! Proposal 6941, submission 4 ! PI: Stefano Casertano ! Received Mon Sep 23 17:39:08 EDT 1996 ! From: shireen@stsci.edu Proposal_Information Title: WFPC2 Cycle 6 Astrometry Verification Proposal_Category: CAL/WF2 Scientific_Category: Cycle: 6 Investigators PI_Name: Stefano Casertano PI_Institution: STScI Abstract: This program will verify accuracy and stability of geometric transformation and relative astrometry solution Questions Observing_Description: A very rich star field in Omega Centauri will be observed in five different positions with relative shifts of 40" in each coordinate. Positions of more than 2000 stars per chip will be compared between pointings using the three different astrometric solutions provided by Gilmozzi, Holtzman and Trauger, in order to verify and refine their accuracy. (Differences of up to 1 PC pixel exist in some regions of the field of view.) A very densely populated field is chosen in order to achieve better coverage of the field of view, even if at the expense of the accuracy of individual position measurements. Observations will be carried out in three filters, F555W, F300W, and F814W, to provide a verification and/or correction of the wavelength dependence of the solution. The F555W observation is repeated with smaller shifts of 15" to ensure a better coverage of the PC. Real_Time_Justification: Calibration_Justification: Additional_Comments: Fraction of GO/GTO Programs Supported is 20%. Also supports WFPC2-assisted target acquisitions for other instruments 4 pointed orbits needed for this program Accuracy expected better than 0.01"; required better than 0.05" (full field of view). Products: Improvements in METRIC and in the aperture reference file if required; ISR Fixed_Targets Target_Number: 1 Target_Name: OMEGA-CEN Alternate_Names: Description: STELLAR CLUSTER, GLOBULAR CLUSTER Position: RA=13H 27M 11.83S +/- 0.1S, DEC= -47D 29' 54.7" +/- 1", PLATE-ID=ZZZR Equinox: 2000 RV_or_Z: RA_PM: Dec_PM: Epoch: Annual_Parallax: Flux: v=21 Comments: Visits Visit_Number: 1 Visit_Requirements: ORIENT 24.7D to 64.7D On_Hold_Comments: Visit_Comments: Exposure_Number: 1 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 0, 0 Comments: Exposure_Number: 2 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 0, 0 Comments: Exposure_Number: 3 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 0, 0 Comments: Exposure_Number: 4 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 0.25, 0.25 Comments: Exposure_Number: 5 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 0.25, 0.25 Comments: Exposure_Number: 6 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 0.25, 0.25 Comments: Exposure_Number: 7 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 35, 35 Comments: Exposure_Number: 8 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35, 35 Comments: Exposure_Number: 9 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35, 35 Comments: Exposure_Number: 10 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 35.25, 35.25 Comments: Exposure_Number: 11 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35.25, 35.25 Comments: Exposure_Number: 12 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35.25, 35.25 Comments: Exposure_Number: 13 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 35, -35 Comments: Exposure_Number: 14 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35, -35 Comments: Exposure_Number: 15 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35, -35 Comments: Exposure_Number: 16 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG 35.25, -35.25 Comments: Exposure_Number: 17 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35.25, -35.25 Comments: Exposure_Number: 18 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG 35.25, -35.25 Comments: Exposure_Number: 19 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG -35, -35 Comments: Exposure_Number: 20 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35, -35 Comments: Exposure_Number: 21 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35, -35 Comments: Exposure_Number: 22 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG -35.25, -35.25 Comments: Exposure_Number: 23 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35.25, -35.25 Comments: Exposure_Number: 24 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35.25, -35.25 Comments: Exposure_Number: 25 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG -35, 35 Comments: Exposure_Number: 26 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35, 35 Comments: Exposure_Number: 27 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35, 35 Comments: Exposure_Number: 28 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F300W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 160s Special_Requirements: POS TARG -35.25, 35.25 Comments: Exposure_Number: 29 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35.25, 35.25 Comments: Exposure_Number: 30 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F814W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100s Special_Requirements: POS TARG -35.25, 35.25 Comments: Exposure_Number: 31 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: POS TARG 15, 15 Comments: Exposure_Number: 32 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: POS TARG 15, -15 Comments: Exposure_Number: 33 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: POS TARG -15, -15 Comments: Exposure_Number: 34 Target_Name: OMEGA-CEN Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F555W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: POS TARG -15, 15 Comments: Data_Distribution Medium: 8MM Blocking_Factor: 10 Ship_To: PI_Address Ship_Via: UPS Recipient_Email: