endless

data/Gaia_unWISE/print_ds9reg.py

@@ -2,6 +2,7 @@ from astropy.io import fits
 import sys
 
 filename='Gaia_unWISE_Coma.fits.catalog'
+#filename='Gaia_unWISE_Coma.footprint.fits.catalog'
 fout=filename.replace(".fits.catalog", ".reg")
 
 hdul = fits.open(filename)

data/Gaia_unWISE/select_footprint.py

@@ -0,0 +1,66 @@
+from astropy.io import fits
+import sys
+from astropy.wcs import WCS
+from astropy import wcs
+from astropy.table import QTable, Table, Column
+
+from astropy.coordinates import SkyCoord # High-level coordinates
+from astropy.coordinates import ICRS, Galactic, FK4, FK5 # Low-level frames
+from astropy.coordinates import Angle, Latitude, Longitude # Angles
+import astropy.units as u
+
+
+
+
+
+filename='Gaia_unWISE_Coma.fits.catalog'
+fout=filename.replace(".fits.catalog", ".footprint.reg")
+
+
+hdul = fits.open(filename)
+#hdul.info()
+
+tbdata = hdul[1].data
+hdul.close()
+
+detmask='../../products/mosa_parts_tm0_DetectorMask_en00.fits'
+print("reading sensmap {}".format(detmask))
+hdul = fits.open(detmask)
+mask = hdul[0].data
+hdr = hdul[0].header
+hdul.close()
+wcs = WCS(hdr)
+
+
+tab = Table.read(filename, format='fits')
+tbr=[]
+for idx in range(len(tab['RA'])):
+    ra=tab['RA'][idx]
+    dec=tab['DEC'][idx]
+    crd = SkyCoord(ra, dec, frame=FK5(), unit="deg")
+    pix = wcs.wcs_world2pix([(ra, dec),], 1)
+    px=round(pix[0][0])-1
+    py=round(pix[0][1])-1
+    if not (px >=0 and py >= 0 and px <= (10000-1) and py < (10000-1)):
+        tbr.append(idx)
+        continue
+    if mask[py,px] == 0:
+        tbr.append(idx)
+tab.remove_rows(tbr)
+tab.write("Gaia_unWISE_Coma.footprint.fits.catalog", format='fits', overwrite='True')
+
+
+
+with open("./{}".format(fout), 'w') as writer:
+    for rec in tbdata:
+        ra=rec['RA']
+        dec=rec['DEC']
+        crd = SkyCoord(ra, dec, frame=FK5(), unit="deg")
+        pix = wcs.wcs_world2pix([(ra, dec),], 1)
+        px=round(pix[0][0])-1
+        py=round(pix[0][1])-1
+        if not (px >=0 and py >= 0 and px <= (10000-1) and py < (10000-1)):
+            continue
+        if mask[py,px] == 1:
+            print("fk5;circle({}, {}, 0.008)".format(rec['RA'],rec['DEC']))
+            writer.write("fk5;circle({}, {}, {})\n".format(rec['RA'],rec['DEC'],0.0080000))