! File: 3886C.PROP ! Database: PEPDB ! Date: 19-FEB-1994:22:55:26 coverpage: title_1: ORBITAL PARAMETER OF KNOWN BINARY, SEQUEL sci_cat: STELLAR ASTROPHYSICS proposal_for: GTO/AST longterm: 3 cont_id: 3061 pi_fname: WILLIAM pi_mi: H. pi_lname: JEFFERYS pi_inst: TEXAS, UNIVERSITY OF pi_country: USA pi_phone: 512-471-4461 keywords_1: S-CURVE MEASUREMENT hours_pri: 15.00 num_pri: 15 time_crit: X pi_position: PROF OF ASTRONOMY ! end of coverpage abstract: line_1: We propose to use FGS in TRANSFER mode to observe the close line_2: known binary ADS11300. According to an orbital analysis line_3: incorporating recent HST-FGS results, this pair of 54 orbital line_4: period is expected to pass through periastron in 1992.1 +/- 0.6 line_5: and should reach a component separation of less than 10 mas. line_6: Measurement at this angular separation is not possible by any line_7: ground-based technique, and HST observation provides the only line_8: opportunity to obtain astrometric data at this critical orbital line_9: phase. ! ! end of abstract general_form_proposers: lname: JEFFERYS fname: WILLIAM mi: H. inst: TEXAS, UNIVERSITY OF country: USA ! lname: FRANZ fname: OTTO mi: G. inst: LOWELL OBSERVATORY country: USA ! lname: NELAN fname: EDMUND mi: P. inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: line_2: A) Acquire brightest available Guide Stars in FGS 1 and 2 line_3: in fine lock. line_4: 1) Perform transfer scans in FGS3 with the clear line_5: aperture at pickle center. line_6: 2) Repeat 1 with the 2/3 aperture. line_10: B) Go to next target and repeat A within 10 days. line_11: C) Repeat A and B every 3 months for a total of 6 iterations. ! question: 5 section: 1 line_1: The bright binary pair as been observed before using the line_2: PUPIL. We propose to add the F583W for an enhanced line_3: angular resolution. The reference star has been observed line_4: before. By continuing to re-observe it shortly before or line_5: after revisits to the binary star, any temporal changes line_6: (non-repeatability) due to HST-FGS will become known and line_7: can be removed during analysis. ! question: 7 section: 1 line_1: Initial data reduction and analysis will be carried out line_2: with the use of algorithms and software developed by STAT. line_3: Such reductions and analyses will require the use of data line_4: processing facilities both at STScI and at the home line_5: institutions of STAT members. ! question: 10 section: 1 line_1: Computer facilities at STAT members' institutions. ! !end of general form text general_form_address: lname: JEFFERYS fname: WILLIAM mi: H. category: PI inst: UNIVERSITY OF TEXAS addr_1: ASTRONOMY DEPARTMENT city: AUSTIN state: TX zip: 78712 country: USA phone: 512-471-3000 telex: TEXASTRO ! lname: NELAN fname: EDMUND mi: P. category: CON inst: UNIVERSITY OF TEXAS addr_1: STSCI addr_2: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301-338-7870 ! lname: FRANZ fname: OTTO mi: G. category: CON inst: LOWELL OBSERVATORY addr_1: MARS HILL ROAD addr_2: 1400 WEST city: FLAGSTAFF state: AZ zip: 86001 country: USA phone: 602-774-3358 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: SAO103656 name_2: ADS11300 descr_1: BINARY PAIR pos_1: RA=18H 20M 38.81S +/- 0.1S, pos_2: DEC=14D 56' 34.1" +/- 1" equinox: 1950 pm_or_par: Y pos_epoch_bj: B pos_epoch_yr: 1950.00 ra_pm_val: -0.000040 dec_pm_val: 0.0460 dec_pm_unct: 0.0030 plate_req: N plate_avail: N fluxnum_1: 1 fluxval_1: V=8.7 ! targnum: 2 name_1: UPGREN69 descr_1: REFERENCE STAR pos_1: RA=9.46625D +/- .0004D, pos_2: DEC=84.9632778D +/- .002D equinox: 1950 comment_1: THIS STAR IS FOR comment_2: REFERENCE TRANSFER SCANS fluxnum_1: 1 fluxval_1: V=9.58 +/- 0.05 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: TF1 targname: # config: FGS opmode: TRANS aperture: # sp_element: # num_exp: 1 time_per_exp: 300S fluxnum_1: 1 priority: 1 param_1: DATA-RATE = 32, param_2: STEP-SIZE=1.0, param_3: SCANS=10, param_4: ACQ-MODE=SEARCH, comment_1: FINE LOCK GUIDING ! linenum: 2.000 sequence_1: USE TF1 targname: SAO103656 aperture: 3 sp_element: F583W req_1: SEQ 2-3 NO GAP; req_2: POS TARG 0.0,0.0 ; req_3: SAME POS FOR 3 AS 2 ; req_4: REPEAT 2-5 EVERY 91D req_5: +/-45D FOR 6 MORE req_6: TIMES ; req_7: CYCLE 1; req_8: GROUP 2-5 WITHIN 5D; comment_1: FINE LOCK GUIDING comment_2: PLS SCHEDULE 1ST OBS AS comment_3: EARLY IN 92 AS POSSIBLE comment_4: (013 IF YOU CAN) ! linenum: 3.000 sequence_1: USE TF1 targname: ^ aperture: ^ sp_element: PUPIL req_1: CYCLE 1 comment_1: FINE LOCK GUIDING ! linenum: 4.000 sequence_1: USE TF1 targname: UPGREN69 aperture: 3 sp_element: F583W req_1: SEQ 4-5 NO GAP; req_2: POS TARG 0.0,0.0 ; req_3: SAME POS FOR 5 AS 4 ; req_4: CYCLE 1 comment_1: FINE LOCK GUIDING comment_2: PLS SCHEDULE 4-5 comment_3: WITHIN 0-5D OF 2-3 comment_4: ON EVERY SINGLE comment_5: REPEAT. ! linenum: 5.000 sequence_1: USE TF1 targname: ^ aperture: ^ sp_element: PUPIL req_1: CYCLE 1 comment_1: FINE LOCK GUIDING ! ! end of exposure logsheet ! No scan data records found