Merge pull request #372 from kakirastern/add-todo-to-quantities

Add learning goals to Quantities tutorial

Author: eblur

tutorials/notebooks/quantities/quantities.ipynb

@@ -7,19 +7,20 @@
     "# Using Astropy Quantities for astrophysical calculations\n",
     "\n",
     "## Authors\n",
-    "Ana Bonaca, Erik Tollerud, Jonathan Foster\n",
+    "Ana Bonaca, Erik Tollerud, Jonathan Foster, Kris Stern\n",
     "\n",
     "## Learning Goals\n",
-    "* Learn how to instantiate `astropy.units.Quantity` objects\n",
+    "* Use `Quantity` objects to estimate a hypothetical galaxy's mass\n",
     "* Take advantage of constants in the `astropy.constants` library\n",
     "* Print formatted unit strings\n",
     "* Plot `Quantity` objects with unit labels, using `astropy.visualization.quantity_support`\n",
     "* Do math with `Quantity` objects\n",
     "* Convert quantities with `astropy.units`\n",
     "* Convert between wavelength and energy with `astropy.units.spectral` equivalencies\n",
     "* Use the small angle approximation with `astropy.units.dimensionless_angles` equivalencies\n",
-    "* Write functions with explicit units to prevent your Mars orbiter from crashing\n",
+    "* Write functions that take `Quantity` objects instead of numpy arrays\n",
     "* Make synthetic radio observations\n",
+    "* Use `Quantity` objects such as data cubes to facilitate a full derivation of the total mass of a molecular cloud\n",
     "\n",
     "## Keywords\n",
     "units, matplotlib, radio astronomy, data cubes\n",
@@ -1516,5 +1517,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 1
+ "nbformat_minor": 2
 }