! +====================+ ! | PED OUTPUT PRODUCT | ! +====================+ ! ! /spectre/data1/aroman/proposals/6846.prop ! Generated by PREPROCESSOR, version 6.0j ! Date: Wed Feb 7 19:21:17 EST 1996 Proposal_Information Title: Observations of Neptune and Pluto for the "Live From HST" Television Program Proposal_Category: GO/DD Scientific_Category: SOLAR SYSTEM Cycle: 5 Investigators PI_Name: Hedi Hammel PI_Institution: Massachusetts Institute of Technology CoI_Name: Marc Buie CoI_Institution: Lowell Observatory Contact: N Abstract: This program performs 3 HST orbits of solar system observations selected by students involved in the Passport to Knowledge program. There will be 1 orbit of FOC observations of Pluto and 2 orbits of WFPC2 observations of Neptune. Neptune's atmosphere is extremely dynamic. With a series of images, we will determine a relaxation time for changes in vertical aerosol structure by observing Neptune at the same wavelengths as was done in Cycle 4 and Cycle 5. Specifically, we propose to obtain images of Neptune with the Planetary Camera at wavelengths from 410 to 889 nanometers. We will model the aerosol structure by measuring both the general center-to-limb behavior as a function of latitude, and the wavelength-dependent reflectivity of discrete features. If Neptune's clouds have changed yet again, we will study the new structure. The data are part of an educational program called Live from Hubble Space Telescope, and that participation drive s some of the timing of the observations. Questions Observing_Description: We request 4 (6 if time) exposures of Neptune with the WFPC2 in Planetary Camera mode in each of 2 orbits. The exposures in each orbit are (F410M if time), F467M, F547M, (FQCH4N15 if time), and two each at FQCH4P15. The start times of the two orbits should be separated in time by 8 hours to cover all Neptune longitudes. Real_Time_Justification: Special Scheduling Requirement for timing: We request time near 13 March 1996 to coordinate the observations with a live broadcast on 14 March 1996 showing the return of the data from the second orbit. This will maximize the educational aspects of the observations. Calibration_Justification: Additional_Comments: Fixed_Targets Solar_System_Targets Target_Number: 1 Target_Name: PLUTO Description: PLANET Pluto Level_1: STD=PLUTO Level_2: Level_3: Window: Flux: V = 13.7 B-V = 0.7 Comments: Marc Buie indicates that the JPL ephemeris used by MOSS for Pluto may not be the best and most recent. This will be investigated. Target_Number: 2 Target_Name: NEPTUNE Description: PLANET Neptune Level_1: STD=NEPTUNE Level_2: Level_3: Window: Flux: V = 8.8 F(4682.0)=3.51e-12 F(5454.0)=26.6e-13 F(6265.0)=3.77e-13 F(8940.0)=9.98e-14 Comments: The window around 13/14 March 1996 is requested to coordinate with a live TV broadcast. If this window is unavailable, then we can relax the constraint somewhat. Contact PI H. Hammel (MIT). Generic_Targets Scan_Data Visits Visit_Number: 01 Visit_Requirements: ON HOLD BETWEEN 04-Mar-1996:05:11:23.0 AND 04-Mar-1996:07:11:23.0 On_Hold_Comments: Waiting for updated Pluto ephemeris from JPL. Visit_Comments: If the specified BETWEEN window is not schedulable, there are alternates available. They are listed here in priority order: 16-Mar-1996:23:47:15 to 17-Mar-1996:01:47:15, 7-Mar-1996:13:14:40 to 7-Mar-1996:15:14:40, 13-Mar-1996:22:32:36 to 14-Mar-1996:00:32:36, 5-Mar-1996:19:56:22 to 5-Mar-1996:21:56:22, 12-Mar-1996:05:14:15 to 12-Mar-1996:07:14:15, 9-Mar-1996:01:51:56 to 9-Mar-1996:03:51:56, or 15-Mar-1996:11:09:55 to 15-Mar-1996:13:09:55. Exposure_Number: 10 Target_Name: PLUTO Config: FOC/96 Opmode: IMAGE Aperture: 512X512 Sp_Element: F410M,F2ND,F1ND Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 900S Special_Requirements: NO SPLIT Comments: Exposure_Number: 20 Target_Name: PLUTO Config: FOC/96 Opmode: IMAGE Aperture: 512X512 Sp_Element: F278M,F275W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 900S Special_Requirements: END ORBIT NO SPLIT Comments: Visit_Number: 02 Visit_Requirements: BETWEEN 04-Mar-1996 AND 15-Mar-1996 On_Hold_Comments: Visit_Comments: Exposure_Number: 10 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F410M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: Comments: Exposure_Number: 20 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F467M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 40S Special_Requirements: Comments: Exposure_Number: 30 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F547M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 14S Special_Requirements: Comments: Exposure_Number: 40 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: FQCH4N15 Wavelength: 6211.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Exposure_Number: 50 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4P15 Sp_Element: FQCH4P15 Wavelength: 8922.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Can be shortened somewhat if necessary. Exposure_Number: 60 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4P15 Sp_Element: FQCH4P15 Wavelength: 8922.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Can be shortened somewhat if necessary. Visit_Number: 03 Visit_Requirements: AFTER 02 BY 7.5H TO 8.5H On_Hold_Comments: Visit_Comments: 8 hours after 02 is optimum. Exposure_Number: 10 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F410M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 100S Special_Requirements: Comments: Exposure_Number: 20 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F467M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 40S Special_Requirements: Comments: Exposure_Number: 30 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: F547M Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 14S Special_Requirements: Comments: Exposure_Number: 40 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4N15 Sp_Element: FQCH4N15 Wavelength: 6211.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Exposure_Number: 50 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4P15 Sp_Element: FQCH4P15 Wavelength: 8922.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Can be shortened somewhat if necessary. Exposure_Number: 60 Target_Name: NEPTUNE Config: WFPC2 Opmode: IMAGE Aperture: FQCH4P15 Sp_Element: FQCH4P15 Wavelength: 8922.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: Comments: Can be shortened somewhat if necessary. Data_Distribution ! Defaults indicated; change if desired Medium: 8MM Blocking_Factor: 10 Ship_To: STSCI Ship_Via: Recipient_Email: aroman@stsci.edu ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator