Post FPA taken down science procedures

Overview

These tests are intended for moving us from the FPA taken down to full science operations.

Closed dome engineering tests

Getting ready

• Archive the old best current values for the markers and be ready to create new marker position see HetProcedures/RA/markers

Measure the position of the BIB IFU center

Purpose: We want to know the center of the BIB IFU for the tests that are needed involving the BIB

Procedure:

• Open the PFIP shutter
• insert the FCU
• select a lamp and fiber combination to get good flux in the BIB. Be sure to open the FCU shutter with a decent exposure time.
• Save some BIB images.
• Using ds9 measure the center of the IFU. This can be done with circle markers and then looking at the marker info.
• be sure the last results are saved under "old results on the wiki"
• update the wiki value for the BIB center.
• This should be the CRPIX value for the BIB as well so these numbers should be given to the software team for updating in TCS.

Measure the position of the GC1 and GC2 center

Purpose: We want to know the center of the Guider Coherent Bundles for the TO setup scripts.

Procedure:

• insert the FCU
• select a lamp and fiber combination to get good flux in GC1 and GC2.
• Save some GC1 and GC2 images.
• Using ds9 measure the center of the Coherent Bundle Diamond. This can be done with square markers rotating them using the marker info in DS9; the center of the marker is what we want.
• be sure the last results are saved under "old results on the wiki"
• update the wiki value for the GC1 and GC2 center.
• update the TO setup scripts (to be added by Nathan and Amy).
• This should be the CRPIX value for the Guiders as well so these numbers should be given to the software team for updating in TCS.

Testing of the HPF-ACAM IFU positions

Purpose: We want to know if the angle for guiding has changed on the HPF ACQ and the centers for setting up when doing HPFACQ regular setups.

Procedure:

• Open the PFIP shutter
• insert the FCU
• select a lamp and fiber combination to get good flux in the HPFACQ. Be sure to open the FCU shutter with a decent exposure time.
• Save some HPFACQ images.
• Notify Joe Ninan that the images have been saved and what the image name is.
• Measure the position for the center of the HPFACQ direct field
• Update the wiki and the code regularhpfsetup and inform Randy of the new position for the marker file.
• This should be the CRPIX value for the HPF ACAM as well so these numbers should be given to the software team for updating in TCS.

To measure yourself:

• Using ds9 measure the center of both IFUs. This can be done with circle markers and then looking at the marker info. You will need to play with the scale to get the off axis one to look like a circle due to the coma of the camera.
• be sure the last results are saved under "old results on the wiki"
• update the wiki value for both IFU centers.
• Note how much rotation is required from the central one to the new off-axis position and this is the delta angle to report to the TCS team.

We need to get from Joe the procedure for updating the HPF-ACQ orientation, ie. what sign is what...

Twilight

Standard science twilights

LRS2 and VIRUS twilights should be taken at the center of track position. Please follow the start of the night procedures on the wiki.

Creating new Guider flats at twilight

Store images on Guider 1 & 2 in all filters (B, g, r, i`, Clear) during twilight, for use in generating new flat fields. These can be taken at the same time as the LRS2 or VIRUS twilight spectra are being taken.

Full instructions are here: HetProcedures/RA/probecals and include how to take the images, how to process them into flats, and how to install them (either temporarily or permanently) into TCS.

Dome Open Tests

Test the WFS focus and theta-phi

Purpose: Make sure that the WFS1 and WFS2 still produce good results.

Procedure:

• Setup on a star with a guide star in GC1 and GC2 and good WFS stars in both WFS.
• Get to best focus and best theta and phi with one of the WFS.
• Make sure that the WFS corrections agree within <0.04 mm in focus and <10" in theta and phi
• Move out of focus (above and below) by ~0.10 mm.
• Look at the images on the guiders and see if there is any significant coma
• Look at the images and make sure they are about the same size, ie. we are at best focus.

Testing of the ACAM position

Purpose: We want to see if the ACAM position changes with respect to the IHMP over time. We want this data every night and when ever we get an unusually high or low temperature. It would be good to vary the Az as well.

Determine the orientation of the ACAM with respect to the sky:

• Select a 14th mag star in a reasonably rich field with shuffle for the IHMP
• Setup as if it were a blind setup LRS target
• Save several images in each filter g,r,i, for the ACAM.
• Save several deeper images as well.
• Run Steve's software to determine the orientation (or ask Steve to run his software).

Determine the Center of the BIB:

• Select a 14th mag star in a reasonably rich field with shuffle for the BIB
• Setup on the very center of the BIB field of view and save an image note any differences from the wiki center position.
• Guide on one of the guide probes
• Put in the ACAM and save an shallow image with the target star not saturated.

{{{ Measure the star position on the acam:

ds9_imstats 20190401T115437.0_acm_sci.fits Y }}}

• Report on the position of the BIB in the night report and on NightOperations/Commissioning/Results
• Save a deeper image which should show more than a dozen stars.

Determine the Center of LRS2-B

• Select a 14th mag star in a reasonably rich field with shuffle for the LRS2-B
• Setup on LRS2-B and start guiding on one of the guiders
• Take LRS2-B spectrum, probably 60 seconds.
• Adjust the position so that the star is at the center of LRS2-B IFU using lmap until the offsets are less than 0.3"

syscmd -T 'Guider1_offset_fiducial ( dx_asec=-0.01,dy_asec=0.55,compensate="false")'

• Confirm the star is at the center of the IFU by taking a spectrum.
• Once it is as the center of the IFU put in the ACAM and take a shallow image so that the star is not saturated.
• Report on the position of the LRS2-B in the night report and on NightOperations/Commissioning/Results
• Take a deeper image so that there are large number of stars.

