README web version of /home/usg/OPS/MTS/readme_xml/readme_83016301

Principal Investigator Email Address

• go@scn.jpl.nasa.gov

Estimated Total Execution Time (hours, including overheads)

• 14.0

General Description

• The goal of this second Neptune observing run in period 083 is to (a)
   repeat the imaging of Neptune's atmosphere in PAH1, 7.9, NEII-1 filters (3.5 hours)
   twice to characterise opposite hemispheres; and (b) to obtain three spectra (LR8.1,
   LR9.8 and MR10.3-13.0) with the slit aligned north-south along Neptune's central
   meridian.  The spectra have been split down into 2/3 individual templates within
   a single OB for stability.  The goal is to search for spatial variability and rotation,
   particularly in the polar region.  
  
  Our primary requirement is good signal to noise, so please extend integration times
   (where overheads have been overestimated) to fill the available 14 hours.

Waiver Requests

• A Waiver Request was submitted for OBs in excess of one hour.

Critical Observing Condition Constraints

• Airmass < 1.5
  Very low humidity
  Good seeing <0.8 if possible

Time-Critical Aspects

• These observations should take place after execution of 083.C-0163(A)
   - scheduled for August 2009.  
  
  IMAGING CONSTRAINTS:
  
  For imaging a particular hemisphere, it would be best if all three filters were
   acquired sequentially.
  
  The goal for the second imaging set is to observe the opposite hemisphere of Neptune,
   when the planet has rotated by 180 deg. in longitude.   This corresponds to ~6 h
   at our latitude of interest.  This is best accomplished by observing the intial
   imaging sequence in the early evening and repeating 6 hours later in the morning.
    
  
  If it is not possible to observe 6 h later, please ensure that the second observation
   observes the opposite side of Neptune.  This can be done on the successive night,
   i.e. 24h later, PLUS or MINUS a 6-hour delay, e.g. an initial observation made at
   0400 local time can be repeated on the next night at 2200; an initial observation
   made at 2100 local time can be repeated at 0300 the following night (i.e. 30 hours
   later) if weather or other problems prevent a repeat with a short 6-hour delay.
    The time between these should be made as short as possible, because we suspect
   that the phenomenon is time dependent with a time scale for variability which are
   we trying to characterize.
  
  SPECTROSCOPIC CONSTRAINTS:  
  
  A waiver was submitted for the long integrations involved in Neptune spectroscopy.
    For stability, several templates are included within a single observation block
   (2 or 3), in case any modifications to pointing/tracking are required to stay on
   target. Each Neptune spectrum should be followed (or preceeded) immediately by the
   relevent stellar calibrator (CAL_star_spectr*) through the same airmass/seeing.
    There is no requirement for all three spectral types to be acquired concurrently.
    However, we would benefit from spectra being acquired close to the imaging for
   contextual information.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• IMAGING:  We request that standard imaging of stars be supplied (at similar
   airmasses, where possible) to allow us to characterise the PSF.
  
  SPECTROSCOPY:  Three spectral calibration OBs (spectra of HD199345, a K5 star 7
   Aqr) have been supplied as separate OBs for execution as near as possible to their
   relevent Neptune observations.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• ---(Empty)---

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• YES

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• YES

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• YES

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A

If the provided finding chart is at a different wavelength than the observations,
 did you clearly describe in the README file how to identify the target?

• N/A

Did you specify a guide star brighter than V=12mag within a field of
 r=5arcmin around the science target?

• N/A