20160920 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. Jason will also have a number of tests that will require some night hours.

Closed dome engineering for bad weather, assuming that VIRUS IFU are still mounted:

VIRUS DARKS

Purpose: Karl would like to get 20 x 6 minute darks over the course of several nights.

VIRUS FLATS

Purpose: Karl would like to get 20 ldls flats over the course of several nights.

Twilight Tests

start doing WFS

Purpose: We want to get an idea of how the orientation changes with different probe positions.

Procedure:

• Tell the RA that you are going to take the images (will move the probes but won't interfere with anything).
• On a jove terminal Move the probes to the home5 position with the command home5
• Save a few 5 second exposures which are not saturated with both WFS1 and WFS2.
• On a jove terminal Move the probes to the home3 position with the command home3
• Save a few 5 second exposures which are not saturated with both WFS1 and WFS2.
• On a jove terminal Move the probes to the home1 position with the command home1
• Save a few 5 second exposures which are not saturated with both WFS1 and WFS2.
• Move back to the home3 and home5 positions each in a row (this keeps the probes from getting confused and slow.
• On a jove terminal Move the probes to the home8 position with the command home8
• Save a few 5 second exposures which are not saturated with both WFS1 and WFS2.

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) execute the specialtwilight script

On-sky engineering:

Testing the DWFS9 imager in IFU slot 053

Purpose: We want to make sure that this imager works well with the GUI. In addition, we can collect some useful data on dithering.

Procedure:

• Select a 12 mag star (this might be to bright) to go on IFU slot 053 (try using gstar2)
• Setup on the field and get good focus on ACAM and start guiding on either GC1 or GC2.
• Retract ACAM
• Open the PFIP shutter syscmd -P -v 'OpenShutter()'
• image with the DWFS9 with exposure times shorter than 4 seconds
• make sure you are in dither position 1 syscmd -P -v 'AdjustDither(pos=1)' and save five images
• move to dither position 2 and save five images
• move to dither position 3 and save five images
• move back to dither position 1 and repeat so you have 3 sets of dithered images
• when done be sure to close the pfip shutter syscmd -P -v 'CloseShutter()'

Determining the offset from IHMP to CWFS

Purpose: We want to be able to offset from the IHMP to CWFS while under probe control. We need to know roughly what that offset is.

Procedure:

• setup on a target on the IHMP
• guide with either GC1 or GC2
• make offsets from IHMP to CWFS (might be X = -3.0" and Y = -0.3". syscmd -T 'offset_trajectory(dx_ang=-3.0, dy_ang=-0.3, adjust_probes="true")'
• continue making offsets to tune up the offset to get from IHMP to CWFS

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.

Tests offsetting to OWFS1/2 using best ACAM position or center of GC1/2

Purpose: We want to be able to hit the OWFS targets when we are on the correct ACAM position. At the current time we are often a few arcseconds away. We hope that there is some rotational zero point for the probe arm assembly to make improvements. To test this we want to do multiple setups with good centering on GC1, GC2, WFS1, WFS2 and then look for patterns.

Procedure:

• Setup on a star field with shuffle (so that you can use all 4 probes) for the IHMP 000
• Setup on ACAM to the correct location according to the finding chart.
• Record the probe positions with /home/mcs/astronomer/caldwell/shoprobes
• Ask the TO to make probe offsets to move GC1 and GC2 so that the stars are very well centered.
• Start guiding on one of the GC probes
• Retract the ACAM
• make small offsets with the OWFS1 and OWFS2 to get the lenslet centered.

To move the wfs probes:
syscmd -T -v 'WFS2_offset_probe( dx_ang=10, dy_ang=10) '
syscmd -T -v 'WFS2_offset_probe( dx_ang=10, dy_ang=10) '
The coordinates are in units of arcseconds.

• once everything is centered save probe positions with /home/mcs/astronomer/caldwell/shoprobes

Repeat multiple times.