Moved the Fe-55 sample images to their own directory.

Author: roytsmart

msfc_ccd/_data/ESIS1_00002.fit renamed to msfc_ccd/_data/fe55/ESIS1_00002.fit

@@ -9,13 +9,13 @@
     "path_fe55_esis3",
 ]
 
-path_fe55_esis1 = pathlib.Path(__file__).parent / "_data/ESIS1_00002.fit"
+path_fe55_esis1 = pathlib.Path(__file__).parent / "_data/fe55/ESIS1_00002.fit"
 """
 An Fe 55 sample image from the ESIS channel 1 camera gathered by the MSFC 
 sounding rocket team during camera testing and validation on 2017-07-06. 
 """
 
-path_fe55_esis3 = pathlib.Path(__file__).parent / "_data/ESIS3_05384.fit"
+path_fe55_esis3 = pathlib.Path(__file__).parent / "_data/fe55/ESIS3_05384.fit"
 """
 An Fe 55 sample image from the ESIS channel 3 camera gathered by the MSFC 
 sounding rocket team during camera testing and validation on 2017-07-12.