Set imposter mag to 20.0 if count rate is 0

sot · Dec 17, 2018 · d5ce279 · d5ce279
1 parent 9185a7e
commit d5ce279
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/proseco/characteristics_guide.py b/proseco/characteristics_guide.py
@@ -12,6 +12,9 @@
 # Add this padding to region checked for bad pixels (in addition to dither)
 dither_pix_pad = 0.4
 
+# Minimum imposter mag (if dark current is 0 set explicitly to this value)
+min_imposter_mag = 20.0
+
 CCD = {'row_min': -512.0,
        'row_max': 512.0,
        'col_min': -512.0,

diff --git a/proseco/guide.py b/proseco/guide.py
@@ -665,7 +665,7 @@ def get_imposter_mags(cand_stars, dark, dither):
                 idx = np.unravel_index(np.argmax(bin_image), bin_image.shape)
                 max_r = rminus + row_off + idx[0] * 2
                 max_c = cminus + col_off + idx[1] * 2
-        pixmax_mag = count_rate_to_mag(pixmax)
+        pixmax_mag = count_rate_to_mag(pixmax) if pixmax > 0 else GUIDE_CHAR.min_imposter_mag
         pixmags.append(pixmax_mag)
         pix_r.append(max_r)
         pix_c.append(max_c)