This is a summary of normal IGRINS use for observers at the McDonald 2.7m telescope 

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1. On Atlas

   1. Log in with IGRINS account.

      1. Ask for username and password if you do not already know it.

   2. Open Browser (Firefox has all of the bookmarks).

      1. In the IGRINS bookmarks folder open the following:

         1. SNR Quicklook (http://192.168.2.2/?obsdate=date): For looking at the spectra taken throughout the night to verify observations are reaching the required SNR. Note: The date at the end of the link must be updated to the current observing date from the bookmarked date.

         2. Nightly Observing Record (https://igrins-status.firebaseapp.com/night/date) : Keeps track of all of the IGRINS observations taken in a night. Note: The date at the end of the link must be updated to the current observing date from the bookmarked date.

         3. House Keeping Package: Keeps track of the instrument health--always--monitor to ensure all of IGRINS parameters are within acceptable ranges.

         4. IGRINS Digital Night Log: A google spreadsheet that will auto populate throughout the night per frame taken.

         5. What Target is IGRINS Observing?: Tracks the coordinates put into the TCS, the position angle of the slit, and over-plots the slit onto a 2MASS K-band image of the target. Best if used in parallel with a finder chart, but can be helpful for verifying rotation orientation and pointing.

      2. Open weather related monitoring pages from the McDonald weather links tab in the bookmarks. We recommend the Mt. Lock Live Weather, the McDonald Observatory Clear Sky Chart, and AccuWeather or Windy for cloud monitoring.

   3. Open the VNC Viewer to view the IGRINS computer.

      1. Applications → Internet → VNC Viewer

      2. Connect to the IGRINS ICC. Should only require a double click, but you can follow the steps below if needed.

         1. From atlas use the internal ip address 198.168.2.2 but if connecting from outside the network use the external ip address (might need to use McDonald VPN): 198.214.229.87

         2. Port: 5902

         3. Username: admin

         4. Password: [ask someone if you don’t know it-standard IGRINS password]

      3. Input the IGRINS computer password.

2. On the VNC Viewed IGRINS Computer:

   1. Open a terminal window.

      1. > cd ~/igrins_admin

      2. > sh ./run_icshub.sh

         1. The IGRINS Hub should appear--verify that the date of observation is correct.

         2. If “Check Mount” is Failing:

            1. Open a new terminal window.

            2. > cd ~/igrins_admin

            3. sh ./mntrun

            4. Enter the IGRINS computer password.

            5. Click the “Check Mount” button in the IGRINS Hub, which should hopefully return the status to “Okay”.

               1. If “Fail” again: remote into IGRINS detector computers. If not able to login [add link], check the computers are turned on in the electronics rack. If they are turned on, there is likely an issue with the fiber optic cable--contact observing support.

         3. Click “run HKP” & verify the health of the instrument.

   2. Open a new terminal window.

      1. > cd ~/igrins_admin

      2. sh ./run_all_scripts.sh

         1. The terminal for this should take up the entire length of the screen--it runs multiple scripts with outputs that are hard to read otherwise

         2. This script runs multiple scripts that allow for the use of the firebase apps that update throughout the night (see the IGRINS Bookmarks tab on Atlas Firefox)--these improve quality of life greatly but are not strictly required.

   3. Open a new terminal window.

      1. > cd ~/igrins_admin

      2. sh ./run_file_transfer_daemon.sh

         1. This script manages the file transfer between the ICC and the IGRINS computer. Do not close the pop-up window!

3. On Atlas, Launch the TCS.

4. In the IGRINS Hub click “run TCSProxy”.

   1. Verify that the top of the pop-up says “TCSProxy HJST 107””.

   2. Verify that the coordinates from TCSProxy match those in the TCS window on Atlas.

      1. If all of the coordinates read as 0’s, then the Colossus computer might have failed. Phone for observing support locally.

5. In the IGRINS Hub click “run SCP” and “run DTP”.

   1. On the SCP (Slit Camera Viewer), click “Single” in the Detector Control.

      1. Verify that a slit camera image is produced.

   2. On the DTP (Data Taking Package) click “Test Exposure” on the bottom left under the K-Band image box

      1. Verify that an image is produced in H- and K-Band

      2. Verify that the TCSProxy coordinates are not all 0’s (that the connection between IGRINS and TCS is good).

         1. If all coordinates read as 0’s, then the Colossus computer might have failed. Phone for observing support locally.

   3. If for whatever reason, either of these fail, phone for help!

6. To enable sounds from the IGRINS observing computer in the observing room:

   1. Open a terminal in Atlas

   2. > cd igrins_tools

   3. > cd play_msg

   4. > /home/igrins/miniconda3/envs/igos3/bin/python play_msg.py (running the script the enables the notification sounds).

7. On the Atlas computer open the following:

   1. The MONET sky camera (pink “SKY” button pinned to the taskbar).

   2. The HJST dome floor camera (pink “HJST” button pinned to the taskbar).

   3. The HJST slit camera (pink “SLIT” button pinned to taskbar).

   4. The Night Report (enter name info and add report content throughout the night).

Taking Flats (~1 hour needed)

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The worklists are organized by magnitude, so if you notice there are not many available A0V stars nearby your target try using a fainter magnitude worklist!

300s SKY Frame each night

The PLP requires a 300s SKY frame for deriving the wavelength solution. To take a SKY frame:

1. Move the telescope to the zenith.

2. Click SKY at the bottom of the DTP window, next to the other calibration buttons.

3. Click ‘Start Sequence’ to take one E exposure.

4. Continue observing after you have the SKY frame.

Changing the slit Position Angle

Closing Procedure

Some of these things can be done in any order, and some things should be done in an explicit order. When the order doesn’t matter, the text is in blue.

1. Move the telescope to Zenith

   1. Using the TCS select Next → Zenith and click yes on all of the pop-up windows

2. Close the IGRINS window cover

   1. Rotate IGRINS back to a PA of 90 degrees, if needed

   2. Raise the east platform using the yellow hand paddle

   3. Close the IGRINS window cover using the handle

   4. Be sure to secure the handle using the velcro strip

3. Stow the telescope

   1. Using the TCS select Next → Stow and click yes on all of the pop-up windows

   2. Press and hold the button on the dome floor console to move the telescope to the stow position

4. Close the Mirror Window Cover

   1. Using the button on the Colossus Console (the console in the dome with all the red buttons). You should hear the motor stop when it is fully closed.

5. Close the dome

   1. Using the button on the Colossus Console. There will be a loud sound when it finishes closing.

6. Put any wind screens that are over the dome slit back to their stow positions using the handpaddle

7. Park the dome

   1. Using the TCS select Tools → Park Dome and click yes on all of the pop-up windows

8. Close the dome doors

9. Close the dome vents

   1. Using the control panel on the East side of the dome near the door

10. E-stop the telescope

    1. Using the button on the Colossus Console

11. Turn on the passage lights (only once dome is closed fully)

    1. Using the button on the Colossus Console

12. From the control room

    1. Log-out of ATLAS

       1. Click the power button on top right hand side of the lower monitor

13. Turn off the heater in the observing room

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