! File: 5044C.PROP ! Database: PEPDB ! Date: 23-FEB-1994:17:23:50 coverpage: title_1: STRUCTURE OF QUASARS AND RELATED OBJECTS - title_2: RETAKE OF 3C256 sci_cat: QUASARS & AGN proposal_for: GTO/WFC cont_id: 3228 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: QUASAR, AGN,RADIO GALAXY, EMISSION LINE GALAXY,BL LAC keywords_2: OBJECT hours_pri: 1.24 num_pri: 1 pi_position: PROFESSOR OF PLANETA ! end of coverpage abstract: line_1: The aims of the program are (1) to detect, and to study the morphology of line_2: galaxies underlying QSOs and AGNs, galaxies associated with them in groups and line_3: clusters, and associated structures such as jets; (2) to detect bright nuclear line_4: and extranuclear structure on small angular scales; (3) to detect and examine line_5: additional images and lensing galaxies in gravitational lenses; (4) to detect line_6: extended emission line structure in quasars. ! ! 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: The general sequence of observations is two or more short observations in V and line_2: I, in which the quasar or nucleus is unsaturated, in order to look for bright line_3: small scale structure close to the nucleus, and a long exposure in I to examine line_4: the parent galaxy, nearby galaxies, and other extended structure. The short line_5: CR-SPLIT observations for the long exposures will provide an intermediate I line_6: exposure, and considered an integral part of the program. For some of the line_7: objects, the short exposures are omitted because they will be obtained with the line_8: PC as part of a joint GTO proposal with the Astrometry team. ! question: 6 section: 1 line_1: Dark time and uninterrupted exposures are required to maximize signal/noise. line_3: For all exposures >=1000sec, we request dark time. This is needed to minimize line_4: scattered light. By dark time we mean that the telescope should be beyond the line_5: brightly lit limb of the Earth in the dark half of the orbit. We do not require line_6: that the telescope actually be within the Earth's shadow. See note on exposure line_7: logsheet. The above guidline of 1000 sec may need revision after experience in line_8: orbit. ! question: 8 section: 1 line_1: Small position adjustments (~40 arcsec for the WFC and ~17 arcsec for the PC) line_2: will be required in order to center the object of interest on one of the CCDs. line_3: The CCD chosen will in general be one for which saturated images on the frame line_4: do not overflow in a direction which runs through features of interest. This line_5: will depend on the orientation of the telescope at the time of the observation. line_6: It may also sometimes require constraints on the roll angle, although this can line_7: probably generally be avoided. ! question: 13 section: 1 line_1: The aims of the program are (1) to detect, and to study the morphology of line_2: galaxies underlying QSOs and AGNs, galaxies associated with them in groups and line_3: clusters, and associated structures such as jets; (2) to detect bright nuclear line_4: and extranuclear structures on small angular scales; (3) to detect and examine line_5: additional images and lensing galaxies in gravitational lenses; (4) to detect line_6: extended emission line structure in quasars. ! !end of general form text general_form_address: lname: WESTPHAL fname: JAMES mi: A. category: PI inst: CALTECH ! lname: KRISTIAN fname: JEROME category: CON inst: MT. WILSON & LAS addr_1: CAMPANAS OBSERVS. addr_2: 813 SANTA BARBARA ST. city: PASADENA state: CA zip: 91101 country: USA phone: (818)577-1122 ! lname: GUNN fname: JAMES mi: E. category: CON inst: PRINCETON UNIVERSITY addr_1: ASTROPHYSICAL SCIENCES addr_2: PEYTON HALL city: PRINCETON state: NJ zip: 08540 country: USA phone: (609)452-3802 ! lname: LYNDS fname: C. mi: R. category: CON inst: NOAO, KITT PEAK NATIONAL OBSERVATORY addr_1: 950 N CHERRY city: TUCSON state: AZ zip: 86726 country: USA phone: (602)327-5511 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: 3C256 descr_1: E, 315 pos_1: RA=11H18M04.15S+/-0.1S, pos_2: DEC=+23D44'21"+/-1" equinox: 1950 pm_or_par: N rv_or_z: Z=1.82 plate_req: NO comment_1: RADIO GALAXY fluxnum_1: 1 fluxval_1: V=21.5 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: 3C256 config: PC opmode: IMAGE aperture: PC6 sp_element: F785LP num_exp: 2 time_per_exp: 900S priority: 1 param_1: CR-SPLIT=NO, param_2: PRE-FLASH=YES, req_1: CYCLE 3 ! ! end of exposure logsheet ! No scan data records found