get-healpix-patch: Update against sky.py

1 files changed, 9 insertions, 4 deletions

diff --git a/bin/get-healpix-patch b/bin/get-healpix-patch
index a837ad4..2fa21c6 100755
--- a/bin/get-healpix-patch
+++ b/bin/get-healpix-patch
@@ -81,12 +81,19 @@ def main():
     logger.info("patch pixel size: %.1f [arcsec]" % pixelsize)
 
     sky = SkyPatch(size=size, pixelsize=pixelsize, center=center)
+    sky.creator = __name__
     logger.info("Read HEALPix map from file: %s" % args.infile)
     hpdata, hpheader = read_fits_healpix(args.infile)
     nside = hpheader["NSIDE"]
     logger.info("Reprojecting HEALPix map to sky patch ...")
+    try:
+        coordsys = hpheader["COORDSYS"]
+    except KeyError:
+        logger.warning("missing COORDSYS keyword: %s" % args.infile)
+        logger.warning("assuming 'Galactic'")
+        coordsys = "Galactic"
     image, __ = reproject_from_healpix(
-        input_data=(hpdata, hpheader["COORDSYS"]),
+        input_data=(hpdata, coordsys),
         output_projection=sky.wcs, shape_out=size)
     if args.smooth:
         sigma = (2.0 * hp.nside2resol(nside, arcmin=True) *
@@ -95,9 +102,7 @@ def main():
         logger.info("Smoothed sky patch using Gaussian filter of " +
                     "sigma = %.2f [pixel]" % sigma)
     sky.header = hpheader.copy(strip=True)
-    sky.header["OBJECT"] = "Sky Patch"
-    sky.header["EXTNAME"] = "IMAGE"
-    sky.header.add_history(" ".join(sys.argv))
+    sky.add_history(" ".join(sys.argv))
     sky.data = image
     sky.write(args.outfile, clobber=args.clobber)
     logger.info("Write sky patch to file: %s" % args.outfile)