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Source  : 5a97f83
Branch  : main
Author  : ShebMichel <[email protected]>
Time    : 2025-12-15 01:24:02 +0000
Message : Merge pull request #266 from abostroem/replace_gala

Replace gala dependency with standalone files

Author: actions-user

02-coords.md

@@ -395,7 +395,7 @@ perpendicular to the direction of the stream (the y-axis in Figure 1).
 These are called the $\phi_1$ and $\phi_2$ coordinates, respectively.
 
 ```python
-from gala.coordinates import GD1Koposov10
+from gd1 import GD1Koposov10
 
 gd1_frame = GD1Koposov10()
 gd1_frame
@@ -405,6 +405,21 @@ gd1_frame
 <GD1Koposov10 Frame>
 ```
 
+:::::::::::::::::::::::::::::::::::::::::  callout
+
+## GD1Koposov10 import
+
+The `GD1Koposov10` reference frame is part of the `gala` package. For convience we provide 
+the stand alone file as part of the `student_download` zip file you downloaded. If your notebook 
+is not in your `student_download` directory, you will need to add the following before the import
+statement
+```python
+import sys
+sys.path.append(<path to student_download>)
+```
+Where `<path to student_download>` is the path to your `student_download` directory ending with `student_download`.
+::::::::::::::::::::::::::::::::::::::::::::::::::
+
 We can use it to find the coordinates of Betelgeuse in the GD-1 frame,
 like this:
 

03-transform.md

@@ -63,17 +63,21 @@ Whether you are working from a new notebook or coming back from a checkpoint,
 reloading the data will save you from having to run the query again.
 
 If you are starting this episode here or starting this episode in a new notebook,
-you will need to run the following lines of code.
+you will need to run the following lines of code. The last two lines of the import
+statements assume your notebook is being run in the `student_download` directory. 
+If you are running it from a different directory you will need to add the path using 
+`sys.path.append(<path to student download>)` where `<path to student_download>` is 
+the path to your `student_download` directory ending with `student_download`.
 
 This imports previously imported functions:
 
 ```python
 import astropy.units as u
 from astropy.coordinates import SkyCoord
-from gala.coordinates import GD1Koposov10
 from astropy.table import Table
 
 from episode_functions import *
+from gd1 import GD1Koposov10
 ```
 
 The following code loads in the data (instructions for downloading data can be
@@ -430,10 +434,11 @@ That might seem like a strange thing to do, but here is the motivation:
 With this preparation, we can use `reflex_correct` from Gala
 ([documentation
 here](https://gala-astro.readthedocs.io/en/latest/api/gala.coordinates.reflex_correct.html))
-to correct for the motion of the solar system.
+to correct for the motion of the solar system which we have included as a stand alone file
+in the `student_download`.
 
 ```python
-from gala.coordinates import reflex_correct
+from reflex import reflex_correct
 
 skycoord_gd1 = reflex_correct(transformed)
 ```

05-select.md

@@ -64,7 +64,12 @@ Whether you are working from a new notebook or coming back from a checkpoint,
 reloading the data will save you from having to run the query again.
 
 If you are starting this episode here or starting this episode in a new notebook,
-you will need to run the following lines of code.
+you will need to run the following lines of code. The last two lines of the import
+statements assume your notebook is being run in the `student_download` directory. 
+If you are running it from a different directory you will need to add the path using 
+`sys.path.append(<path to student download>)` where `<path to student_download>` is 
+the path to your `student_download` directory ending with `student_download`.
+
 
 This imports previously imported functions:
 
@@ -77,6 +82,8 @@ import matplotlib.pyplot as plt
 import pandas as pd
 
 from episode_functions import *
+from gd1 import GD1Koposov10
+from reflex import reflex_correct
 ```
 
 The following code loads in the data (instructions for downloading data can be

md5sum.txt

@@ -4,10 +4,10 @@
 "config.yaml" "0e6ae143684e18b060df625762ff29b4" "site/built/config.yaml" "2023-05-15"
 "index.md" "f26708b73f13068fbf4c8da251f0c3de" "site/built/index.md" "2024-03-08"
 "episodes/01-query.md" "a1f4d87ba15684c468444c4a626bec08" "site/built/01-query.md" "2025-12-12"
-"episodes/02-coords.md" "e09a9430b981e5bd93578ce45cd61225" "site/built/02-coords.md" "2025-12-09"
-"episodes/03-transform.md" "8e592b64c12491cf08ee2eb594c50830" "site/built/03-transform.md" "2025-12-12"
+"episodes/02-coords.md" "e104b425bc19cb6dbd55215c7426199a" "site/built/02-coords.md" "2025-12-15"
+"episodes/03-transform.md" "661b4c84964b3e00bf95b0897fccc4e7" "site/built/03-transform.md" "2025-12-15"
 "episodes/04-motion.md" "ebe3073ff00da59c6e90017f9b28cfef" "site/built/04-motion.md" "2025-12-12"
-"episodes/05-select.md" "65a0014a842bc8d8999109187c8e7be4" "site/built/05-select.md" "2025-12-12"
+"episodes/05-select.md" "cd4f863cdc248b508c863be4fda0bd94" "site/built/05-select.md" "2025-12-15"
 "episodes/06-join.md" "bf961f98c1c7cdd40b174fb1f5007b32" "site/built/06-join.md" "2025-12-12"
 "episodes/07-photo.md" "04517b3fd1615088f7911393c7ce0fde" "site/built/07-photo.md" "2025-12-12"
 "episodes/08-plot.md" "66a98a56805813963923aea5a90fe684" "site/built/08-plot.md" "2025-12-12"