20160913 Commissioning Plan

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

Highest Priority: Do any targets in the main queue from HTOPX. Be sure to pay attention to priority. There are high priority ENG16-2-666 targets. For ENG16-2-666 please put fit 2 entries into a single track by starting near the beginning of the track.

Closed dome engineering for bad weather:

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 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:

Test offsetting from LRS2-B -> R using GC1 & ACAM

Purpose: We want to see if the position of the star in the GC 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 the 3 steps above but placing the star near one of the corners of the GC image.

Repeat this test several

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.