! Proposal 6908, submission 1 ! PI: Casertano, Stefano ! Received Thu Mar 21 14:08:21 EST 1996 ! From: shireen@stsci.edu !6908.prop !Execute before and after refurb. Proposal_Information Title: WFPC2 CYCLE 6 CAL: UV FLATS Proposal_Category: CAL/WF2 Scientific_Category: Cycle: 6 Investigators PI_name: Casertano, Stefano PI_Institution: STSCI Abstract: UV flat fields will be obtained with the cal-channel's ultraviolet lamp (UVFLAT) using the UV filter set (F122M, F170W, F160BW, F185W, and F336W). The UV flats will be used to monitor UV flat field stability and the stability of the Woods filter (F160BW) by using F170W as the control. The F336W ratio of VISFLAT (Cycle 6 proposal 0005)/UVFLAT ratio will provide a diagnostic of the UV flat field degradation and tie the UVFLAT and VISFLAT flat field patterns together. Two supplemental darkframes must be obtained immediately after each use of the lamp, in order to check for possible afterimages. Questions Observing_Description: Execute before and after the refurbishment mission, immediately after a decontamination procedure. UV flats are obtained with the UV filter set (F122M, F170W, F160BW, F185W, and F336W); each UV lamp usage is followed by two darks. Since the UV lamp is degrading over time, its use must be minimized: this proposal is the only one to use the lamp during Cycle 6, for a total of 4 lamp cycles. Note: the SU duration for each UVFLAT visit should be kept the same as the durations used during Cycle 5 (proposal 6191); the lamp should not remain on for periods of time longer than those used in Cycle 5. Visits !!------------------------------------------------------------------- Visit_Number: 1 Visit_Requirements: GROUP 1-4 WITHIN 12H; SEQ 1-2 WITHIN 5M On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER A DECON. BEFORE REFURBISHMENT MISSION Exposure_number: 10 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F160BW Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 1000S Special_Requirements: Exposure_number: 20 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F185W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 600S Special_Requirements: Comments: Visit_Number: 2 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 1 Exposure_number: 60 Target_Name: DARK Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: DEF Wavelength: Optional_Parameters: CR-SPLIT=NO, CLOCKS=NO, ATD-GAIN=7 Number_of_iterations:2 Time_Per_Exposure: 1800S Special_Requirements: Comments: Visit_Number: 3 Visit_Requirements: SEQ 3-4 WITHIN 5M On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER DECON Exposure_number: 10 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F122M Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 1000S Special_Requirements: Comments: Exposure_number: 20 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F170W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 400S Special_Requirements: Comments: Exposure_number: 30 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F336W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 30S Special_Requirements: Comments: Visit_Number: 4 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 3 Exposure_number: 60 Target_Name: DARK Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: DEF Wavelength: Optional_Parameters: CR-SPLIT=NO, CLOCKS=NO, ATD-GAIN=7 Number_of_iterations:2 Time_Per_Exposure: 1800S Special_Requirements: Comments: !!------------------------------------------------------------------- !!!!!! POST-REFURBISHMENT VISITS !!!!!!!!!!!!!!!!! Visit_Number: 5 Visit_Requirements: GROUP 5-8 WITHIN 12H; SEQ 5-6 WITHIN 5M On_Hold_Comments: !AFTER REFURBISHMENT MISSION Visit_Comments: SCHEDULE IMMEDIATELY AFTER A DECON. AFTER REFURB. MISSION Exposure_number: 10 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F160BW Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 1000S Special_Requirements: Exposure_number: 20 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F185W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 600S Special_Requirements: Comments: Visit_Number: 6 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 5 Exposure_number: 60 Target_Name: DARK Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: DEF Wavelength: Optional_Parameters: CR-SPLIT=NO, CLOCKS=NO, ATD-GAIN=7 Number_of_iterations:2 Time_Per_Exposure: 1800S Special_Requirements: Comments: Visit_Number: 7 Visit_Requirements: SEQ 7-8 WITHIN 5M On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER DECON Exposure_number: 10 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F122M Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 1000S Special_Requirements: Comments: Exposure_number: 20 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F170W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 400S Special_Requirements: Comments: Exposure_number: 30 Target_Name: UVFLAT Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: F336W Wavelength: Optional_Parameters: ATD-GAIN=7, CR-SPLIT=NO Number_of_iterations:1 Time_Per_Exposure: 30S Special_Requirements: Comments: Visit_Number: 8 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 7 Exposure_number: 60 Target_Name: DARK Config: WFPC2 Opmode: IMAGE Aperture: WFALL Sp_Element: DEF Wavelength: Optional_Parameters: CR-SPLIT=NO, CLOCKS=NO, ATD-GAIN=7 Number_of_iterations:2 Time_Per_Exposure: 1800S Special_Requirements: Comments: Data_Distribution Medium: 8MM Blocking_Factor: 10 Ship_To: PI_Address Ship_Via: UPS Recipient_Email: