diff options
Diffstat (limited to 'astro/oskar/wsclean.py')
| -rwxr-xr-x | astro/oskar/wsclean.py | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/astro/oskar/wsclean.py b/astro/oskar/wsclean.py index 574c1dc..cfef30d 100755 --- a/astro/oskar/wsclean.py +++ b/astro/oskar/wsclean.py @@ -44,30 +44,41 @@ def main(): help="only create dirty images (by setting niter=0)") parser.add_argument("--update-model", dest="update_model", action="store_true", - help="update the MODEL_DATA column in MS") + help="write/update the MODEL_DATA column in MS") parser.add_argument("--save-weights", dest="save_weights", action="store_true", - help="save the gridded weights in <name>-weights.fits") + help="save gridded weights in <name>-weights.fits") + parser.add_argument("--save-uv", dest="save_uv", + action="store_true", + help="save gridded uv in <name>-uv-{real,imag}.fits") + parser.add_argument("--uv-range", dest="uv_range", default=":", + help="uv range [lambda] (i.e., baseline lengths) " + + "used for imaging; syntax: '<min>:<max>' " + + "(default: ':', i.e., all uv/baselines)") parser.add_argument("-w", "--weight", dest="weight", default="briggs", choices=["uniform", "natural", "briggs"], help="weighting method (default: 'briggs')") - parser.add_argument("--briggs", dest="briggs", type=float, default=0.0, + parser.add_argument("-B", "--briggs", dest="briggs", + type=float, default=0.0, help="Briggs robustness parameter (default: 0); " + "-1 (uniform) -> 1 (natural)") - parser.add_argument("--niter", dest="niter", type=int, default=100000, + parser.add_argument("-#", "--niter", dest="niter", + type=int, default=100000, help="maximum number of CLEAN iterations " + "(default: 100,000)") parser.add_argument("--gain", dest="gain", type=float, default=0.1, - help="CLEAN gain for each minor iteration") + help="CLEAN gain for each minor iteration " + + "(default: 0.1)") parser.add_argument("--mgain", dest="mgain", type=float, default=0.85, - help="CLEAN gain for major iterations") + help="CLEAN gain for major iterations " + + "(default: 0.85)") parser.add_argument("-s", "--size", dest="size", type=int, required=True, help="output image size (pixel number on a side)") parser.add_argument("-p", "--pixelsize", dest="pixelsize", type=float, required=True, help="output image pixel size [arcsec]") - parser.add_argument("--taper-gaus", dest="taper_gaus", type=float, + parser.add_argument("-G", "--taper-gaus", dest="taper_gaus", type=float, help="taper the weights with a Gaussian function " + "to reduce the contribution of long baselines. " + "Gaussian beam size in [arcsec].") @@ -76,11 +87,12 @@ def main(): "spectra with [order] polynomial in normal-space") # exgrp = parser.add_mutually_exclusive_group() - exgrp.add_argument("--threshold-auto", dest="threshold_auto", - type=float, default=1.5, - help="estimate noise level and stop at <sigma>*<std>") - exgrp.add_argument("--threshold", dest="threshold", type=float, - help="stopping CLEAN threshold [Jy]") + exgrp.add_argument("-S", "--threshold-nsigma", dest="threshold_nsigma", + type=float, default=2.0, + help="estimate the noise level <sigma> and stop at " + + "nsigma*<sigma> (default: 2.0 <sigma>)") + exgrp.add_argument("-t", "--threshold", dest="threshold", type=float, + help="stopping CLEAN threshold [mJy]") # parser.add_argument("-N", "--name", dest="name", required=True, help="filename prefix for the output files") @@ -125,11 +137,20 @@ def main(): if args.save_weights: cmdargs += ["-saveweights"] + if args.save_uv: + cmdargs += ["-saveuv"] + + # uv/baseline range + uvmin, uvmax = args.uv_range.strip().split(":") + if uvmin: + cmdargs += ["-minuv-l", float(uvmin)] + if uvmax: + cmdargs += ["-maxuv-l", float(uvmax)] if args.threshold: - cmdargs += ["-threshold", args.threshold] + cmdargs += ["-threshold", args.threshold*1e-3] # [mJy] -> [Jy] else: - cmdargs += ["-auto-threshold", args.threshold_auto] + cmdargs += ["-auto-threshold", args.threshold_nsigma] if args.taper_gaus: cmdargs += ["-taper-gaussian", args.taper_gaus] |