VLA archive file 22B-193.sb43004841.eb45211507.60337.64330296296

[xinglunju]

SB 43004841 JACKS region 17

• [x] Observations completed
• [x] VLA CASA Calibration pipeline run by observatory
• [ ] Weblog downloaded and unpacked
• [ ] Raw data downloaded (specify where)
  • [ ] local machine
  • [ ] Globus
• [ ] Pipeline calibration assessment
• [ ] Calibrated MS generated
  • [ ] Uploaded to Globus
• [ ] Imaging: Continuum
• [ ] Imaging: Lines
  • [ ] NH3 (1,1)
  • [ ] NH3 (2,2)
  • [ ] NH3 (3,3)
  • [ ] NH3 (4,4)
  • [ ] NH3 (5,5)
  • [ ] H2O
  • [ ] H64
  • [ ] H66
  • [ ] NH3 (2,1)
  • [ ] NH3 (3,2)
  • [ ] NH3 (4,3)
  • [ ] NH3 (5,4)
  • [ ] NH3 (6,5)

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[xinglunju]

Log Name: 2024-01-28_1526_22B-193 Project: 22B-193 SBID(s): 43004841 EBID(s): 45211507 Observing Date: 28-Jan-2024 Observation Type: Science Bands Used: X K No. Subarrays: 1 Observer(PI): Prof Elisabeth Mills Source File(s): 22B-193_sb43004841_1_1 Operator(s): Jesse Petrone Array Configuration: C Decommissioned Antenna: 28

Adobe PDF version of this log is located at: http://www.vla.nrao.edu/operators/logs/

WEATHER INFORMATION

Time(UTC) Dew Pt Temp Wind Bar Press API RMS Phase(degs) 28Jan 15:27:57 -6.6 -6.1 NW at 0.6 m/s 796.3 1.8 28Jan 16:01:40 -4.8 -3.7 NW at 1.0 m/s 796.3 2.9 28Jan 18:18:29 -3.8 5.4 W at 0.7 m/s 796.4 6.3 28Jan 19:00:57 -5.2 8.5 W at 0.7 m/s 795.5 5.9

Operator comments for the above weather entries

28Jan 15:27:57 Sky clear.
28Jan 16:01:40 Sky clear.
28Jan 18:18:29 Sky cover 10%. Stratiform clouds. 28Jan 19:00:57 Sky cover 30%. Stratiform clouds.

COMMENTS AND OUTAGES

Outage information format: Start Time, End Time, Category, Form#, # Antennas, Down Time(minutes) Antenna ID(s) and Data Effect Description

Number of Antennas Used: 27

28Jan 15:26:18 Starting project 22B-193.

28Jan 15:26:18 The band(s) used is(are): X K.

30Dec 15:26:18 On source 3C286 with all available antennas.

28Jan 15:26:18 Antenna(s):1,6,7,8,10,11,13,15,17,18,19,21,24,25,26,27 have recently updated baseline parameters to correct for errors resulting from their recent relocation. Please check for any significant errors and submit them to the NRAO Helpdesk (https://science.nrao.edu/observing/helpdesk) under the VLA Observing department.

28Jan 15:26:18 To access your data from the NRAO archive visit: https://science.nrao.edu/facilities/vla/archive All VLA science data are processed through the VLA calibration pipeline. Details are at: https://science.nrao.edu/facilities/vla/data-processing/pipeline For further questions please use the NRAO Helpdesk at: https://science.nrao.edu/observing/helpdesk Adobe PDF version of this log is located at: http://www.vla.nrao.edu/operators/logs/

28Jan 15:26:18 Note: To support our ongoing RFI monitoring efforts, any feedback from your program on RFI can be sent to: nrao-rfi@nrao.edu The key information to provide is:

• Observation/project code
• Frequency and Time of the observations
• The characteristics of the RFI signal, in particular if it is continuous or intermittent?
• If possible, a spectrum of the RFI should be included in the e-mail. Thanks very much for your support; this information will be continuously updated on the EVLA science pages at: https://science.nrao.edu/facilities/vla/docs/manuals/obsguide/modes/rfi/

28Jan 15:26:18 28Jan 18:55:45 SERVO WO-18966 1.00 209.5 Antenna(s) 19 (Data: Lost): Antenna parked due to elevation faults

28Jan 15:26:18 28Jan 18:55:45 CRYOGENICS WO-20064 0.12 25.3 Antenna(s) 10 (Data: Corrupted): K-band receiver warm, sensitivity degraded

28Jan 15:26:18 28Jan 18:55:45 FOCUS/ROTATION Other 0.15 31.4 Antenna(s) 27 (Data: Lost): Frequent subreflector faults or position errors.

Project End Time Total Time % Down Time Total Down Time (minutes x 27 ants) (minutes)

28-Jan-2024 18:55:45 5655.2 4.7% 266.2

[xinglunju]

Issues noted but not flagged by staff in pipeline run:

• There is gain compression evident in the observation.
• Antennas ea09 and ea12 have hardware issues.
• The low amplitude points in the calibrator UVwave plots are from ea15, spw 10.
• Baseline ea26&ea27 spw 9 is causing additional low amplitude points in the complex gain calibrator's UVwave plot.