Determine the Center of LRS2-R

• Select a 14th mag=== Testing of the ACAM position === star in a reasonably rich field with shuffle for the LRS2-R
• Setup on LRS2-R and start guiding on one of the guiders
• Take LRS2-R spectrum, probably 60 seconds.
• Adjust the position so that the star is at the center of LRS2-R IFU using lmap until the offsets are less than 0.3"
• Confirm the star is at the center of the IFU by taking a spectrum.
• Once it is as the center of the IFU put in the ACAM and take a shallow image so that the star is not saturated.
• Report on the position of the LRS2-R in the night report and on NightOperations/Commissioning/Results
• Take a deeper image so that there are large number of stars.

Determine the Center of the HPFACQ IFU on the ACQ:

• Select a 9-10th mag star with shuffle for the regular setup (600)
• Setup on the very center of the HPFACQ field of view and save an image.
• Guide on one of the guide probes and make sure that the star is still at the center of the HPFACQ
• Put in the ACAM and save an shallow image with the target star not saturated.
• Report on the position of the HPFACQ regular setup in the night report, on the markers wiki page and on NightOperations/Commissioning/Results

Determine the Center of the side HPFACQ IFU on the ACQ:

• Select a 9-10th mag star with shuffle for the side setup (610)
• NOTE that you probably will not be able to guide on the side CB because the orientation is different than the center IFU (600).
• Make telescope offsets with the TCS hand paddle to get it close to the center of the side CB.
• Guide on one of the guide probes and make sure that you use the PID loop.
• Adjust the fiducial position on the active guider to get the star centered well on the side CB.
• Put in the ACAM and save an shallow image with the target star not saturated.
• Report on the position of the HPFACQ regular setup in the night report, on the markers wiki page and on NightOperations/Commissioning/Results

These tests need to be done at least 5 times to get a very good average.

Data reduction

The ACAM image orientation on the sky should come directly from Steve's ACAM orientation analysis. His code is rotated by 90 degrees so subtract 90 from the value that comes from Steve's software. This goes into the Shuffle cfg file as "acam". Follow the instructions for updating the shuffle.cfg file: HetProcedures/RA/Shuffle

On any ACAM image set a circular marker at the LRS2-B and LRS2-R positions and make the radius 158.1 arcseconds in size (as set by the fplane file). The intersection of these two cicles is the new value for the IHMP. Update the wiki and the shuffle.cfg file (acam_x_origin and acam_y_origin; Follow the instructions for updating the shuffle.cfg file: HetProcedures/RA/Shuffle). This is also the center of the TCS pointing should be the CRPIX values for the ACAM, ask the software team to update this for the ACAM. Next take one of the ACAM images from the LRS2-B position test and run the shuffle for this object's setup with the new shuffle.cfg file. Adjust the acam angle in shuffle.cfg until the stellar positions in the fake ACAM match the real ACAM. The for the same object run shuffle but for the LRS2-R position. If the object does not fall at the previously determined value of the LRS2-R then adjust the fplane value in the shuffle.cfg file and rerun shuffle until it does. Wtih these positions now locked in ask Greg to submit the new shuffle.cfg file to svn. Once it is updated download the new version and make sure that Sergey downloads the shuffle.cfg file to the correct location and re-run shuffle for shuffle for all active targets, and standards.

We also need to update the position of the HPFACQ on the ACQ. Update the wiki and change the regularhpfsetup script and check into svn.

We also need to update the position of the directHPF on the ACQ. We have need to get the script to do this from Joe.. The value goes on the wiki and in the directhpfsetup script.

In theory the fplane should not need updating but the offset from from HPFACQ to directsetup might. Place this new value in the regularhpfsetup script and check into svn.

check the offset from LRS2-B to LRS2-R

Purpose: See what the offset is to get accurately from LRS2-B to LRS2-R position on the ACAM. This need not involve the LRS2 instrument at all but does require that we have the new updated LRS2-B and LRS2-R ACAM positions.

Procedure:

• Setup on LRS2-B ACAM position
• Take a final ACAM position to confirm we are in the right place.
• offset from B to R using mgp
• Take an image with ACAM and see if we are in the right place.
• Have the TO offset from the current star position to the ideal position and take note of the offset size.
• move back to LRS2 B
• try a modified mgp poff command with the old offset + correction.
• repeat until it works
• try the oposite offset and see that it works from R to B.

Try this with another star to confirm.

Once you have a new value give it to Sergey to be installed in mgp and also update the wiki.

Measure the guider zero points

In order for the guiders to hit the correct stars once shuffle is updated you need to adjust the probe zero points in TCS.

Procedure:

• Setup on LRS2-B on the ACAM for a 14th mag star
• Measure the offset needed to center the guide star at the center of the guider IFU
• Measure the total offsets needed to center the WFS stars (can use the offsets from the guiders as a first best guess)
• For this setup save the offsets for all of the probes

Do this procedure at least 10 times and then median the results for each probe. Enter these values into the spreadsheet on this page. In a new date/worksheet. Confirm that the current values are correct by looking at TCS code. Update these values with the new values.

Testing the Guider orientation

Purpose: We would like to nail down the Guider orientation angles before the FPA. This is not critical but this is a test we will be doing after so having a baseline would be helpful. The goal is to have 2 or more stars (even if faint) in a guider. It is ok if the guider only one guider gets this per track. The goal is to get at least 10 different images on sky with 2+ stars.

Procedure:

• Go to a very rich field
• Setup on stars selected by shuffle or LRSstars
• Saves 10 images with the guider that has 2+ stars in the field of view.
• Report this in the time in the RA report and in an e-mail to Gary and Matthew.

Repeat until you get 10 fields on both GC1 and GC2.