! File: 3185C.PROP ! Database: PEPDB ! Date: 18-FEB-1994:21:04:20 coverpage: title_1: PECULIAR AND INTERACTING GALAXIES (WF/PC-01) title_2: CYCLE 1 sci_cat: GALAXIES & CLUSTERS proposal_for: GTO/WFC cont_id: 1105 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: PECULIAR GALAXIES, INTERACTING GALAXIES hours_pri: 1.17 num_pri: 18 pi_position: JAMES WESTPHAL ! end of coverpage abstract: line_1: Imaging observations with the WFC and PC are specified for a small sample of line_2: peculiar and interacting galaxies. In each instance the observations will line_3: benefit variously from the spatial resolution and ultraviolet sensitivity line_4: afforded by the Space Telescope and may reveal important facts concerning the line_5: nature of the objects observed. ! ! end of abstract general_form_proposers: lname: WESTPHAL fname: JAMES mi: A. inst: CALTECH country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: NGC 4486. PC exposures with nine medium bandpass filters covering the spectral line_2: range from 2000A to 1 micron. A variety of exposure durations, totaling ~4.5 line_3: hrs. are used to allow for differences in spectrophotometric response. There line_4: are also exposures with the three polarizers (~45 min. total). line_6: All other objects, except as noted, get ~45 min. WFC exposures through each line_7: filter of certain standard filter sets: line_8: 1-color (F606W) : NGC 4753, NGC 6251 line_9: (F555W) : I-Zw-1 (PC), I-Zw-121 (PC) line_11: 2-color (F555W, F785LP) : UGC 6456, Arp 230 line_12: (F555W, F850LP) : NGC 3034, NGC 5128 line_14: 3-color (F555W, F702W, F785LP) : NGC 4476, NGC 4826, IC 4553/4, line_15: NGC 7742, Arp 148, NGC 1275 (90 min. exp.) line_16: 3C405 (90 min. exp.) line_18: 4-color (F230W, F555W, F785LP): NGC 6745 (90 min. exp.) IC 391 ! question: 5 section: 1 line_1: All principal exposures are accompanied by complementary exposures 1 and/or 2 line_2: orders of magnitude shorter in duration, in satisfaction of the dual line_3: requirement to cover a large expected luminous dynamic range and to afford a line_4: means of cosmic-ray discrimination. NOTE: The Institute is NOT to do any line_5: "automatic" cosmic-ray splitting, and CR-SPLIT has NOT been requested ( line_6: explicitly specified exposures will do nicely. line_7: In all cases, exposure (shutter-open) times have been sized to fit, either line_8: singly or in combination, single orbit observing opportunities of 2700 seconds line_9: nominal duration, including lost-time allowances of 120 seconds between line_10: exposures of a single-orbit observing opportunity differ significantly from the line_11: nominal 2700 seconds, the longest indicated exposure time in a single-orbit line_12: observation sequence should be increased or decreased by the appropriate line_13: necessary amount. line_15: For each object there will be special positioning requirements (TBD) and line_16: special orientation requirements. ! question: 6 section: 1 line_1: It is desired that all exposures longer than 1000 sec be taken after the line_2: telescope has passed beyond the brightly lit limb of the Earth (see note on line_3: "dark time" on exposure logsheets). It is not requested that the telescope line_4: actually be within the Earth's shadow. Dark time is needed to minimize line_5: scattered light and maximize S/N faint features. The above guideline of 1000 line_6: sec may need modification after real experience in orbit. ! question: 13 section: 1 line_1: Imaging observations of the following peculiar or interacting galaxies : NGC line_2: 4486, NGC 6745, IC 391, NGC 1275, 3C405, NGC 4826, IC 4553/4, Arp 148, NGC line_3: 4476, NGC 7742, UGC 6456, Arp 230, NGC 3034, NGC 5128, NGC 6251, NGC 4753, line_4: 1Zw1, & 1Zw121. Filters: polarizers & 9 filters from 2000A to 1 micron for NGC line_5: 4486, far UV, visual, red, & near infrared for the next 2 objects, visual, red line_6: & near infrared for the next 7, visual & near infrared for the next 4; and line_7: visual for the last 4. ! !end of general form text general_form_address: lname: WESTPHAL fname: JAMES mi: A. category: PI inst: CALTECH ! lname: LYNDS fname: C. mi: R. category: CON inst: NOAO, KITT PEAK NATIONAL OBSERVATORY addr_1: 950 N. CHERRY AVENUE city: TUCSON state: AZ zip: 85726 country: USA phone: (602) 327-5511 ! 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, addr_2: BLDG. 160 city: SANTA CRUZ state: CA zip: 95064 country: USA phone: (408) 429-2944 ! ! end of general_form_address records fixed_targets: targnum: 17 name_1: IZW121 descr_1: COMPACT GALAXY pos_1: RA= 15H35M20.8S +/-0.1S, pos_2: DEC= +54D43'21" +/- 1", equinox: 1950 pm_or_par: NO rv_or_z: Z=0.0384 ! targnum: 18 name_1: PSF-IZW121 descr_1: PSF STAR descr_2: FOR IZW121 pos_1: RA= 15H 35M 7.1S +/-0.1S, pos_2: DEC= +55D 7' 11" +/- 1", equinox: 1950 pm_or_par: NO ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 241.000 targname: IZW121 config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 3 time_per_exp: 100S fluxnum_1: 1 priority: 2 param_1: CR-SPLIT=NO,PRE-FLASH=YES req_1: CYCLE 1 / 241-244; req_2: GROUP 241-244 NO GAP; req_3: GUIDE TOL 0.030" / 241-242 comment_1: REVISED 2/18/91 CRL/EJO/RML. comment_2: ONLY CYCLE 1 ACTIVE. ! linenum: 242.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F785LP num_exp: 2 time_per_exp: 180S fluxnum_1: ^ priority: ^ param_1: ^ req_1: SEQ 242-244 NON-INT ! linenum: 243.000 targname: PSF-IZW121 config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 0.11S fluxnum_1: 1 priority: 2 param_1: CR-SPLIT=NO,PRE-FLASH=YES req_1: GUIDE TOL 0.5" / 243-244 comment_1: PSF OBS FOR GAL. ON GYROHOLD. SHORT comment_2: EXP FREEZES JITTER. STAR WITHIN 2DEG comment_3: OF GAL. DO IMMED AFTER GAL, NO EARTH comment_4: OCCULT ALLOWED, TO KEEP ACCURATE comment_5: POINTING. CENTERING ERROR OF PSF STAR comment_6: IN PC6 TO BE LESS THAN 3". ! linenum: 244.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F785LP num_exp: ^ time_per_exp: 0.14S priority: ^ param_1: ^ comment_1: PSF SP. TYPE G5. SAO 83865. ! ! end of exposure logsheet ! No scan data records found