Using the Data Taking Package (DTP)

Set up Guiding using the SCV.

Click the “From TCS” button and the “Apply” button in box 4.

1. This will reset several of the fields across the DTP GUI and grab the coordinates for the reference pixel in the SCV to put into the IGRINS headers.

2. Ensure the “Auto-update” box is checked in box 4.

In box 3 input the observer name, object name and select the object type, and frame type.

1. The object name should be a SIMBAD searchable target name, unless not available.

2. The object type during observing is usually either TAR (target) or STD (standard).

3. The frame type will be A/B or ON/OFF depending on the type of object being observed.

In box 6 input the correct exposure time for a single frame.

1. Fowler sampling should always be set to 16 for standard observing (discuss with the IGRINS Team if you feel like this value should be changed for your observations).

2. Repeat should stay at 1

Input the observing sequence into box 7 (there are several ways to do this):

1. Type A/B’s in the box in the nod order needed to observe the target

2. Click the “ABBA”, “AB”, or “?” buttons in box 8 to match your observing sequence.

   1. Observers can click these buttons multiple times and the existing sequence in box 7 will be added to (e.g. clicking “ABBA” 3 times will fill box 7 with “ABBAABBAABBA”)

   2. The “?” button will pause the DTP when reached in the sequence which can be good for small guiding adjustments or checking counts for raw frames to verify the target exposure time/sequence length to reach the required SNR (the Quicklook package applet is also helpful for this).

Once the desired sequence is typed in box 7, click “Start/Resume Sequence” in box 8.

That’s it! Now monitor guiding with the SCV during acquisition!