FOCAS Operation Manual

Standard telescope config. for FOCAS Obs.

    1. Cs-Opt secondary
    2. Use ADC (in and sync)
    3. CAL HAL 2 (Th-Ar) 15mA
    4. Dome FF lamp 600W, 5.1A, 20-120V (voltage depends on FOCAS modes)
    5. (in most cases) With wind screen
    6. Note
      1. Standard setup means for almost all cases of the FOCAS observation.
      2. In some rare cases, ADC might be off and async.


SOSS startup


OWS1, 2, 3

    1. Log into UNIX WS OWS1, 2, 3 with userid u00???? + password
      1. Type userid and passwd in "welcome to WS-NAME" box with Subaru log mark on the right.
      2. Note:
        1. Each User ID and password are assigned for each observation (for each PI).
        2. Ask SS for them.
    2. Log into the SOSS system on OWS1, 2, 3 with observation id o00???? + password
      1. Click right button of the mouse on the root window of the workstation (at any place above the command launcher box at the bottom of the window), and the sub-menu shows up.
      2. Select SOSS login menu, and a new sub window shows up.

        OSS4-1-1[1].PNG - 6,192BYTES

      3. Type observation id and password in the new window.
    3. Input Observation group/Observer/Operator/Support Scientist in the next subwindow.

      OSS4-1-2[1].PNG - 4,133BYTES

      Observation group: e.g., S02A-059, depending on the observation
      Observer: PI et al. (e.g., Ohyama et al.)
      Operator: Telescope operator and Instrument operator
      Support scientist: e.g., Ohyama

    4. SOSS main menu (initial menu) window shows up.

      OSS4-2[1].PNG - 7,260BYTES

      1. Select Instruments Telescope monitor button on the SOSS  initial menu window.

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      2. On telescope monitor, click AG button on the upper right to activate the AG detail monitor.

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      3. Select Instruments monitor button on the SOSS initial menu window. Set it to the FOCAS mode by switching the TELESCOPE/FOCAS selection buttons on the monitor window.

        OSS4-8-1[1].PNG - 2,580BYTES

      4. Select Environment monitor button on the SOSS initial menu window.

VGW

    1. Log into UNIX WS VGW with user userid and password.
    2. Log into the SOSS system on VGW.
      1. With the same way as for the OWSs
      2. VGW requires your user account and a password for VGW only.
    3. Select VGW system button on the SOSS initial window menu.
      1. A big panel with many pieces of information appears.

        VGW4-1[1].PNG - 12,893BYTES

      2. Iconify it and wait. We do not need it during normal observation.
      3. Three skycat windows for AG/SH/SV appear on the upper display of VGW.
        1. Iconify SH and SV windows. We only need the AG window.
      4. One skycat windows for AG star selection appears on the lower display of VGW with a sub menu for listing the AG star candidates.
    4. Select skymonitor button on the SOSS initial menu window.
      1. Another window requesting proposal ID and password will show up.

      2. Another skycat window shows up on the lower display of VGW.

ANA

    1. Log into UNIX WS ANA userid u00???? + password.
    2. Log into the SOSS system on ANA
      1. Click right button of the mouse on the root window of the workstation (at any place above the command launcher box at the bottom of the window), and the sub-menu shows up.
      2. Select "SOSS (ANA only) login" panel, and a new sub window shows up.
      3. Type observation id and password in the new window.
      4. SOSS main menu window shows up.
        1. This menu is only for ANA, and is different from other SOSS initial menu.
        2. Press "FOCAS" button to launch the IRAF and IDL system for FOCAS.
          1. IDL system may frequently fail to be launched. Try another FOCAS button until the IDLDE window shows up.
        3. Press "ANA System" button for the MOS observation night. This program is very important for the MOS pointing, but will not be used if not for the MOS nights.

