 0.324s 6044 66.0% B 0.355s 6818 74.5% B 0.386s 7480 81.7% B 0.416s 8050 87.9% B 0.447s 8493 92.8% B 0.477s 8822 96.4% B 0.508s 9039 98.7% B 0.538s 9144 99.9% B 0.569s 9156 100.0% sleeping 3 sec between shutter moves... A 0.020s 9152 100.0% A 0.051s 9050 98.9% A 0.081s 8777 95.9% A 0.112s 8408 91.9% A 0.142s 7941 86.7% A 0.173s 7359 80.4% A 0.203s 6668 72.8% A 0.234s 5839 63.8% A 0.264s 4920 53.7% A 0.295s 3979 43.5% A 0.325s 3111 34.0% A 0.355s 2340 25.6% A 0.386s 1670 18.2% A 0.416s 1114 12.2% A 0.446s 669 7.3% A 0.477s 339 3.7% A 0.507s 114 1.2% A 0.538s 10 0.1% A 0.568s 2 0.0% B 0.020s 9145 99.9% B 0.051s 9018 98.5% B 0.081s 8772 95.8% B 0.111s 8420 92.0% B 0.142s 7951 86.9% B 0.172s 7378 80.6% B 0.203s 6690 73.1% B 0.233s 5865 64.1% B 0.264s 4950 54.1% B 0.294s 4022 43.9% B 0.324s 3137 34.3% B 0.355s 2370 25.9% B 0.385s 1683 18.4% B 0.415s 1131 12.4% B 0.445s 687 7.5% B 0.476s 347 3.8% B 0.506s 127 1.4% B 0.536s 12 0.1% B 0.566s 1 0.0% A 0 0.0mm 15 N F R | B 1 0.0mm 15 N F R