set phi in .pts input file as well (#122)

Co-authored-by: Iver Smage <iversmage@gmail.com>

Author: iverks

src/instamatic/processing/ImgConversion.py

@@ -674,7 +674,7 @@ def write_pets_inp(self, path: str, tiff_path: str = 'tiff') -> None:
             print('', file=f)
             print(f'lambda {self.wavelength}', file=f)
             print(f'Aperpixel {self.pixelsize}', file=f)
-            print('phi 0.0', file=f)
+            print(f'phi {float(self.osc_angle)/2}', file=f)
             print(f'omega {omega}', file=f)
             print('bin 1', file=f)
             print('reflectionsize 20', file=f)