This is my action item from the Visit Planner meeting. I am 
attempting to organize all the PI modifiable aspects of an observation
that effect scheduling. There are two reports: the first one lists the
things that can be changed, the second attempts to break those down by
which Spike constraint they effect.

Please read (and even comment) before our next meeting.

- Karla

p.s. You will want to print this in landscape mode.


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1) Going through the current RPS2 syntax and listing features that can be
tweaked to effect scheduling:


Target specification

	Fixed target specification 
		Target Position

	Moving target specification 
		Target Position (Level 1,2,3 or Ephem)
		MT Windows

Pattern specification

	Number_of_Points
	Point_Spacing
	Pattern_Orient

Visit specification

	Visit_Requirements
		PCS Mode
		Guiding Tolerance
		Drop to Gyro if Necessary
		Orient
		Orient From (another visit)
		Same Orient As (visit)
		CVZ
		Sched
		Notrack
		After (a date)
		After (a visit)
		Before (a date)
		Between (two dates)
		Group (some visits) Within (some time)
		Sequence (some visits) Within (some time)

Exposure specification

	How they under or over fill orbits

	Special_Requirements
		Position Target
		Pattern
		RT Analysis
		Requires Ephem Correction
		Low-Sky
		Shadow
		Phase
		Save/Use Offset
         PC modifiable:
		GSPair
		Exp PCS Mode
		GS Acquisition Scenario

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2) Per Jesse's suggestion and with Drew's help I have attempted to list all the constraints that are graphed in RPS2 
and what HST requirement and/or User specification effect that constraint.

				HST Req			User Control
"Physical Constraints":		-------			------------

  Sun				Sun Angle		Target Position
  Moon				Moon Angle		Target Position
  Guide Stars			Guiding stars		Target Position, (GS Acq Scenario), Pos Targs, Pattern, Orient, 
							Drop to gyro, PCS Mode, Guiding Tolerance, Ephem Corr, Notrack,
							(Exp PCS Mode), (GS Pair)
  Target Visibility		Earth Limb Angles 	Target Position, How orbits filled, Sched, CVZ, Shadow
  Moving Target 					Target Position, MT Windows

"Absolute User Constraints":

  Between						Between (two dates)
  After							After (date)						
  Before						Before (date)
  Phase							Phase
  Low Sky						Low-Sky
  Absolute Orient		Solar Panel Angles	Orient

"Relative User Constraints":
						
  Timing Link 						After (visit), Group Within, Seq Within
  Save/Use Offset					Save/Use Offset (implies an After link), RT Analysis 
  Orient From 						Orient From (visit)
  Same Orient						Same Orient As (visit)
  Ephemeris Correction					Req Ephem Corr (if used in multiple visits 
                                                                        implies a Same Orient link)