FOCAS Setup

  1. Software setup
    1. Log-on the KVM system with FOCAS01 account.
    2. Log-in the FOCAS UNIX system with falcon account.
    3. Startup all FALCON system.
      1. Click the "FCS" icon on the command launcher at the bottom of the FOCAS.
ICON
A panel with buttons will show up.
falconmenu
      1. Click "startup all" at the top.
        1. Wait for about an minute for the start up of the following programs
          1. CD, CE, M3 (+messia), NI, FT, and UI.
        2. All programs will be iconified besides UI and messia-log window.
        3. Finally UI window shows up
        4. Wait for another minute to see all the buttons in green.
UI
    1. Software connection check
      1. If "CCD power off" warning messages appear, dismiss them with "OK" button. No problems at this stage.
    2. CCD power check
      1. Turn the UI page to "CCD", and check the CCD power.
ui2
      1. Click on "CCD digital power".
      2. Click on "CCD analog power".
      3. Click on "VCHECK" button. Wait about 30 seconds to see the voltage "OK" status shows up on UI.
      4. Also see the "messia log" window (another terminal) to see zero bad channels.
    1. MOS pressure check
      1. Turn the UI page to "MOS detail", and check the MOS pressure.

      1. Check if MOS pressure is 670~700.
      2. Turn the UI page back to "Spectrograph", and click "MOS" button and push "DISMISS" button.
      3. Turn the UI page back to "MOS detail", and check the MOS pressure again.
      4. Check if MOS pressure is stable and around 670~700.
    1. MOS initialize
      1. Turn the UI page to "Spectrograph", and click "MOS" button.
      2. Click "INIT" button to initialize the MOS button.
      3. Wait 2-3 minutes till the MOS initialization process will finish.
        1. Do not move other parts while initializing the MOS.
      4. Set MOS names
        1. Click "Set Name" button and input new names.
        2. Click "Save name" button, and press "dismiss" to close the MOS panel.
    2. FOCAS pre-checks
      1. With pre-check macro
        1. Select "MACRO" at the top of the UI.
        2. Choose "macro/precheck.mac"
        3. Start macro and see how each component moves. It will take about 2 minutes.
      2. CCD image check
        1. Select "skycat" from the  button command launcher.
        2. From "file/open" menu of skycat, select "/data/FITS/FCSA000????.fits". The filename is shown on UI.
        3. Examine the CCD image on skycat.
          1. Correct image shows:
            1. almost constant (flat) images with counts of 9800-10000.
            2. There are some bad columns. Ignore them.
            3. RMS noise of images is around 4-6 when measured with "tool/pixel map/9x9" and "statistics on" of skycat tool.
          2. Check two images for chip 1 and 2.
          3. When finished, close "skycat" by selecting "file/quit" on the skycat.
      3. Manual check for MOS
        1. Select any MOS mask to install. Wait till it stops.
        2. Type MOS angle of "0.1" and wait till it stops.
        3. Select "NONE" to remove a mask.

Checklist before starting observation (in most cases before starting first FocusAG)

Telescope config.

    1. ADC in and sync
    2. Auto Z ON and sync
    3. Offset Z around 1.0
    4. Opt-Cas M2 is selected as M2
    5. Dome shutter is open
    6. M1 covers (including a cell cover) are open
    7. All dome lights are off
    8. Wind screen is on and sync (when wind speed is high)
    9. All telescope movable parts are ON and sync
      1. AZ, EL drive of Tel/Dome, InsRot, etc.

FOCAS config.

    1. All FALCON software is ready.
    2. Have sent GetAllStatus from UI.
    3. Names of replaced MOS and filters are registered properly on UI.
    4. Have sent MOS init command.
    5. CCD power ON and MOS air pressure is high enough.

