skymap tutorial example

README-skymap.md

@@ -6,6 +6,7 @@ From notes by Cees Bassa mixed with my misunderstandings.
 This example will use the Bluewalker 3 satellite, with NORAD ID 53807.
 
 
+# TLE
 First a TLE is needed. I get this from Celestrak, ala:
 
 ```
@@ -21,6 +22,7 @@ BLUEWALKER 3
 2 53807  53.2016 312.3504 0014195 129.0685 231.1577 15.18596984 10510
 ```
 
+# Skymap Script
 Run skymap (with my branch):
 
 ```
@@ -52,7 +54,9 @@ skymap									\
 ![skymap tutorial main](img/skymap-tutorial-main.png)
 
 
-That's a 24h prediction for BW3 for the example location.
+# Skymap Window Overview
+Below is a 24 hour (38400 seconds) prediction for
+Bluewalker 3 for the example location.
 
 * Grey tracks are in the shadow.
 * Orange tracks are in sunlight but during daytime.
@@ -66,6 +70,9 @@ The example has two passes during night time:
 ![skymap tutorial south east](img/skymap-tutorial-south-east.png)
 ![skymap tutorial south west](img/skymap-tutorial-south-west.png)
 
+
+# Skymap Interactive
+
 In interactive mode, use `l` to change the track length to 3600 secs (1 hour).
 To use `skymap` in interactive mode, launch `skymap` from the command line.
 When you hit `l` in the graphical display, the prompt will be in the terminal
@@ -82,10 +89,17 @@ At some point you'll get the first pass.
 Then use `<` a few times to reduce the timestep size to something like 450 seconds.
 Then step forward with `.` until it is above the horizon.
 
-Moving time forward to `00:37:37`:
-Pressing `i` with the cursor near 53807 gives you the az/el and RA/Dec to read off.
+Move time forward to `00:37:37`.
+
+![skymap tutorial 00:37:37](img/skymap-tutorial-3737.png)
 
 
+# Skymap Satellite Info
+Press `i` with the cursor near `53807`.
+This gives you the Az/El and RA/Dec to read off.
+
+
+# TLE with `tleinfo`
 Cees dumped the TLE for `53807` into a text file with
 
 ```