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| author | Aaron LI <aly@aaronly.me> | 2017-07-19 20:19:36 +0800 |
|---|---|---|
| committer | Aaron LI <aly@aaronly.me> | 2017-07-19 20:19:36 +0800 |
| commit | 69d7cb772beb540d4f586d96259a366aa2fa9782 (patch) | |
| tree | 18e32abf97c683665d7a1d569570d876195d9222 | |
| parent | e8f394527d574c9b25368e61486fab400a722600 (diff) | |
| download | fg21sim-69d7cb772beb540d4f586d96259a366aa2fa9782.tar.bz2 | |
sky.py: Default to assume a flat sky for patch
Use "CAR" (Cartesian) projection instead of "TAN" (tangential) projection.
Signed-off-by: Aaron LI <aly@aaronly.me>
| -rw-r--r-- | fg21sim/sky.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/fg21sim/sky.py b/fg21sim/sky.py index 1460ec2..f40c1d5 100644 --- a/fg21sim/sky.py +++ b/fg21sim/sky.py @@ -33,7 +33,8 @@ class SkyPatch: NOTE/XXX -------- - Only `TAN` (tangential) sky projection supported! + Currently just use ``CAR`` (Cartesian) sky projection, i.e., + assuming a flat sky! Parameters ---------- @@ -48,11 +49,14 @@ class SkyPatch: The pixel size of the sky patch, will be used to determine the sky coordinates. Unit: [arcsec] - center : (ra, dec) tuple + center : (ra, dec) tuple, optional The (R.A., Dec.) coordinate of the sky patch center. Unit: [deg] - infile : str + infile : str, optional The path to the input sky patch + frequency : float, optional + The frequency of the input sky path + Unit: [MHz] Attributes ---------- @@ -188,12 +192,13 @@ class SkyPatch: NOTE/XXX -------- - Currently only support the `TAN` (tangential) projection. + Currently just use the `CAR` (Cartesian) projection, + i.e., assuming a flat sky. """ w = make_wcs(center=(self.xcenter, self.ycenter), size=(self.xsize, self.ysize), pixelsize=self.pixelsize, - frame="ICRS", projection="TAN") + frame="ICRS", projection="CAR") return w def contains(self, skycoord): |