Standard Observation Procedure per night

  1. Telescope setup (dome shutter, ventilators, M1 cover, ...)
  2. SOSS setup 
    1. See above for each WS startup.
  3. FOCAS setup
    1. MOS mask install
    2. FALCON startup and pre-checks FOCAS parts (wheel, shutter, CCD power, etc.)
    3. Change FALCON ID setup for MOS and filters after changing these parts.
  4. Hartmann test (FOCUSOBE)
    1. Set CAL ready
    2. Dome light off
  5. Take some biases (GETBIAS)
    1. If there are some time left. Take ~5 bias images of each binning settings for the night.
  6. Dome flat (GETDOMEFLAT: if observers request)
    1. Shutdown CAL
    2. Setup dome flat
    3. Open M1 cover
    4. Close dome ventilators to avoid straight light inside the dome.
  7. Sky flat (GETSKYFLAT: if observers request)
    1. Shutdown dome flat
    2. Open dome main shutter
    3. Move telescope at EL=80, and take some.
  8. FocusAG (FOCUSAG/FOCUSAGSequence)
    1. Telescope moves to EL=70 and AZ near the first target. Consider the AZ limit (+-270 deg).
    Standard stars (GetStandard)
      1. Sync windscreen when wind speed is high.
  9. Main target observations
  10. ... 
  11. FocusAG (around 22-24h)
    1. between the targets 
    2. Not at far after 24h 
    3. If possible, take several biases while taking AG images.
  12. ...
  13. Standard stars again (if observers request)
  14. Focus AG
    1. if time permits 
  15. Sky flat
    1. retract AG
  16. Dome flat
    1. Dome close
    2. All ventilators close 
    3. Point tel. to zenith
    4. Ask operators to move top screen at appropriate position. 
    5. Retract AG/CAL
    6. Turn the dome flat lights on 
  17. Shutdown
    1. Telescope shutdown 
    1. FOCAS shutdown
      1. Send MOS init command
      1. Turn CCD powers (both analog and digital lines) off

Hartmann テストマニュアル

0: Abstract command: FOCUSOBE を実行。
一回の Hartmann test で、4枚の画像が得られる。順番に、Hartmann shutter 1 の chip 1, 2, Hartmann  shutter2 の chip 1, 2
1: ANA にて、SOSS menu から FOCAS をクリックし、focasmenu を起動。Hartmann test を選択。
2: Hartmann shutter 1 で撮った画像 (Chip 2) を選択する。
3: Hartmann shutter 2 で撮った画像 (Chip 2) を選択する。
4: 縦長の画像が表示される。画像の表示レベルがおかしくて line がうまく見えないときは、intensity cut level (high/low) を調節する。
5: 何個の輝線で測定するかを入力する。2以上を選択すると、各スリットでの測定結果の平均の値が返される。通常2程度を選ぶ。
6: 画像上で、1つ目の輝線の位置をクリックする。このとき、マウスのX座標のみが考慮される。
7: 選択したX座標のY方向のプロファイルが表示される。調べる輝線プロファイルの左右を、それぞれ一カ所クリックする。
8: 自動的に、そのプロファイルのY方向の位置が Chip 1, 2 の両方について計算される。
9 複数の輝線を選択したときは、6から繰り返す。
8: Chip 1 に対して、同様の測定を行う。1: の Hartmann test の選択から始める。
9: 必要に応じて、Chip2 の計算値、Chip1 の計算値、Chip1, 2 の平均値を計算し、適切な値を FALCON UI のZの値に加える。
10: 必要であれば、測定を繰り返す。0: から始める。

TIPS:
1: Z値のずれ量が大きいとき (>0.05) の時は、Zを調整した後にもう一度 FOCUSOBE を実行し、2回目の測定のZの移動値が1回目に対して十分小さくなることを確認する。
2: 通常、long slit や imaging の場合は chip2 を主に使うので、chip2 の Hartmann test の結果のみを採用し、Zを求める。一方、MOS の場合は chip 1, 2 両方をまんべんなく使うので、Chip1, 2 のそれぞれに対して測定を行い、結果を平均して用いる。
3: 厳密には focus は視野の場所ごと(光軸付近、視野外周部、など)に異なる。したがって、その日の観測でチップのどのあたりを主に使うかを考え、その付近に重点的に焦点を 合わせこむ。通常の long slit では、chip 2 の内側(視野中央より)にあわせる。MOS では、chip1, 2 の視野中央部あたりを測定し、その平均を用いる。


Some important cautions in FOCAS operation (べからず集)

  1. Avoid MOS changer movement below elevation of 30deg.
  2. After restarting "CD" software, you should issue "MOS INIT" command before moving any slits.