! File: 3057C.PROP ! Database: PEPDB ! Date: 18-FEB-1994:13:24:42 coverpage: title_1: FUV PRISM SPECTRUM OF A HIGH REDSHIFT QSO sci_cat: QUASARS & AGN proposal_for: SAT/FOC pi_fname: DUCCIO pi_lname: MACCHETTO pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: (301) 338 4790 keywords_1: OBJECTIVE PRISMS hours_pri: 1.00 num_pri: 1 pi_position: SPD HEAD ! end of coverpage abstract: line_1: Had the OTA PSF been as anticipated, then use of the the ultraviolet line_2: objective prisms of the Faint Object Camera would certainly have been line_3: the fastest and easiest means of obtaining exploratory low resolution line_4: spectra of objects. Whether or not this still is the case can only line_5: be checked by observation. line_6: One of several key FOC GTO programs employing the prisms involves carrying line_7: out an FUV spectroscopic "mini-survey" of a number of Z>3.1 quasars with line_8: the aim of identifying one or more objects that are not completely absorbed line_9: by intervening HI Lyman continuum absorption at emitted HeII 304 A - line_10: thereby permitting the detection of the anticipated "HeII forest" matching line_11: that seen in HI Lyman alpha, and the HeII equivalent of the Gunn-Peterson line_12: test for intergalactic helium to be carried out. line_13: It is proposed that a series of FOC FUV prism exposures of one of the qso's line_14: from the FOC GTO program be brought forward in order to evaluate the line_15: performance of the FOC prisms in with the present OTA PSF. A suitable line_16: target is 2204-409. This quasar is relatively bright line_17: (V=17.8) and is known to contain no strong HI Lyman limit or damped Lyman line_18: alpha absorption systems down to the atmospheric cutoff. ! ! end of abstract general_form_proposers: lname: MACCHETTO fname: DUCCIO inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA esa: Y ! lname: JAKOBSEN fname: PETER inst: ESA country: NETHERLANDS esa: Y ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: ! question: 5 section: 1 line_1: ! question: 13 section: 1 line_1: ! !end of general form text general_form_address: lname: MACCHETTO fname: DUCCIO category: PI inst: SPACE TELESCOPE SCIENCE INSTITUTE ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: Q2204-409 descr_1: HIGH Z QSO pos_1: RA = 22H 07M 34.4S +/- 1", pos_2: DEC = -40D 36' 55.3" +/- 1" equinox: 2000 rv_or_z: Z = 3.17 fluxnum_1: 1 fluxval_2: V = 17.6 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: Q2204-409 config: FOC/96 opmode: ACQ aperture: 512X1024 sp_element: F430W num_exp: 1 time_per_exp: 600S s_to_n: 5 priority: 1 param_1: PIXEL=50X25 req_1: CYCLE 0; req_2: INT ACQ FOR 2.0; req_3: CRIT OBS comment_1: ALL OBSERVATIONS ARE TO BE SCHEDULED comment_2: OUTSIDE SAA CONTOUR 5 ! linenum: 2.000 targname: Q2204-409 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: PRISM1 wavelength: 1150-6000 num_exp: 3 time_per_exp: 900S s_to_n: 5 fluxnum_1: 1 priority: 1 req_1: CYCLE 0 ! ! end of exposure logsheet ! No scan data records found