! File: 1129C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:02:50:31 coverpage: title_1: SATURN - SOLAR SYSTEM (WF/PC-25): title_2: CYCLE 3 AND FUTURE-CYCLE CONTINUATION sci_cat: SOLAR SYSTEM proposal_for: GTO/WFC pi_title: PROF. pi_fname: JAMES pi_mi: A. pi_lname: WESTPHAL pi_inst: CALTECH pi_country: USA pi_phone: (818) 356-4900 keywords_1: SATURN, ATMOSPHERE DYNAMICS hours_pri: 3.20 num_pri: 1 pi_position: PROFESSOR OF PLANETA ! end of coverpage abstract: line_1: This program will obtain two four-color complete 360 degree maps with the WF/PC line_2: to measure the Saturnian atmospheric motion. The first set will be obtained line_3: within a ten-hour period to allow for adequate overlap between the longitudinal line_4: strips. Then twenty hours later a second map will be obtained to complete the line_5: dynamical data set. Since Saturn rotates approximately fifty degrees per HST line_6: orbit, these dynamical sets should be obtained for seven sequential orbits. UV line_7: imaging at the high spatial resolution of HST provides an excellent method of line_8: studying the upwelling processes, especially in the time domain. ! ! end of abstract general_form_proposers: lname: WESTPHAL fname: JAMES title: PROF. mi: A. inst: CALTECH country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: The dynamics of the Saturnian atmosphere will yield new scientific insight into line_2: two main areas: 1) the energy balance in the convective envelope and line_3: atmosphere, and 2) the mechanism for maintaining large scale systems in the line_4: atmosphere. The Voyager spacecraft obtained high resolution views of this line_5: turbulent atmosphere. The dynamical set obtained with the WF/PC will allow a line_6: direct comparison of the wind fields and evolutionary properties of cloud line_7: sysems with the Voyager data sets. The observing sequence will consist of a line_8: four-color longitude map obtained within a ten-hour period. Then twenty hours line_9: later a second map set should be obtained to complete the dynamical set. Since line_10: Jupiter rotates approximately 50 degrees per HST orbit, this dynamical set line_11: should be obtained for seven sequential orbits. This will provide a multicolor line_12: map with complete longitude coverage. The filters have been chosen to optimize line_13: the contrast of the atmospheric features from ground-based and Voyager data line_14: analysis (F336M, F439M, F718M, and F889N). The two full rotation data sets line_15: would contain image pairs separated in time by 30 hours with similar central line_16: meridians. Hence, velocity errors and limb-darkening and various line_17: foreshortening effects will be minimized. line_19: The exploration in the near- and vacuum-UV will produce new data at a spatial line_20: resolution never obtained in this spectral region. Moderate bandwidth UV line_21: imaging at high spatial resolution of HST covering regions of known absorption line_22: bands and nearby continuum (170-210 nm) provides an excellent method of line_23: studying the upwelling processes, especially in the time domain. ! question: 3 section: 1 line_1: Since Saturn rotates approximately 50 degress per HST orbit, this dynamical set line_2: should be obtained for seven sequential orbits. This will provide a multicolor line_3: map with complete longitude coverage. The filters have been chosen to optimize line_4: the contrast of the atmospheric features from ground-based and Voyager data line_5: analysis (F336M, F439M, F718M, and F889N). The two full rotation data sets line_6: would contain image pairs separated in time by 30 hours with similar central line_7: meridians. Hence, velocity errors and limb-darkening and various line_8: foreshortening effects will be minimized. line_10: Complete sets to be obtained in cycle 9. line_12: comment continuation from CP11: sequential required; planetary tracking line_13: