Thursday, January 22, 2009

ps2pdf keep resolution, crop to bounding box

ps2pdf -dEPSCrop -dAutoRotatePages=/None -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dUseFlateCompression=true l007_displaycrop.ps
ref: this post

Making a postscript plot of a gigantic fits image


map = readfits('MOSAIC.fits',hdr)

crpix1 = sxpar(hdr,'CRPIX1')
crpix2 = sxpar(hdr,'CRPIX2')
crval1 = sxpar(hdr,'CRVAL1')
crval2 = sxpar(hdr,'CRVAL2')
cd1_1 = sxpar(hdr,'CD1_1')
cd2_2 = sxpar(hdr,'CD2_2')

x = lindgen(n_e(map[*,0]))
y = lindgen(n_e(map[0,*]))
l = (x-crpix1)*cd1_1+crval1-360
b = (y-crpix2)*cd2_2+crval2

imdisp,map,/axis,xrange=[max(l),min(l)],yrange=[min(b),max(b)],range=[-1,8]


This code makes use of imdisp.pro.

Wednesday, January 14, 2009

MOSAIC data reduction

MOSAIC reduction is very difficult.
http://www.noao.edu/noao/noaodeep/ReductionOpt/frames.html has the official instructions.

Important things:
Have the latest version of MSCRED and MSCDB installed. Both will give cryptic errors or "cannot open file" errors (because the files don't exist) otherwise.



mscred
setinstrument kpno CCDMosaThin1
msccmatch obj09*.fits coords="!mscgetcat $I $C" search=60 rsearch=1 nfit=30 accept=yes interactive=no fit=no

Tuesday, January 13, 2009

Site visits, comps


Amusing - visits to my site increased steadily leading up to Jan 9, then crashed precipitously.