>obssys - defines aliases etc... >startobssys - fires up observing system[this involves the following sequence of commands which should all be called automatically from the startup script
>talker -n TALKER-SYS & >sccd /dev/term/b005 MOSAIC & >mcad & >dasp INT 1 & >tcs & >wfcgui-go &Occassionally the gui interface self destructs on startup and if this happens typing >wfcgui-go & will cure the problem.]
">dasload lpss15"typed in the pink xterm window will reconnect the DAS system to it.
>source .login >obssys - defines aliases etc... >startobssys - fires up observing system and starts autoguider display >shutdownobssys - finish off session cleanly
>object name ra dec equinox - >add >gocat name - to move telescope to object
eg. >object JQ1 14 05 13.4 -13 0 5 J2000 >add >gocat name
>cmd TCS AUTOGUIDE ON x y - guide on at position x,y on autoguider CCD default is to specify x y = -1 -1 which cause A/G to guide on current guide star location >cmd TCS AUTOGUIDE OFF - turn guiding off >focus 45.5 - set telescope focus >rotate sky 180 - move PF rotator to 180 degrees [default] >gocat 12+30 - go to pointing grid star assuming ptgrid.cat is part of the user catalogue in $OBSSYS/etc/tcs.cat
>focusrun arg1 arg2 arg3 arg4 arg5 - procedure for doing a focus run The arguments are: arg1 - no. of images to take arg2 - separation of images in arcsec N-S direction arg3 - focinc, ie. focus increment (0.1 average seeing 0.05 good seeing) arg4 - focus start position (tube temperature 4 deg current best focus with R filter is 45.5) arg5 - integration time (best if >= 5s) The last image is double spaced. After deciding on best focus use TCS focus command (as above) to set telescope focus.
>wfcmdb - enable access to WFC filter database (eg. set telescope focus offsets)
>cmd MCA RESET - to update the volatile use of the database and enable the changes.
__________________________ inside edge | Bits 0 through 5 | outside edge -------------------------- where a set bit is a raised part of metal and the least significant bit is to the left.
----------------------------- | | | | | | | * 1st foc | | * | | * | | * | | | | * last foc | | | | | -----------------------------
lpar starfoc images = "r47649" List of images (focus = "45.3") Focus values (start focus value) (fstep = ".1") Focus step (nexposures = "7") Number of exposures (step = "40") Step in pixels (for 15 arcsec step) (direction = "-line") Step direction (gap = "end") Double step gap (coords = "mark1") Object coordinates (display = yes) Display images? (frame = 1) Display frame to use (level = 0.5) Measurement level (fraction or percent) (size = "FWHM") Size to display (beta = INDEF) Moffat beta parameter (scale = 0.375) Pixel scale (for loral ccds) (radius = 15.) Measurement radius (pixels) (sbuffer = 2.) Sky buffer (pixels) (swidth = 2.) Sky width (pixels) (saturation = 65536.) Saturation level (ignore_sat = no) Ignore objects with saturated pixels? (iterations = 2) Number of radius adjustment iterations (xcenter = INDEF) X field center (pixels) (ycenter = INDEF) Y field center (pixels) (logfile = "logfile") Logfile (imagecur = "") Image cursor input (graphcur = "") Graphics cursor input (mode = "ql")
>setenv GSC_DATA /soft/cats/hstguide.sun - pointer to the HST catalogue file >setenv PGPLOT_FONT /star/etc/grfont.dat - an interim bodge >alias gsc_apm '/home/mike/soft/apm/gsc_apm'
>gsc_apm RaDec="10 30 0 -1 0 0" Rotpos=180 Equinox=J2000 >gsc_apm Rotpos=90 Equinox=B1950 RaDec="21 30 11.3 12 10"
>gsc_apm
>gsc_apm RaDec="10 30 0 -1 0 0" Rotpos=180 Equinox=J2000 >gsc_apm Rotpos=90 Equinox=B1950 RaDec="21 30 11.3 12 10"
Rotator angle [180?] Do you want to impose magnitude cut ? [N] Do you want to precess input coordinates to J2000 ? [N] Field Centre:(h,m,s,d,m,s) 12 0 0 0 0 0 File: gsc.out already exists - clobber ? [Y] Catalogue Ra limits = 8963072 9001638 Possible guide stars (also listed in gsc.out) Catalogue no. Ra Dec Magn Guide X Guide Y 49320270 11 59 44.965 - 0 25 11.57 13.6 1512.7 20.1 49320404 11 59 48.562 - 0 21 11.56 14.6 1367.0 668.0 49320532 11 59 56.012 - 0 19 22.73 15.2 1065.4 961.7 49390619 12 0 0.230 - 0 19 21.36 12.6 894.7 965.4 49390146 12 0 18.344 - 0 23 41.42 15.2 161.2 263.4 Total no. catalogue stars read in = 161 Do you want plot E-W direction reversed ? [N] Do you want to alter default line width ? [N] Graphics device/type (? to see list, default /NULL): Do you want another plot ? [N]
>a2ps -1 19970525.MINE > 199702525.psif you want a readable printed copy.
> obssys - sets up aliases etc.. [menu] - select item 8 ie. WFC option > startobssys
GANTRY> change R - filter name or number, eg. R, 3
GANTRY> rotate sky 180 - rotate PF top end to 180 degrees
GANTRY> wfcshutter open GANTRY> wfcshutter close
GANTRY> logout
>cmd [options] D-task [action arguments]
-g which gets information about D-task -o obey action [default] eg. >cmd -g TCS POSITION - get information about telescope
>cmd MOSAIC SCCD-INIT MOS1
>filter R - change to R filter >run exp-time ["title"] - do a science run >bias - take a bias frame >glance - glance frame >abort - terminates active run without saving data [do not use if CCDs are reading out] >finish - terminate exposure and readout >dasreset - restarts data aquisition subsystem after fu's >cleanup - clear up after system hang up before restarting
CCD Gain e-/ADU Readout noise e- Full Well e- #2 1.6 14 80,000+ #3 1.45 13 80,000+ #4 1.4 17 60,000
CCD U B V R I Z #2 23.9 25.3 25.5 25.5 25.0 #3 21.5 24.6 25.2 25.3 24.8 #4 23.8 25.5 25.5 25.5 25.0 (c.f. predicted) 24.0 25.0 25.0 24.5 24.0 #2 Has vertical streaking in bias frames #3 Currently has sensitivity problem and non-uniform response #4 Charge injection problem limit full well to 60,000 e-
N -------------- -------------- | | | | | | | | | | | | | #3 | | #2 | | | | | | W8-1 | | W12-1.1 | | | | | -------------- -------------- E x -------------- -------------- | | | | | | | | | | o | | | #4 | | #1 | | | | | | W5-1.1 | | W16-1.1 | | | | | -------------- -------------- ------------- | | | #5 | | W10-4 | |.............| | Masked for | | frame | | transfer | -------------
Dome ---------------------------------------- | | | | | 8.93mm | | | | | | | | | | | | | | 7.43mm | | | | | | | | | | | | | | 7.45mm | | | | | ----------------------------------------- Floor
^ | y Using a conventional x ---> coordinate system in the 180 rotator orientation illustrated above and defining the rotator centre as the origin:
Nominal to rotator centre | AOXNOM = -1.3623D-3 (radians) |
Aperture A ie. nominal to centre of #3 | TDATA(11) = -429 (arcsec) |
TDATA(12) = 398 (arcsec) | |
Aperture B ie. nominal to autoguider | TDATA(13) = 1210 (arcsec) |
central default window (1032,850) | TDATA(14) = -56 (arcsec) |
Mike Irwin (
mike@ast.cam.ac.uk )
(RGO WFC Project Scientist)
Nic Walton (naw@ing.iac.es )
(INT Telescope Manager)