! $Id: 5742,v 11.1 1994/08/19 20:05:11 pepsa Exp $ coverpage: title_1: GLOBULAR CLUSTER CORES, WFPC GTO AUGMENTATION, title_2: CYCLE 4 sci_cat: STELLAR POPULATIONS proposal_for: AUG/WF2 cont_id: 4851 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: GLOBULAR CLUSTERS hours_pri: 13.76 num_pri: 5 pi_position: PROF. PLANETARY SCI. ! end of coverpage abstract: line_1: Stellar Populations Part III: Globular Cluster Cores. The cores line_2: of 2 globular clusters will be imaged in U to study core properties line_3: and search for collapsed cusps. The clusters are relatively nearby line_4: and span the range from very regular to very cusplike. ! ! 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: All observations of the four globular clusters will consist of line_2: F336W exposures, each split into two equal-length exposures to line_3: facilitate the removal of cosmic rays. line_4: line_5: For each of the four clusters, three 2200 second C-R split observa- line_6: tions will be taken at each of two slightly different pointings. line_7: The slightly different pointings will provide the data necessary to line_8: compensate for anticipated calibration problems with the data. line_9: For three of the four clusters (all except M15), one 800 second C-R line_10: split observation will be taken to safeguard against the possibility line_11: of an unusually bright star saturating the Planetary Camera. line_12: For each cluster, all useful data will be combined to improve the line_13: signal-to-noise ratio of the data. ! question: 4 section: 1 line_1: Many groundbased observations of galactic globular cluster cores line_2: have been taken during the past few decades. Atmospheric seeing has line_3: limited the resolution of the detailed nature of these cluster cores. line_4: By being outside the bulk of the Earth's atmosphere, the HST can line_5: produce observations that have finer resolution than is routinely line_6: obtainable at groundbased observatories. The scientific yield of line_7: this finer resolution has been demonstrated by the analysis of the line_8: SAO observations of the center of the glactic globular cluster M15 line_9: (see section 8a, 8b, and 8c of this proposal). ! ! question: 8 section: 1 line_1: All of the 2200s exposures given in the GC800 and GC2000 line_2: sequences may be adjusted by +/- 20 percent in order to line_3: fit within one orbit. However, the CR-split level must line_4: remain equal when adjusting times as needed. ! !end of general form text general_form_address: lname: O'NEIL fname: EARL mi: J. category: CON inst: NOAO/KPNO addr_1: 950 N. CHERRY addr_2: P.O. BOX 26732 city: TUCSON state: AZ zip: 85726 country: USA phone: (602) 327-5511 ! 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: 5 name_1: NGC7078-M15 descr_1: C, 201 pos_1: RA= 21H27M33.3S +/-0.1S, pos_2: DEC= +11D56'49" +/-1" equinox: 1950.0 comment_1: B-V=0.68 ALSO FOR FLUX DATA fluxnum_1: 1 fluxval_1: SURF(V) = 13.5 ! targnum: 6 name_1: NGC7078-OFF descr_1: C, 201 pos_1: RA= 21H27M33.3S +/-0.1S, pos_2: DEC= +11D56'39" +/-1" equinox: 1950.0 comment_1: B-V=0.68 ALSO FOR FLUX DATA fluxnum_1: 1 fluxval_1: SURF(V) = 13.5 ! targnum: 7 name_1: NGC6341-M92 descr_1: C, 201 pos_1: RA= 17H15M35.0S +/-0.1S, pos_2: DEC= +43D11'21" +/-1" equinox: 1950.0 comment_1: B-V=0.68 ALSO FOR FLUX DATA fluxnum_1: 1 fluxval_1: SURF(V) = 15.4 ! targnum: 8 name_1: NGC6341-OFF descr_1: C, 201 pos_1: RA= 17H15M35.0S +/-0.1S, pos_2: DEC= +43D11'11" +/-1" equinox: 1950.0 comment_1: B-V=0.68 ALSO FOR FLUX DATA fluxnum_1: 1 fluxval_1: SURF(V) = 15.4 ! targnum: 10 name_1: BD+28D4211 descr_1: A, 105 pos_1: RA = 21H 51M 11.07S +/- 1S, pos_2: DEC = +28D 51' 51.8" +/- 1", equinox: 2000 fluxnum_1: 1 fluxval_1: V = 10.51 comment_1: UV STANDARD; SP.TYPE = Op; comment_2: FOR USE WITH NGC 7078 OBS ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: GLOB1 targname: # config: WFPC2 opmode: IMAGE aperture: PC1 sp_element: F336W num_exp: 1 time_per_exp: 400S priority: 1 param_1: CR-SPLIT=0.5, param_2: CR-TOLERANCE=0.0, req_1: NON-INT / 1-2; req_2: GROUP 1-2 NO GAP; comment_1: GTO AUGMENTATION, CYCLE 4 comment_2: EJO/RML 5/24/94 linenum: 2.000 sequence_1: DEFINE sequence_2: GLOB1 targname: # config: WFPC2 opmode: IMAGE aperture: PC1 sp_element: F336W num_exp: 3 time_per_exp: 600S priority: 1 param_1: CR-SPLIT=NO req_1: SAME POS FOR 2 AS 1; ! linenum: 6.000 sequence_1: DEFINE sequence_2: GLOB2 targname: # config: WFPC2 opmode: IMAGE aperture: PC1 sp_element: F336W num_exp: 1 time_per_exp: 400S priority: 1 param_1: CR-SPLIT=0.5, param_2: CR-TOLERANCE=0.0, req_1: NON-INT / 6-7; req_2: GROUP 6-7 NO GAP; linenum: 7.000 sequence_1: DEFINE sequence_2: GLOB2 targname: # config: WFPC2 opmode: IMAGE aperture: PC1 sp_element: F336W num_exp: 4 time_per_exp: 600S priority: 1 param_1: CR-SPLIT=NO ! linenum: 21.000 sequence_1: USE sequence_2: GLOB2 targname: NGC7078-M15 req_1: CYCLE 4 / 21-25 ! linenum: 22.000 sequence_1: USE sequence_2: GLOB1 targname: NGC7078-OFF req_1: SAME ORIENT FOR 22 AS 21 ! linenum: 24.000 sequence_1: USE sequence_2: GLOB1 targname: NGC6341-M92 ! linenum: 25.000 sequence_1: USE sequence_2: GLOB1 targname: NGC6341-OFF req_1: SAME ORIENT FOR 25 AS 24 ! ! end of exposure logsheet ! No scan data records found