Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1281c Report Date: 09-May-96:16:25 Version: ********** Check-in Date: ********** 1.Proposal Title: THE FAINT POPULATION IN BAADE'S WINDOW - CYCLE 1 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR POPULATIONS GTO/OS Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Ivan R. King UC, BERKELEY USA (510) 642-2206 ------------------------------------------------------------------------------------ 7. Abstract With 1500 sec in each of U, B, and V, at f/96, we will easily reach the main- sequence turnoff in the central bulge of the Milky Way, taking advantage of the low absorption in Baade's Window. FOC resolving power is adequate to separate stars down to the limited magnitude of ST. A by-product of another program will be a pair of V and I parallel WFC exposures, overlapping the same field. ------------------------------------------------------------------------------------ 8. Scientific Key Words: BULGE -- STELLAR POPULATION -- LUMINOSITY FUNCTION ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 1.25 par: 0 10. Num targs pri: 2 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1281c PI: Ivan R. King Proposal Title: THE FAINT POPULATION IN BAADE'S WINDOW - CYCLE 1 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Ivan R. King UC, BERKELEY USA J. M. Deharveng MARSEILLE OBSERVATORY FRANCE X ------------------------------------------------------------------------------------ 3. Description of proposed observations. on Baade's Window on NGC 6522 (parallel) 1. f/96, F480LP, 1500 s PC, F785LP 2. f/96, F430W, 1500 s PC, F555W 3. f/96, F342W, 1500 s (the above equal in duration) All exposures in Cycle 1. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Resolving power is of the essence. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. To be done on UC Berkeley Astronomy VAX. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. roll angle specified ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). VAX, S/W, offices, postdoc, RA's ------------------------------------------------------------------------------------ 13. Color-magnitude arrays will be determined in Baade's window, in UBV. Parallel exposures with the PC will study density distribution and color-magnitude array at the center of the globular cluster NGC 6522. One-orbital-night exposures will reach to about 26th magnitude. ------------------------------------------------------------------------------------ 11. Address Information Name: IVAN R. KING Category: PI Institution: UNIVERSITY OF CALIFORNIA Address: ASTRONOMY DEPARTMENT City: BERKELEY State: CA Zip Code: 94720 Country: USA Telephone: (510)642-2206 Telex (or e-mail): (910)366-7114 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1281c [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial |Acqui|FLX| Flux data No | Name | Description | Position |Eqnx | Vel. |Prblm|REF| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 BAADES- GALACTIC FIELD RA = 18H 00M 01.0S +/- 0.1S, 1950 WINDOW-FIELD DEC = -29D 56' 51" +/- 1" ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6522 GLOBULAR CLUSTER RA=18H0M21.7S+/-0.1S, 1950 DEC=-30D02'11"+/-1" Comments: LINE 2 IS A PARALLEL FIELD. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1281c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 BAADES- FOC/96 IMAGE 512X512 F342W 1 1800S 1 SEQ 1-3 NO GAP WINDOW- ORIENT 80.0D +/- FIELD 0.05D CYCLE 1/1-6 ------------------------------------------------------------------------------------------------------------------------------------ 2 BAADES- FOC/96 IMAGE 512X512 F430W 1 1800S 1 SAME ORIENT FOR 2 WINDOW- AS 1 FIELD SAME POS FOR 2 AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 BAADES- FOC/96 IMAGE 512X512 F480LP 1 1800S 1 SAME ORIENT FOR 3 WINDOW- AS 1 FIELD SAME POS FOR 3 AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6522 PC IMAGE ALL F555W CR-SPLIT=NO 1 1800S 1 PAR PRE-FLASH=YES Comments: IF PARALLEL EXTENDS BEYOND PRIMARY EXPOSURE, TRUNCATE PARALLEL RATHER THAN LENGTHEN PRIMARY. INTENDED TO BE PARALLEL WITH 1. ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6522 PC IMAGE ALL F785LP CR-SPLIT=NO 1 1800S 1 PAR PRE-FLASH=YES Comments: IF PARALLEL EXTENDS BEYOND PRIMARY EXPOSURE, TRUNCATE PARALLEL RATHER THAN LENGTHEN PRIMARY. INTENDED TO BE PARALLEL WITH 2. ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6522 PC IMAGE ALL F785LP CR-SPLIT=NO 1 1800S 10 1 PAR PRE-FLASH=YES Comments: IF PARALLEL EXTENDS BEYOND PRIMARY EXPOSURE, TRUNCATE PARALLEL RATHER THAN LENGTHEN PRIMARY. INTENDED TO BE PARALLEL WITH 3. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1281c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 PC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO PRE-FLASH=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/OS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 1.25 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR POPULATIONS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 1-3 NO GAP; ORIENT 80.0D +/- 0.05D; CYCLE 1/1-6 SAME ORIENT FOR 2 AS 1; SAME POS FOR 2 AS 1 SAME ORIENT FOR 3 AS 1; SAME POS FOR 3 AS 1 PAR; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F342W F430W F480LP F555W F785LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names BAADES-WINDOW-FIELD NGC6522 ------------------------------------------------------------------------------------------------------------------------------------