From b5838d49b71b4bfdbff944a1f38e89ddad8334b8 Mon Sep 17 00:00:00 2001 From: James Chiang Date: Mon, 29 Jul 2024 11:17:31 -0700 Subject: [PATCH] add comment that satellite streaks are not at infinity and out-of-focus compared to stars and galaxies --- imsim/instcat.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/imsim/instcat.py b/imsim/instcat.py index 8c07bba1..7521894a 100644 --- a/imsim/instcat.py +++ b/imsim/instcat.py @@ -485,6 +485,10 @@ def getObj(self, index, gsparams=None, rng=None, exptime=30, logger=None): obj = galsim.DeltaFunction(gsparams=gsparams) elif params[0].lower() == 'streak': + # Note that satellite streaks are not sources at infinity + # and so would be out-of-focus compared to stars or + # galaxies and would therefore have a different PSF. This + # implementation does not account for that difference. length = float(params[1]) width = float(params[2]) obj = galsim.Box(length, width, gsparams=gsparams)