0The list of Investigators does not match the STScI records for this program.This program was previously submitted (incuding a revision by adding PM for target GD 153) and processed as a WFC3 routine calibration program.
This program is then updated to include WFC3 special calibration (Investigation of Time-depenedant Sensitivity in IR Grism modes) components. The following changes were made to the original submission:
- One visit (containing a single orbit) on target GD71 was added with (G102, F098M) and (G141, F140W)
- One visit (containing a single orbit) on target GRW+70 was added with (G102, F098M) and (G141, F140W)
- Structure of the visit on GD153 was updated (different sets of POS-TARGs were used) to optimize the observations.
- Co-I Ralph Bohlin was added.
- Experiencing submission
PC Weston Eck was notified of the changes made945264823----- Attempting Submission 1 (Fri Aug 14 03:41:14 GMT 2020) -----
----- Attempting Submission 2 (Wed Sep 02 19:05:10 GMT 2020) -----
----- Attempting Submission 3 (Wed Dec 16 21:41:20 GMT 2020) -----Added CoI; notofied PC of the changes madeWFC3 IR Grisms: Flux/Trace CalibrationThis program will observe GD-153 to verify the flux calibration near the center of the field and at a couple of new positions using the WFC3 IR G102 and G141 grisms. The data will be used also to calculate wavelength solutions for the grisms, and will be compared with those derived from previous programs:
15728
15587
15728
14994
14544
14386
14024
13579
13092
12702
12357
to check for any time evolution of the calibration.
This program will also observe GD-71 and GRW+70 to verify flux calibration and check time dependent sensitivity evolution of the G102 and G141 observing modes by comparing with previous observation (most recent programs being 14024 and 13575 for GD-71 and GRW+70, respectively).Observations of GD-153 to verify the flux calibration near the center of the field and at a few other previously observed positions using the WFC3 IR G102 and G141 grisms. The data will be used to calculate wavelength solutions for the grisms, and will be compared with those derived from previous programs.
Observations will be taken with postargs of (-20,-0) (-20,+15) (-20,-15)
Observations of GD-71 to verify the flux calibration near the center of the field and at a few other previously observed positions using the WFC3 IR G102 and G141 grisms. The data will be used to calculate wavelength solutions for the grisms, and will be compared with those derived from previous programs. These data will also be used to check time dependant sensitivity of G102 and G141 observing modes
Observations will be taken with postargs of (-20,-0) (-20,+15) (-20,-15) (-40,+0)
Observations of GRW+70 to verify the flux calibration near the center of the field and at a few other previously observed positions using the WFC3 IR G102 and G141 grisms. The data will be used to calculate wavelength solutions for the grisms, and will be compared with those derived from previous programs. These data will also be used to check time dependant sensitivity of G102 and G141 observing modes
Observations will be taken with postargs of (-20,-0) (-20,+15) (-20,-15) (-40,+0)0falsefalseRESTRICTEDSTARDAAccording to ISR WFC3-2011-05, GD-153 is used as the primary flux calibrator for the WFC3 IR grisms.J2000J2000STARDAGD-71 is a primary HST flux standard that has been used in the past to calibrate the NICMOS and ACS grism modes, which provides us with the ability to cross-calibrate between instruments. GD-71 is specifically chosen for the WFC3 IR grism calibration because it will provide an aditional flux calibration target (GD-153 is used in SMOV for the IR grism calibration), so that the calibration is not based on a single target. An additional calibration target also minimizes the potential for problems from other nearby sources in the field.J2000J2000CALIBRATIONPHOTOMETRICGRW+70 is a primary HST flux standard. GRW+70 is specifically chosen for the WFC3 IR grism calibration because it will provide an aditional flux calibration target (GD-153 is used in SMOV for the IR grism calibration), so that the calibration is not based on a single target. An additional calibration target also minimizes the potential for problems from other nearby sources in the field.HIP-66578J2000J = 13.25The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode./Users/dsom/workarea/WFC3_projects/Cy28_Cal/PhaseII/WFC3_IR_grism_fluxcal/updated_submission/OP-cache/16408-v01.xmlVisit targetting GD153(Tic-Visit
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