Shappzz.help

How to use zz.cl for reducing Hartmann screen data

Revision of J. Baldwin's notes from 6 July98

All the updated programs are stored in /ua76/boccas/4m/to_run_shap/

SETUP:

  •  LOAD IRAF TASKS:

    • images
    • proto
    • lists
    • digiphot
    • apphot
  • GET THE FOLLOWING EXECUTABLES AND FILES into the directory you are using:

    • shap
    • shapav9
    • newshap
    • map4
    • setup.cl
    • zz.cl
    • modcheck.cl
    • ann_zer.ann
    • ela_ann.dat
    plus a .coo file appropriate for the telescope/f-ratio you are using:

    • 36 INCH: 36inch.coo
    • 4m pf and f/8: model.coo
    • 4m f/14: f14.coo
    • 4m f/30: f30.coo

 

  • THEN:

    • task setup=setup.cl
    • task modcheck=modcheck.cl
    • task zz=zz.cl
    • task $shap=$shap9

 

  • PLUS A COUPLE OF HANDY ALIASES

    • alias te 'textedit \!* &'
    • alias lpflip 'enscript -r -l -fCourier9 -Pnpt0x2 \!*'

 

  • SET TELESCOPE AND CCD PARAMETERS in setup:
      epar setup TASK = setup image = obj134 Image: coofile = f14.coo coordinate file: (pixsize= 0.048) CCD pixel size (mm) (apfill = 1.0733) Hart screen fill factor, 4m=1.0733, 36in=1.0881 (mirdia = 3947.7) Mir dia (mm), 4m=3947.7, 36in=914 (fratio = 14.45) 4m=14.45,7.8,2.904; 36in=13.5 (cursor = ) (coof2 = f14.coo) (mode = al)
  • TAKE A FIRST TEST FRAME as early as possible in the night.
  • RUN setup. Mark a pair of spots in the top and bottom rows of the Hartmann pattern... their separation is used by Shap so you cannot just pick any spots anywhere in the pattern. Note screwy feature where you must mark 1st spot with cursor + any key, then get cursor back to IRAF window and hit RETURN in order to get prompt for 1st spot number. Setup will produce files shap.par, modshap.coo, and zz.input setup obj134 f14.coo
  • Use textedit or any other editor to remove bad spots from modshap.coo
  • Run modcheck to be sure you have everything set up correctly.
      modcheck obj134
  • NOW EPAR A FEW VITAL PARAMETERS FOR phot:
      centerp: cbox should be set to pacing between points maxshift same fitskypars: annulus tune to dot size dannulus tune to spacing between dots photpars: aperture set to same value as annulus
  • CHECK SHAP CALIBRATIONS, ANGLE ZERO POINTS, ETC:

    • determine directions on sky using offset command.
    • take shap data while forcing in in 4 mu astig at PA 0, PA 90.
  • MAKE SKY MAPS WITH CORRECTIONS OFF.
  • NOW RUN zz ON EACH IMAGE. 3 exposures 30 sec each.

    • For each new object or telescope configuration: 'newshap' (enter title. If mapping sky, enter ha, dec in hh.h dd.d format; eg. degrees and fraction of degree, rather than deg.min)
    • For each image: zz objxxx
    • as needed: shapav9, tail shap.work, tail shap.sumry
  •  where shapav9 averages together all data between successive applications of newshap and writes detailed log file in shap.sumry, averages in shap.av
  • TO PLOT RESULTS OF SKY MAP: use texteditor to copy relevant sections of shap.av into temporary file. map4

 

 Maxime Boccas, 4Feb01