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| author | Aaron LI <aly@aaronly.me> | 2017-09-02 13:13:15 +0800 |
|---|---|---|
| committer | Aaron LI <aly@aaronly.me> | 2017-09-02 13:55:32 +0800 |
| commit | 5cd9e9133748793f74eccf15906ea8e0a91e950b (patch) | |
| tree | 866f0b8245ad5bda50ce016c8cb3dac9fea7eed6 /astro/fits | |
| parent | 6d58d41451935466a9cbaaf0502e843f3d7904ee (diff) | |
| download | atoolbox-5cd9e9133748793f74eccf15906ea8e0a91e950b.tar.bz2 | |
Fix WCS delta sign
Diffstat (limited to 'astro/fits')
| -rwxr-xr-x | astro/fits/rescale_image.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/astro/fits/rescale_image.py b/astro/fits/rescale_image.py index 47db31f..9008b33 100755 --- a/astro/fits/rescale_image.py +++ b/astro/fits/rescale_image.py @@ -89,7 +89,7 @@ class FITSImage: if hasattr(self, "_pixelsize"): return self._pixelsize else: - return self.header["CDELT1"] * 3600 # [deg] -> [arcsec] + return abs(self.header["CDELT1"]) * 3600 # [deg] -> [arcsec] @pixelsize.setter def pixelsize(self, value): @@ -114,7 +114,7 @@ class FITSImage: w.wcs.crval = np.array([hdr.get("CRVAL1", 0.0), hdr.get("CRVAL2", 0.0)]) w.wcs.crpix = np.array([self.Ny/2+1, self.Nx/2+1]) - w.wcs.cdelt = np.array([self.pixelsize/3600, self.pixelsize/3600]) + w.wcs.cdelt = np.array([-self.pixelsize/3600, self.pixelsize/3600]) w.wcs.cunit = [hdr.get("CUNIT1", "deg"), hdr.get("CUNIT2", "deg")] return w |