Changes between Version 1 and Version 2 of PublicPages/MayallZbandLegacy/NotesforObservers/Copilot

Timestamp:

Feb 8, 2016 12:21:49 PM (9 years ago)

Author:

Dustin Lang

Comment:

--

PublicPages/MayallZbandLegacy/NotesforObservers/Copilot

@@ -1 +1 @@
 = Copilot =
 
-*copilot.py* is a script that watches for new images, measures them,
- and produces a plot, *recent.png* to help observers understand what
+`copilot.py` is a script that watches for new images, measures them,
+ and produces a plot, `recent.png` to help observers understand what
  the conditions are doing.
 
 Start it from the `mzls@mayall-idl.kpno.noao.edu` account,
 {{{
+cd ~/obsbot
 python copilot.py &
 }}}
@@ -18 +19 @@
 An example plot is shown here:
 
-[[Image(copilot-example.png)]]
+[[Image(https://desi.lbl.gov/trac/attachment/wiki/PublicPages/MayallZbandLegacy/NotesforObservers/Copilot/recent.png)]]
 
 The top panel shows the seeing.  Any problems with the data we know
@@ -35 +36 @@
 
 
+The second panel shows the Sky brightness.  The "nominal" brightness
+is shown by the magenta horizontal line.  In this panel, the pass
+number of previous exposures is shown.  (This corresponds to the pass
+we thought the image was going to be, not what the actual conditions
+delivered.)
 
+The "transparency" panel shows what fraction of the light from stars
+is getting through the atmosphere to us.  Around 90% usually indicates
+clear photometric conditions.
+
+The "exposure time" panel is complicated.  The hollow black dots show
+the actual exposure time of the images we took.  The magenta dots show
+the exposure time we should have taken, given the measured conditions
+in that image; it's post-facto what we should have done.  We have
+lower and upper bounds on the exposure times, 80 and 250 seconds.  If
+the "post-facto" target exposure time is below or above the bounds, it
+is shown with a triangle, and a circle will also be plotted at the
+lower or upper bound line.
+
+The "depth factor" plot just shows our actual exposure time divided by
+the post-facto target exposure time.  1 indicates that we're doing
+exactly what we should be doing.  Greater than 1 indicates we're
+over-exposing, and less than 1 indicates that we're under-exposing.
+The vertical labels show the exposure numbers.
+
+
+Note that zeros and focus frames will not show up on the plot.
+
+