Changes between Version 13 and Version 14 of PublicPages/MayallZbandLegacy/NotesforObservers/Domeflats


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Timestamp:
Jan 30, 2017 2:59:38 PM (8 years ago)
Author:
Benjamin Alan Weaver
Comment:

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  • PublicPages/MayallZbandLegacy/NotesforObservers/Domeflats

    v13 v14  
     1= Dome Flats for MzLS =
     2
     3[[PageOutline]]
    14
    25== Important Safety Note ==
    36
    4 '''1. Only NOAO staff are allowed to take domeflats during the afternoon'''
    5 
    6 '''2. Only Electronic Maintenance personnel or OAs are allowed to move the telescope or operate mirror covers'''
    7 
     7 1. '''Only NOAO staff are allowed to take domeflats during the afternoon.'''
     8 1. '''Only Electronic Maintenance personnel or OAs are allowed to move the telescope or operate mirror covers.'''
    89
    910== Afternoon Domeflat Instructions ==
    1011
    11 0.0 Make sure the instrument control is not turned on.
    12 
    13 1. Have electronic maintenance open the mirror covers, turn on 4MAPS, and move the telescope to the great white spot.
    14 
    15 2. At 4pm, check to make sure there is no one in the dome and turn off the lights in the dome and in the visitor gallery. The latter are at the end of the control room by the door nearest the elevator.
    16 
    17 3. Check to make sure the dome is dark.
    18 
    19 4. Start up MOSAIC3 using the MOSAIC3 GUI:
    20         - First “Start Cameras”; an xterm pops up and executes a bunch of stuff. Wait for it to finish and hit “return” to dismiss it
    21         - Next “Start Mosaic” and wait for all the stuff to come up. This takes a while. Rearrange the innumerable windows as desired.
    22 
    23 5. Once the system is up, set the project ID:
    24         On the NGUI window, press the "Set Project" button and fill out the relevant information. For example:
    25 {{{
     12 1. Make sure the instrument control is not turned on.
     13 1. Have electronic maintenance open the mirror covers, turn on 4MAPS, and move the telescope to the great white spot.
     14 1. At 4pm, check to make sure there is no one in the dome and turn off the lights in the dome and in the visitor gallery. The latter are at the end of the control room by the door nearest the elevator.
     15 1. Check to make sure the dome is dark.
     16 1. Start up MOSAIC3 using the MOSAIC3 GUI:
     17    - First “Start Cameras”; an xterm pops up and executes a bunch of stuff. Wait for it to finish and hit “return” to dismiss it
     18    - Next “Start Mosaic” and wait for all the stuff to come up. This takes a while. Rearrange the innumerable windows as desired.
     19 1. Once the system is up, set the project ID: On the NGUI window, press the "Set Project" button and fill out the relevant information. For example:
     20    {{{
    2621Principal Investigator: Arjun Dey
    2722PIs Email Address: dey@noao.edu
    … …  
    3227Telescope System: KPNO Mayall 4m
    3328Science Instrument: Mosaic 3
    34 }}}
    35 6. Make sure the system came up OK:
    36         - in one of the mosaic3 xterm windows, type:
    37 {{{
     29    }}}
     30 1. Make sure the system came up OK:
     31    - in one of the mosaic3 xterm windows, type:
     32      {{{
    3833> cd exec
    3934> ./ZERO.sh
    40 }}}
    41         - when the zero is taken an displayed on the ximtool Real-Time Display, use the IRAF window to check the rms on each amplifier:
    42 {{{
     35      }}}
     36    - when the zero is taken an displayed on the ximtool Real-Time Display, use the IRAF window to check the rms on each amplifier:
     37      {{{
    4338cl> cd /data2/observer/20160211 (or whatever the directory is)
    4439cl> mscstat mos3.60123,fits (or whatever the filename is)
    45 }}}
    46         The stddev column should have values that are all between 4 and 10 adu. If it looks fine, go to step 7.
    47         If the stddev is larger than this on any amplifier (when it is bad, it typically has values of 40 - 2000), it means there is a problem and you need to reset and reinitialize the ccp.
    48         If this happens, then in the mosaic3 xterm window type:
    49                 {{{
     40      }}}
     41      The stddev column should have values that are all between 4 and 10 adu. If it looks fine, go to the next step.
     42    - If the stddev is larger than this on any amplifier (when it is bad, it typically has values of 40 - 2000), it means there is a problem and you need to reset and reinitialize the ccp.
     43      If this happens, then in the mosaic3 xterm window type:
     44      {{{
    5045> nocs reset ccp
    5146> nocs init ccp
    52 }}}
    53         and take two consecutive zero images:
    54                 {{{
     47      }}}
     48      and take two consecutive zero images:
     49      {{{
    5550> ./ZERO.sh
    5651> ./ZERO.sh
    57 }}}
    58         The first zero will look weird with a lot of saturated pixels. That is “normal”. The second zero should be OK. In the IRAF window, check the second xero using mscstat:
    59                 {{{
     52      }}}
     53      The first zero will look weird with a lot of saturated pixels. That is “normal”. The second zero should be OK. In the IRAF window, check the second xero using mscstat:
     54      {{{
    6055cl> mscstat mos3.60125.fits (or whatever the filename is)
    61 }}}
    62         If this is OK, then you are all ready to go.
     56      }}}
     57      If this is OK, then you are all ready to go.
     58 1. Take 11 zeros:  In the exec directory on mosaic3, type:
     59    {{{
     60> ./ZERO11_MzLS.sh
     61    }}}
     62    This takes about 6 minutes to complete
     63 1. Turn on the dome flat-field lamps: Launch the “Flat-Field Lamp” gui which is on the right side of the left hand screen on mayall-2 Turn on the low-dome flats and turn them up to maximum (100%)
     64 1. Take the domeflats: In the exec directory on mosaic3 type:
     65    {{{
     66> ./DFLATS_zd_MzLS.sh
     67    }}}
     68    This will take 11 domeflats in about 12 min. The counts should be ~18,000-20,000 adu.  NOTE: On the December run, counts in the standard 15-sec flats were closer to 12k.  The script DFLATS_20sec_MzLS.sh will do 20sec exposure times, yielding the desired number of counts.
     69 1. When the domeflats are done, turn off the dome flat field lamps.
     70 1. Take 11 zeros: In the exec directory on mosaic3, type:
     71    {{{
     72> ./ZERO11_MzLS.sh
     73    }}}
     74    This takes about 6 minutes to complete
     75 1. Ask the EM tech to return the telescope to zenith and close the mirror covers.
     76 1. Shutdown the mosaic and camera software:
     77    - Stop MOSAIC (gui button on MOSAIC3 gui)
     78    - Stop Camera (gui button on MOSAIC3 gui)
     79 1. Make sure you did the previous step!
     80 1. Off to dinner! Yum yum!
    6381
    64 7. Take 11 zeros:
    65                 In the exec directory on mosaic3, type:
    66 {{{
    67 > ./ZERO11_MzLS.sh
    68 }}}
    69                 This takes about 6 minutes to complete
    70 
    71 8. Turn on the dome flat-field lamps:
    72                 Launch the “Flat-Field Lamp” gui which is on the right side of the left hand screen on mayall-2
    73                 Turn on the low-dome flats and turn them up to maximum (100%)
    74 
    75 9. Take the domeflats:
    76                 In the exec directory on mosaic3 type:
    77                 {{{
    78 > ./DFLATS_zd_MzLS.sh
    79 }}}
    80         This will take 11 domeflats in about 12 min. The counts should be ~18,000-20,000 adu.  NOTE: On the December run, counts in the standard 15-sec flats were closer to 12k.  The script DFLATS_20sec_MzLS.sh will do 20sec exposure times, yielding the desired number of counts.
    81 
    82 10. When the domeflats are done, turn off the dome flat field lamps.
    83 
    84 11. Take 11 zeros:
    85                 In the exec directory on mosaic3, type:
    86                 {{{
    87 > ./ZERO11_MzLS.sh
    88 }}}
    89                 This takes about 6 minutes to complete
    90 
    91 
    92 12. Ask the EM tech to return the telescope to zenith and close the mirror covers.
    93 
    94 13. Shutdown the mosaic and camera software:
    95                 - Stop MOSAIC (gui button on MOSAIC3 gui)
    96                 - Stop Camera (gui button on MOSAIC3 gui)
    97 
    98 14. Make sure you did 13.
    99 
    100 15. Off to dinner! Yum yum!
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