wiki:NightOperations/Commissioning/Plans/20161007

20161007 Commissioning Plan

Priorities for test are in the order listed in the plan below.

Highest Priority: Engineering; do any support for Hanshin or Randy in support of Hanshin.

Closed dome engineering for bad weather, or while stacking:

Closed dome trajectories

Purpose: Exercise the system to find any problems with the upgrades recently done to TMCS and TCS.

Procedure:

  • Send a trajectory from do_shuffle
  • Setup on trajectory, including moving all guide probes to position
  • Put one some light in the dome
  • Run all cameras.
  • Run pipelines for WFS
  • Make offsets on all guiders and ACAM.

Repeat multiple times during the night as long as the weather does not allow you to open.

Twilight Tests

start doing twilights with VIRUS with different tracker positions

Purpose: There is some interest in seeing what the long term illumination correction changes look like including what different track positions do to them. The script is "specialtwilight" in /home/mcs/astronomer/bin/. It takes a single argument which is the Observation number.

Procedure:

  • Setup the guide camera for sky twilight (GC2, 0.1 sec, B filter)
  • When you hit the correct flux level (biased to a slight higher value, perhaps 5k) execute the specialtwilight script

On-sky engineering:

Test Calibration of CWFS

Purpose: We want to calibrate the CWFS using DWFS8 on a geostationary satellite.

NOTE: Due to the poor weather the emphasis should be on the Satellite calibrations so do several different satellites before moving on to the stars

Procedure:

  • setup on a geostationary satellite on the IHMP position
  • get rough focus and confirm that GROC is ok
  • Retract ACAM
  • Open the PFIP shutter syscmd -P -v 'OpenShutter()'
  • null out the offsets for X,Y,focus, theta, phi on DWFS8
    • The X and Y prescribed corrections are between -1 and 1.
    • The Theta and Phi prescribed corrections are between -10 and 10.
    • The focus prescribed corrections are between -0.05 and 0.05.
  • save 15 images with DWFS8 ( use 3-4 sec exposures)
  • offset to CWFS (-5.5 in X)
  • null out the offsets in X and Y only.
  • save 15 images with CWFS (use 3-5 sec exposures)
  • move back to DWFS8 (+5.5 in X)
  • repeat the above steps 4 more times

Calibration of OWFS using either CWFS or DWFS8

Purpose: We want to calibrate the OWFS using DWFS8 or CWFS (depending on what stage of the testing we are in, Feedback from Hanshin) on a sidereal trajectory at one of the following Az:

a normal star for Az 180, 234, 292, 335, 0

  • setup on an 11 mag star on the IHMP
  • move all 4 guide probes to the correct RA and DEC positions from gstar or shuffle.
  • save probe positions in the RA log with /home/mcs/astronomer/caldwell/shoprobes
  • If the test is to use DWFS8 then skip this step otherwise offset telescope and probes by the amount to get to CWFS: syscmd -T 'offset_trajectory(dx_ang=-5.5, dy_ang=-1.0, adjust_probes="true")'
  • move the guide probes so that the guide stars are well centered
  • guide with either GC1 or GC2
  • get decent focus and then check and correct any GROC
  • Retract ACAM
  • Open the PFIP shutter syscmd -P -v 'OpenShutter()'
  • null out the X, Y, Focus, Theta, Phi from DWFS8
    • To make X or Y offsets you will need to:
      • open the loop on the guider
      • make your offset with the handpaddle
      • clear the fiducial
      • watch as new fiducials are set to see if it looks good
      • close the loop on the guider
    • To make the Theta and Phi offsets you will need to:
      • open the loop on the TTC
      • make your offset with the handpaddle
      • clear the fiducial
      • watch as new fiducials are set to see if it looks good
      • close the loop on the TTC
    • The X and Y prescribed corrections are between -1 and 1.
    • The Theta and Phi prescribed corrections are between -10 and 10.
    • The Focus prescribed correction is between -0.05 and 0.05
  • make small offsets with the OWFS1 and OWFS2 to get the lenslet centered. 
To move the wfs probes:
syscmd -T -v 'WFS1_offset_probe( dx_ang=1.0, dy_ang=0.0) '
syscmd -T -v 'WFS2_offset_probe( dx_ang=0.0, dy_ang=-0.5) '
The coordinates are in units of arcseconds.
  • save probe positions in the RA log with /home/mcs/astronomer/caldwell/shoprobes
  • save at least 15 images (at the same time) with all cameras that are running: GC1, GC2, WFS1, WFS2, DWFS8, TT NOTE: This can be done one jove terminal as startsaving followed by stopsaving
  • wait 10 minutes
  • null out corrections on DWFS8 or CWFS
    • NOTE: if you need to make X and Y offsets you should probably do this with a trajectory offset with probes=true to keep the WFS1 and WFS2 well centered
    • e.g. syscmd -T 'offset_trajectory(dx_ang=0.0, dy_ang=-0.3, adjust_probes="true")'
  • check GROC, make correction is required ( > 500 um correction)
  • null out corrections on DWFS8 or CWFS again if required
    • The X and Y prescribed corrections are between -1 and 1.
    • The Theta and Phi prescribed corrections are between -10 and 10.
    • The Focus prescribed correction is between -0.05 and 0.05
  • save at least 15 images (at the same time) with all cameras that are running: GC1, GC2, WFS1, WFS2, DWFS8, TT
  • repeat the last 5 steps until the end of the track.
  • Close the PFIP shutter syscmd -P -v 'CloseShutter()'

Repeat test: choosing a new star at the next Az in the list: 180, 234, 292, 335, 0.

Determine focus offset between GC1/GC2 and DWFS8

Purpose: We want to determine the focus difference between GC1 and DWFS8 and CG2 and DWFS8. The idea will be to set the position with DWFS8 and then do a focus curve with the GC.

  • select a trajectory with an 11 mag star and some stars reasonably bright for GC1 and GC2.
  • start guiding on GC1 or GC2
  • pull out the ACAM and null out the offsets for DWFS8
  • make sure GROC corrections are less than 250. null out corrections again if you did make a GROC correction.
  • stop taking images and stop the pipeline for the guide probe of interest, or both probes if you are using script10
  • use fC on the guide probe of interest, e.g. fC -exp=5 -camera=Guider1 However this is currently non-functional because of python/matlab limted
  • if you can't use fC then copy script10 from /home/mcs/astronomer to /data1/mcs/guider/YYYYMMDD/ and use this script to take data.
  • repeat this 2 more times with these same guide stars.
  • if you are using script10 measure the FWHM and determine minima and report that for each curve along with the probe position.
  • select another star with the probes in a different part of the annulus.

doing globular clusters with VIRUS

Purpose: We need to fill the IFU with lots of stars. Take a bright GC and move it to four different positions in the IFU array: 084, 085, 094 and 095.

Procedure:

  • Select a bright globular cluster near the beginning of track (try to avoid the CCAS tower).
  • Using do_shuffle put the center of the GC in one of the IFUs 084, 085, 094 and 095.
  • What ever method is used to setup on the the cluster, save the IHMP clearly in the RA logs.
  • setup on the target
  • save an ACAM image to document the setup.
  • go through a series of dithers with 180 second exposure at each dither.
  • when done with this setup, setup on the next IFU. Note if required this test could be split over nights.
  • contact Karl that the test is complete.

Test offsetting from LRS2-B -> R using GC1 & ACAM as a function or rho angle

Purpose: We want to see if rho angle of the tracker matters for making good reproducible offsets from LRS2-B to LRS2-R.

Procedure:

  • Setup on a Az = 0 star (not saturated so probably should use V=16) using GC1 and LRS2-B near the start of the track
  • Setup on one of the GC in nearly exactly the center of the GC field (record the pixel X and Y used)
  • Be sure to record the tracker positions including the rho angle
  • Using repeated offsets from LRS2-B to LRS2-R positions (but only looking at the ACAM images) determine the best value to use for the offset
  • Repeat the 4 steps above but Az=0 stars near the center and the end of the trajectory.

Test offsetting from LRS2-B -> R using GC1 & ACAM as a function of Az

Purpose: We want to see if the Az matters for making good reproducible offsets from LRS2-B to LRS2-R.

Procedure:

  • Setup on a star (not saturated so probably should use V=16) using GC1 and LRS2-B
  • Setup on one of the GC in nearly exactly the center of the GC field (record the pixel X and Y used)
  • Using repeated offsets from LRS2-B to LRS2-R positions (but only looking at the ACAM images) determine the best value to use for the offset
  • Repeat this test for several every 40 degrees of Az.
Last modified 8 years ago Last modified on Oct 6, 2016 6:31:18 AM