Page Comparison

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1. Go out in the dome

   1. Go to the old control room (Colossus Control Room) and press each of these buttons:
      

   2. Go to the console and press "Reset".  You will hear a click as the breaks preventing the telescope from moving are released. There should be no messages on the TCS now.
      

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   3. Point the telescope to Zenith

      1. Go to the TCS, click the "Next" menu, click "Zenith", and click "Yes" on the warning message that pops up.

      2. Click "Go Next" at the top of the TCS window.

      3. Push the Autoslew button in the dome to move the telescope to the Zenith.

   4. Use the console to open the telescope mirror cover

   5. Set up IGRINS and telescope for taking calibrations

      1. Raise the east platform so you can reach the top of IGRINS

      2. Open the shutter on top of IGRINS is for taking flats

      3. Be sure to secure the window cover arm using the velcro.

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   6. Move the telescope to the Flat position

      1. Go to the TCS, click the “Next” menu, click “Flat”, and click “Yes” on the warning message that pops up.

      2. Click “Go Next” at the top of the TCS window.

      3. Push the Autoslew button to move the telescope to the Flat position.

      4. Use the yellow hand paddle to move the upper wind screen all the way down to reveal the full flat screen.

         

   7. Use the TCS to move the telescope dome to the “Park” position

      1. Go to the TCS, click the “Tools”, click “Park”, and click “Yes” on the warning message that pops up.

2. In the Observing Room:

   1. In the DTP on the ICC:

      1. Click the “FLAT-OFF” button below the K-band image plot.

         1. Click “Yes” on the pop-up that appears (this just fills in the Object Name and Exposure Time in the DTP)

         2. This will fill the Seq Bar with 10 x E frames, change the object name, object type, and set the exposure time.

      2. Change the exposure time to 20 seconds (if not already set to that).

      3. Change the Object Name to “FLAT 20s” (if not already set to that).

      4. When ready to take the FLAT-OFFs, click the “Start/Resume Sequence” button.

   2. Flat Off frames should take about 10 minutes to complete.  Computer will say "H finished", "K finished", “Sequence finished” when they are done.

3. Back to the dome to turn on the Flat lamps for FLAT ON frames

   1. Move the rolling stairs from their stowed location to on platform east under the telescope

      1. Ensure the location you place the rolling stairs is clear of the telescope

   2. Raise the platform using the yellow hand paddle until you will be able to reach the plug for the flat lamps on the side of the telescope

      1. !! Make sure you do not get close enough to bump IGRINS with the raising platform !!

   3. Plug the flat lamp power cable into the side of the telescope, see images below

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4. In the Observing Room:

   1. In the DTP on the ICC...

      1. Click the “FLAT-ON” button below the K-band image plot.

         1. Click “Yes” on the pop-up that appears (this just fills in the Object Name and Exposure time in the DTP)

         2. This will fill the Seq Bar with 10 x E frames, change the object name, object type, and set the exposure time.

      2. Change the exposure time to 20 seconds (if not already set to that).

      3. Change the Object name to “FLAT 20s” (if not already set to that).

      4. When ready to take the FLAT-ONs, click the “Start/Resume Sequence” button.

   2. Flat On frames should take about 10 minutes to complete.  Computer will say "H finished", "K finished", and “Sequence finished” when they are done.

5. Turning off Flat Lamps/stowing wind screen needs to be described tomorrow (written 20241113).

   1. Close the telescope mirror cover on the console so nothing falls on the mirror when moving the upper wind screen

   2. Move the upper wind screen back to its original position using the hand-paddle

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