! Proposal 6191, submission 1 ! PI: BURROWS, CHRIS ! Received Wed Jul 12 17:12:32 EDT 1995 ! From: sbaggett@stsci.edu Proposal_Information Title: WFPC2 CYCLE 4 CAL: UV FLATS Proposal_Category: CAL/WFC Scientific_Category: Cycle: 5 Investigators PI_name: BURROWS, CHRIS PI_Institution: STSCI CoI_Name: BAGGETT, SYLVIA CoI_Institution: STSCI Questions Observing_Description: Twice during Cycle 5, 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 5, for a total of 4 lamp cycles; execution dates are planned for 9/95 and 3/96. Note: the SU duration for each UVFLAT visit should be kept the same as the durations used during Cycle 4 (proposal 5655); the lamp should not remain on for periods of time longer than those used in Cycle 4. 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 5 proposal 6189)/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. Visits Visit_Number: 11 Visit_Requirements: GROUP 11-14 WITHIN 12H; SEQ 11-12 WITHIN 5M On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER A DECON 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: 12 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 11 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: 13 Visit_Requirements: SEQ 13-14 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: 14 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 13 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: !!!!!! SECOND ITERATION OF UVFLATS !!!!!!!!!!!!!!!!! Visit_Number: 21 Visit_Requirements: GROUP 21-24 WITHIN 12H; SEQ 21-22 WITHIN 5M On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER A DECON 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: 22 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 21 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: 23 Visit_Requirements: SEQ 23-24 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: 24 Visit_Requirements: On_Hold_Comments: Visit_Comments: SCHEDULE IMMEDIATELY AFTER VISIT 23 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: