20160922 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:

Single calibration with both VIRUS and LRS

Purpose: Jason would like us to get a single bias, a single dark, a single line lamp and a single flat for both LRS and VIRUS tonight.

VIRUS DARKS

Purpose: Karl would like to get 20 x 6 minute darks some time over the next few nights. This only needs to be done once.

VIRUS FLATS

Purpose: Karl would like to get 10 ldls flats some time over the next few nights. This only needs to be done once.

Twilight Tests

None tonight. We will need to restart these tomorrow night.

On-sky engineering:

Calibration of CWFS

Purpose: We want to calibrate the CWFS using DWFS8 on a geostationary satellite and OWFS using DWFS8 on a star for a full trajectory.

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
• save 15 images with DWFS8 ( use 3-4 sec exposures)
• offset to CWFS (-5.5 in X and -1 in Y)
• null out the offsets in X and Y only.
• save 15 images with CWFS (use 3-5 sec exposures)
• repeat the above steps 2 more times

Now we start on a normal star

• 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
• 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
• 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
• 10 minutes
• null out corrections on DWFS8
  • 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 WFS8 again if required
• 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.

Repeat test: going back to the geostationary satellite and then choosing a star 40 degrees away in Az from the last Az.

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.