! File: 3239C.PROP ! Database: PEPDB ! Date: 18-FEB-1994:23:12:57 coverpage: title_1: SATURN TIME LAPSE - TARGET OF OPPORTUNITY title_2: CYCLE 0 RETURN 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: 2.75 num_pri: 1 pi_position: PROFESSOR OF PLANETA ! end of coverpage abstract: line_1: This program will obtain sets of exposures of Saturn in several spectral bands. line_2: By selecting filters that are sensitive to atmospheric processes (methane line_3: absorption and molecular scattering), the dynamic behavior can be mapped at line_4: several altitudes within the Saturnian atmosphere. This sequence will utilize line_5: chip PC-6 to continue monitoring velocities and proble cloud heights within line_6: the complex cloud structures observed in Noverber. These observations will line_7: allow us to follow the evolution of the storm. ! ! 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: 3 section: 1 line_1: The proposed PC-6 observations consist of 3 sequences: line_5: 1. "TLAP" - 1 orbit long with 7 exposures. line_6: (2ea - F889N, 1ea - F718M,F588N,F547M,F439w,F336W) ! question: 13 section: 1 line_1: An equatorial storm of the magnitude of the 1990 event is rare in line_2: Saturn's atmosphere. The equatorial region was relatively quiescent line_3: during the 70's and 80's when the Pioneer and Voyager spacecraft line_4: studied this planet. The great equatorial storm of 1990 is a unique line_5: opportunity to observe the fine structure of the region with the HST. line_6: Because these events are infrequent it is important to obtain as much line_7: data as possible to characterize the morphology of the 1990/1991 storm. line_8: If observations can be made this spring to compliment the November line_9: observations we can provide a unique historical record of this storm line_10: and understand the manner in which it dissipates. Groundbased line_11: observations of Saturn in March 1991 show evidence for continuing line_12: storm activity. line_13: This spring we should be able to use cloud tracers to investigate line_14: heights and motions of clouds. Comparison of these winds to the Nov line_15: time frame will provide an interesting and unique measurement of the line_16: 'relaxation' of this storm relative to the background flow (i.e., line_17: presumably the wind profile of the Voyager encounters). These line_18: measurements cannot be obtained by ground-based observations and it is line_19: a rare opportunity to have tracers in the usually bland equatorial line_20: region of Saturn. The temporal and spatial coverage of the requested line_21: ST observations in this proposal allow measurements within the line_22: equatorial region that will compliment the spacecraft missions to the line_23: Saturn system. ! !end of general form text general_form_address: lname: BAUM fname: WILLIAM category: CON inst: LOWELL OBSERVATORY addr_1: PLANETARY RESEARCH CENTER addr_2: 1400 WEST MARS HILL ROAD city: FLAGSTAFF state: AZ zip: 86002 country: USA phone: (602) 774-3358 ! lname: BEEBE fname: RITA category: CON inst: NEW MEXICO STATE addr_1: ASTRONOMY DEPT. city: LAS CRUCES state: NM zip: 88003 country: USA phone: 505-646-1938 ! 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) 35B6-4900 ! lname: INGERSOL fname: ANDREW 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) 356-6167 ! 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 fixed_targets: targnum: 1 name_1: SATURN-A descr_1: WHITE SPOT pos_1: RA= 20H 36M 31.15S +/- 0.01S, pos_2: DEC= -18D 59' 23.5" +/- 0.1" equinox: J2000 comment_1: SATURN, INITIAL ORBIT comment_2: START AT 157.0688 (GUESS) ! targnum: 2 name_1: SATURN-B descr_1: WHITE SPOT pos_1: RA= 20H 36M 30.12S +/- 0.01S, pos_2: DEC= -18D 59' 28.3" +/- 0.1" equinox: J2000 comment_1: SATURN, SECOND ORBIT ! targnum: 3 name_1: SATURN-C descr_1: WHITE SPOT pos_1: RA= 20H 36M 30.11S +/- 0.01S, pos_2: DEC= -18D 59' 28.4" +/- 0.1" equinox: J2000 comment_1: SATURN, FINAL ORBIT comment_2: THREE TARGETS ARE ON SEQUENTIAL comment_3: BUT NOT CONSECUTIVE ORBITS; comment_4: TIMING OF TARGETS TO BE SET comment_5: FROM TABLE SUBMITTED TO M. BUIE ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: TLAP targname: # config: PC opmode: IMAGE aperture: P6 sp_element: F889N num_exp: 1 time_per_exp: 100S priority: 1 param_1: CR-SPLIT=NO,PRE-FLASH=NO req_1: SEQ 1.0-1.5 WITHIN 50M; req_2: SPATIAL SCAN SINGLE-EXP; comment_1: DELETE ONE OF THESE EXPOSURES comment_2: IF REQUIRED TO FIT ORBIT ! linenum: 1.100 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F718M num_exp: 1 time_per_exp: 1.6S priority: ^ param_1: CR-SPLIT=NO, PRE-FLASH=NO, ! linenum: 1.200 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F588N num_exp: ^ time_per_exp: 16S priority: ^ param_1: CR-SPLIT=NO, PRE-FLASH=NO, ! linenum: 1.300 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F547M num_exp: ^ time_per_exp: 1S priority: ^ param_1: CR-SPLIT=NO, PRE-FLASH=NO, ! linenum: 1.400 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F439W num_exp: ^ time_per_exp: 4S priority: ^ param_1: CR-SPLIT=NO, PRE-FLASH=NO, ! linenum: 1.500 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F336W num_exp: ^ time_per_exp: 100S priority: ^ param_1: CR-SPLIT=NO, PRE-FLASH=NO, req_1: SPATIAL SCAN SINGLE-EXP; comment_1: END OF SEQUENCE "TLAP" ! linenum: 2.001 sequence_1: USE sequence_2: TLAP targname: SATURN-A req_1: CYCLE 0 / 2.001-2.003 comment_1: FIRST ORBIT TIMING comment_2: TO BE SET FROM TABLE comment_3: FURNISHED TO M. BUIE comment_4: GUIDE TOL 0.022" COARSE TRACK FOR ALL ! linenum: 2.002 sequence_1: USE sequence_2: TLAP targname: SATURN-B comment_1: SECOND ORBIT. SKIP 1 comment_2: ORBIT FROM THE FIRST AND comment_3: DO NEXT ORBIT. IE: comment_4: DO EVERY OTHER ORBIT. ! linenum: 2.003 sequence_1: USE sequence_2: TLAP targname: SATURN-C comment_1: FINAL ORBIT. THIS IS THE comment_2: FOURTH ORBIT FROM THE FIRST comment_3: IE: comment_4: DO EVERY OTHER ORBIT. ! ! end of exposure logsheet scan_data: line_list: 1.000,1.500 fgs_scan: N cont_dwell: C dwell_pnts: 0 dwell_secs: 0.00 scan_width: 0.0000 scan_length: 0.1312 sides_angle: 0.0000 number_lines: 1 scan_rate: 0.0013 first_line_pa: 251.9810 scan_frame: CEL len_offset: 0.0 wid_offset: 0.0 ! ! end of scan data