diff options
Diffstat (limited to 'bin')
| -rwxr-xr-x | bin/get-healpix-patch | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/bin/get-healpix-patch b/bin/get-healpix-patch index 7f01f78..0dc27f6 100755 --- a/bin/get-healpix-patch +++ b/bin/get-healpix-patch @@ -22,6 +22,7 @@ from fg21sim.configs import configs from fg21sim.sky import SkyPatch from fg21sim.utils import setup_logging from fg21sim.utils.fits import read_fits_healpix +from fg21sim.utils.units import UnitConversions as AUC def main(): @@ -39,7 +40,7 @@ def main(): help="size of the sky patch; " + "format: xsize,ysize; unit: pixel") parser.add_argument("--pixelsize", dest="pixelsize", type=float, - help="pixel size of the sky patch; unit: arcmin") + help="pixel size of the sky patch; unit: [arcsec]") parser.add_argument("-S", "--smooth", dest="smooth", action="store_true", help="Smooth the output patch using a Gaussian " + "filter whose sigma is 2x the pixel size " + @@ -59,7 +60,7 @@ def main(): configs.getn("sky/patch/ycenter")) # [ deg ] size = (configs.getn("sky/patch/xsize"), configs.getn("sky/patch/ysize")) - pixelsize = configs.getn("sky/patch/pixelsize") # [ arcmin ] + pixelsize = configs.getn("sky/patch/pixelsize") # [ arcsec ] elif not all([args.center, args.size, args.pixelsize]): raise ValueError("--center, --size, and --pixelsize are " + "required when --config is missing!") @@ -75,7 +76,7 @@ def main(): logger.info("patch center: (%.3f, %.3f) [deg]" % center) logger.info("patch size: (%d, %d) pixels" % size) - logger.info("patch pixel size: %.1f [arcmin]" % pixelsize) + logger.info("patch pixel size: %.1f [arcsec]" % pixelsize) sky = SkyPatch(size=size, pixelsize=pixelsize, center=center) logger.info("Read HEALPix map from file: %s" % args.infile) @@ -86,7 +87,8 @@ def main(): input_data=(hpdata, hpheader["COORDSYS"]), output_projection=sky.wcs, shape_out=size) if args.smooth: - sigma = 2 * hp.nside2resol(nside, arcmin=True) / pixelsize + sigma = (2.0 * hp.nside2resol(nside, arcmin=True) * + AUC.arcmin2arcsec / pixelsize) image = scipy.ndimage.gaussian_filter(image, sigma=sigma) logger.info("Smoothed sky patch using Gaussian filter of " + "sigma = %.2f [pixel]" % sigma) |