required ! question: 13 section: 1 line_1: Imaging observations of the Saturnian atmosphere in four filters (F336M, F439M, line_2: F718M, and F889N) will yield new scientific insight into two main areas: 1) line_3: the energy balance in the convective envelope and atmosphere, and 2) the line_4: mechanism for maintaining large scale systems in the atmosphere. This will line_5: provide a multicolor map with complete longitude coverage. The filters have line_6: been chosen to optimize the contrast of the atmospheric features from line_7: ground-based and Voyager data analysis. ! !end of general form text general_form_address: lname: GUNN fname: JAMES mi: E. category: CON inst: PRINCETON UNIVERSITY addr_1: ASTROPHYSICAL SCIENCE addr_2: PEYTON HALL city: PRINCETON state: NJ zip: 08540 country: USA phone: (609) 452-3802 ! lname: FABER fname: SANDRA mi: M. category: CON inst: UC SANTA CRUZ - LICK OBSERVATORY addr_1: NATURAL SCIENCE II, BLDG. 160 city: SANTA CRUZ state: CA zip: 95064 country: USA phone: (408) 429-2944 ! lname: DANIELSON fname: G. EDWARD category: CON inst: CALTECH addr_1: M/S 170-25 addr_2: DIVISION OF GEOLOGICAL & PLANETARY SCIENCES city: PASADENA state: CA zip: 91125 country: USA phone: (818) 356-4900 ! lname: WESTPHAL fname: JAMES mi: A. title: PROF. category: PI inst: CALTECH addr_1: M/S 170-25 addr_2: DIVISION OF GEOLOGICAL addr_3: & PLANETARY SCIENCES city: PASADENA state: CA zip: 91125 country: USA phone: (818) 356-4900 ! ! end of general_form_address records ! No fixed target records found solar_system_targets: targnum: 1 name_1: SATURN descr_1: PLANET SATURN lev1_1: STD=SATURN ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: SCLM targname: # config: PC opmode: IMAGE aperture: PCALL sp_element: F439W num_exp: 1 time_per_exp: 2S priority: # param_1: CR-SPLIT=NO,PRE-FLASH=YES req_1: GROUP 1-4 WITHIN 95 M; req_2: POS TARG 10,-10 / 1-4; req_3: PCS MODE C / 1-4 comment_1: CYCLE 3-9 PROPOSAL VERSION comment_2: TRL/RML 3/26/92 15:30. ! linenum: 2.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F718M num_exp: ^ time_per_exp: 1S priority: ^ param_1: ^ ! linenum: 3.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F889N num_exp: ^ time_per_exp: 14S priority: ^ param_1: ^ ! linenum: 4.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F336W num_exp: ^ time_per_exp: 50S priority: ^ param_1: ^ ! linenum: 11.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: PERIOD 377D +/- 0.5D; req_2: ZERO-PHASE 14-JUL-90 +/- 1D; req_3: PHASE 0.0 +/- 0.08; req_4: CYCLE 4 / 11-27; req_5: COND IF TAC OK / 11-27; comment_1: TAKE WITHIN +/- 1 MONTH OF OPPOSITION comment_2: IN 1990 OR 1991. REPEAT EXPOSURES comment_3: EVERY ORBIT (95 MIN STANDS FOR ONE comment_4: ORBIT). ! linenum: 12.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 11 BY 95M +/- 5M; ! linenum: 13.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 12 BY 95M +/- 5M; ! linenum: 14.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 13 BY 95M +/- 5M; ! linenum: 15.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 14 BY 95M +/- 5M; ! linenum: 16.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 15 BY 95M +/- 5M; ! linenum: 17.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 16 BY 95M +/- 5M; ! linenum: 21.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 11 BY 30H +/- 1H; ! linenum: 22.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 21 BY 95M +/- 5M; ! linenum: 23.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 22 BY 95M +/- 5M; ! linenum: 24.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 23 BY 95M +/- 5M; ! linenum: 25.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 24 BY 95M +/- 5M; ! linenum: 26.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 25 BY 95M +/- 5M; ! linenum: 27.000 sequence_1: USE sequence_2: SCLM targname: SATURN priority: 2 req_1: AFTER 26 BY 95M +/- 5M; ! ! end of exposure logsheet ! No scan data records found