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Hubble Space Telescope
Phase I: 11997

COS Cycle-17 Calibration Phase-1 Template

Last Revised: 03/24/2009
Proposal ID: 11997
Title: FUV Internal/External Wavelength Scale Monitor
PI: C. Oliveira
Co-I(s): T. Keyes (STScI)
         D. Sahnow (JHU)
         P. Ghavamian
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# Orbit estimates are TOTAL for all of cycle-17

Total Prime Orbits:                  12
External Parallel Orbits:            0
Internals or no-impact orbits:       0
Comments on orbit estimate:          Assumes Cycle 17 runs until 11/1/2010
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# This section should be written with a GO audience in mind -- use 
# Calibration plans in WFPC-2 handbook as a guide.

Purpose:  Monitor zero-point offsets for the wavelength scale (internal 
          wavecal lamp to external standard wavelength scale) for relevant
          central wavelength settings.

                                      
Description:  Observe external radial velocity standard targets in
              TIME-TAG, FLASH=YES mode, and monitor zero-point offsets
              between wavelength scale set by internal wavecal vs. that
              defined by absorption lines in the target. Do this once every
              2-3 months for each target / observing mode combination to
              establish repeatability of the zero point offsets. 

     	      Each target in this proposal is observed 6 times in this
     	      calibration program, each visit is 1 orbit, for a total of 12
     	      orbits. The visits are spread throughout the duration of
     	      Cycle 17, taking into account the visibility constraints of
     	      each target. 
               
Accuracy:  0.2 pixel wavelength zero point accuracy 

Comments on Accuracy:  
     
Products:  Reference files, ISR.



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# THE REST OF THIS FORM IS FOR INTERNAL USE
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# Target information (copy for each target)

Target Name.............................: SK191
RA......................................: 01H41M42.0723S +/- 0.1"
Dec.....................................: -73D50'38.20" +/- 0.1"
Flux (and units)........................: V = 11.84	
Visibility window (if known or relevant): (several)
             Comment on choice of target: Several ISM lines useful for
	     	     	       	  	  this calibration. Used for
					  G130M and G160M settings. 

Target Name.............................: NGC330-B37
RA......................................: 00H56M20.7900S +/- 0.1"
Dec.....................................: -72D28'33.80" +/- 0.1"
Flux (and units)........................: V = 13.33
Visibility window (if known or relevant): (several)
             Comment on choice of target: ISM as well as stellar absorption
	     	     	       	          lines can be used. Use for G230L.  


# Table of exposures (copy for each exposure):

Target or lamp..........................: 
Type of Acquisition.....................: 
Detector for observation................: 
Operating mode .........................: 
Spectral Element........................: 
Aperture................................: 
Central Wavelength......................: 
Exposure Time...........................: 
Number of Iterations ...................: 
BOP Predicted Local Count Rate for MAMA.: 
BOP Predicted Global Count Rate for MAMA: 
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: 
Comments: 
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# Special needs of this proposal?

Scheduling: With the current scheduling constraints for the visits, the
     	    targets will be observed in the following windows:

     SK191 (G130M/G160M)
        Visit 01: 30 Aug 09 - 17 Sep 09      
        Visit 03: 19 Oct 09 - 12 Nov 09    
        Visit 04: 11 Feb 10 - 22 Feb 10
        Visit 05: 20 Apr 10 - 01 May 10
        Visit 06: 10 Jun 10 - 24 Jun 10

     NGC330-B37 (G140L)
        Visit 02: 30 Aug 09 - 19 Sep 09
        Visit 08: 21 Oct 09 - 12 Nov 09
     	Visit 09: 13 Feb 10 - 25 Feb 10
     	Visit 10: 17 Apr 10 - 3 May 10
     	Visit 11: 11 Jun 10 - 24 Jun 10
     	Visit 12: 20 Sep 10 - 12 Oct 10

Prerequisites: n/a

PDB update?               no
On-board table update?    no

# Special Requirements:
Real time?                N
Special commanding?       N
Quick Data turnaround?    N
Special timing required?  N
Other?                    N
Describe (& justify) special requirements:


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# Link to Cycle 17 Science

Fraction of science programs supported by this calibration: 75% of COS

List categories of science which can't be executed until after this proposal:
  none
why: 

List categories of science which are best performed contemporaneous with 
this proposal: 
  none
why:

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Expected FTE weeks for analysis:            6   
Required turnaround on analysis (weeks):    
Data volume (Mb needed for analysis):       
Special software needed for analysis? (Describe): 

Description of analysis Plans: