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NotesforObservers

-                      v137
+                      v138
 **pass3** is the filler or worst pass executed when conditions are bad. Seeing > 1.3'' and its not photometric (trans < 90%). Pass3 may be done in good conditions when no pass1 or pass2 tiles are available.
+If you want to use only pass2 or pass3 on a given night (because, say, there is high cirrus and you are sure the night will not be photometric), then create a file called "nopass1" (by typing "touch nopass1") in the ~/exec/mosbot directory. This will restrict mosbot to choose only between passes 2 and 3.
 ----
 …
 choosing the pass number and setting the exposure time.
+If the conditions look marginal, and you only want to run with pass3, say, start mosbot using
+{{{
+  python mosbot.py pass3.json pass3.json pass3.json
+}}}
+If the conditions look marginal, and you only want to run with pass3, say, just create an empty "forcepass3" file in the ~/exec/mosbot/ directory:
+{{{
+   cd ~/exec/mosbot
+   touch forcepass3
+}}}
+If you want to allow only pass 2, then use:
+{{{
+   cd ~/exec/mosbot
+   touch forcepass2
+}}}
+If you want to allow only pass 1, then use:
+{{{
+   cd ~/exec/mosbot
+   touch forcepass1
+}}}
 If you want to allow only pass 2 and pass 3, then use:
 {{{
+  python mosbot.py pass2.json pass3.json pass3.json
+   cd ~/exec/mosbot
+   touch nopass1
 }}}