diff --git a/src/arpes/constants.py b/src/arpes/constants.py
index a043c06e..e37097fd 100644
--- a/src/arpes/constants.py
+++ b/src/arpes/constants.py
@@ -7,7 +7,7 @@
 """
 
 from __future__ import annotations
-
+import numpy as np
 from typing import TYPE_CHECKING
 
 from numpy import pi
@@ -54,7 +54,7 @@
 
 SPECTROMETER_MC: Spectrometer = {
     "name": "MC",
-    "rad_per_pixel": (1 / 10) * (pi / 180),
+    "rad_per_pixel": np.deg2rad(1 / 10),
     "type": "hemisphere",
     "is_slit_vertical": False,
 }
@@ -62,7 +62,7 @@
 SPECTROMETER_MC_OLD: Spectrometer = {
     "name": "MC_OLD",
     "type": "hemisphere",
-    "rad_per_pixel": 0.125 * (pi / 180),
+    "rad_per_pixel": np.deg2rad(0.125),
     "is_slit_vertical": False,
 }
 
diff --git a/src/arpes/plotting/false_color.py b/src/arpes/plotting/false_color.py
index 5b600b99..2f9d171c 100644
--- a/src/arpes/plotting/false_color.py
+++ b/src/arpes/plotting/false_color.py
@@ -23,7 +23,7 @@
 
 
 @save_plot_provenance
-def false_color_plot(
+def false_color_plot(  # noqa: PLR0913
     data_rgb: tuple[xr.Dataset, xr.Dataset, xr.Dataset],
     ax: Axes | None = None,
     out: str | Path = "",
diff --git a/src/arpes/utilities/jupyter.py b/src/arpes/utilities/jupyter.py
index 6a9fb59a..fee9bca5 100644
--- a/src/arpes/utilities/jupyter.py
+++ b/src/arpes/utilities/jupyter.py
@@ -13,6 +13,7 @@
 from typing import TYPE_CHECKING, TypedDict
 
 from tqdm.notebook import tqdm
+from traitlets.config import MultipleInstanceError
 
 if TYPE_CHECKING:
     from collections.abc import Iterable
@@ -98,7 +99,7 @@ def get_full_notebook_information() -> NoteBookInfomation | None:
         return None
     try:
         connection_file = Path(ipykernel.get_connection_file()).stem
-    except RuntimeError:
+    except MultipleInstanceError:
         return None
 
     logger.debug(f"connection_file: {connection_file}")