Merge pull request #40 from GalSim-developers/imsim_bkg_noise

Imsim bkg noise

euclidlike_imsim/ccd.py

@@ -240,7 +240,11 @@ def addNoise(self, image, config, base, image_num, obj_num, current_var, logger)
         # value added to sky_image.  So technically, this includes things that aren't just sky.
         # E.g. includes dark_current and thermal backgrounds.
         sky_image = image.copy()
-        sky_level = euclidlike.getSkyLevel(bp, world_pos=wcs.toWorld(image.true_center))
+        sky_level = euclidlike.getSkyLevel(
+            bp,
+            world_pos=wcs.toWorld(image.true_center),
+            date=Time(self.mjd, format="mjd").datetime,
+        )
         logger.debug("Adding sky_level = %s", sky_level)
         if self.stray_light:
             logger.debug("Stray light fraction = %s", stray_light_fraction)