From 050b6c0e62c76c91011068db4f23db6cc05547a6 Mon Sep 17 00:00:00 2001
From: Jo Bovy <bovy@astro.utoronto.ca>
Date: Mon, 28 Oct 2019 12:52:30 -0400
Subject: [PATCH] Make sure not to apply the IsothermalDiskPotential amplitude
 twice, fixes #400

---
 galpy/potential/IsothermalDiskPotential.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/galpy/potential/IsothermalDiskPotential.py b/galpy/potential/IsothermalDiskPotential.py
index 795f4a1ce..48f2192d6 100644
--- a/galpy/potential/IsothermalDiskPotential.py
+++ b/galpy/potential/IsothermalDiskPotential.py
@@ -46,6 +46,7 @@ def __init__(self,amp=1.,sigma=0.1,ro=None,vo=None):
             sigma= sigma.to(units.km/units.s).value/self._vo
         self._sigma2= sigma**2.
         self._H= sigma/numpy.sqrt(8.*numpy.pi*self._amp)
+        self._amp= 1. # Need to manually set to 1, because amp is now contained in the combination of H and sigma^2
         self.hasC= True
         
     def _evaluate(self,x,t=0.):