6257( 6) - 12/07/95 10:39 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6257 Version: 6 Check-in Date: ********** 1.Proposal Title: Deep Photometry of the Globular Cluster M92 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle Stellar Populations GTO/OS 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Ivan R. King University of California, Berkeley CoI: Adrienne M. Cool University of California, Berkeley N CoI: Craig Sosin University of California, Berkeley N CoI: Jay Anderson University of California, Berkeley N CoI: Giampaolo Piotto University of Padua N ------------------------------------------------------------------------------------ 6. Abstract A faint color-magnitude diagram and luminosity function will be determined for the globular cluster M92 (NGC 6341). The FOC will observe fields in B and V, at the center and 20'' out, while WFPC2 observes (on the same field at all times) in V and I. The WFPC2 field will reach at least to V = 26. ------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 2] Observations Description ------------------------ The program takes 8 orbits; each observation is repeated in 2 successive orbits. The primary exposures are FOC, on a field at the center and one 20'' out. On each field we take 2 orbits with F430W and 2 with F480LP; these are well matched for lower-MS stars. The WFPC2 exposures are all parallel, and for the second FOC field HST is rotated so that WFPC2 again observes the same field; the WFPC2 time is about equally divided between F606W and F814W. The FOC takes full-orbit exposures, while the WFPC2 exposures are divided into 2 per orbit, with some shorter exposures thrown in, to deal with stars that saturate in the longer exposures. Note also the request that the parallels be lengthened by hand if the primaries are expanded (since RPS2 will not accept EXPAND on parallels). Real Time Justification ----------------------- N. A. Calibration Justification ------------------------- N. A. Additional Comments ------------------- All primary exposures have parallels (which are actually more important than the primaries). The displacement between the 2 FOC fields is done with a POS TARG, so as to allow the orientation change to be independent of the initial orientation. Since the visibility duration varies, it would be highly advantageous if this program could be scheduled during a period of long visibility. ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: Robert Jedrzejewski*STSCI Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6341 STELLAR CLUSTER, RA=17H 17M 07.3S +/- 0.1S, 2000.0 V=6.5 GLOBULAR CLUSTER DEC=43D 08' 11" +/- 1" B-V=0.62 Comments: APPARENT DISTANCE MODULUS 14.4 2 NGC6341-OFF STELLAR CLUSTER, RA=17H 17M 07.3S, DEC=43D 08' 2000.0 V=6.5 GLOBULAR CLUSTER 11", REGION, R=4.5' B-V=0.62 Comments: PARALLEL FIELD FOR TARGET 1 6257( 6) - 12/07/95 10:39 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC6341 FOC/96 IMAGE 512X512 F430W 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR-SPLIT=NO ATD 1 20S PAR WITH 11 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR- 1 2000S EXPAND MIN DUR 2000S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 11 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC6341 FOC/96 IMAGE 512X512 F430W 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 11 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR-SPLIT=NO ATD 2 100S PAR WITH 21 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 21 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 31 NGC6341 FOC/96 IMAGE 512X512 F480LP 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 11 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. ------------------------------------------------------------------------------------------------------------------------------------ 32 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR-SPLIT=NO ATD 1 20S PAR WITH 31 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 33 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 31 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 41 NGC6341 FOC/96 IMAGE 512X512 F480LP 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 11 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. ------------------------------------------------------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 42 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR-SPLIT=NO ATD 2 100S PAR WITH 41 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 43 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 41 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 6] Visit: 02 Visit Requirements: ORIENT -4.09D TO -4.10D FROM 1 On Hold Comments: Additional Comments: This visit displaces primary target with a POS TARG. ORIENT requirement should then place WFPC2 in same place for Visit 2 as for Visit 1. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 51 NGC6341 FOC/96 IMAGE 512X512 F430W 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S POS TARG 0.7,20.0 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. ------------------------------------------------------------------------------------------------------------------------------------ 52 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR-SPLIT=NO ATD 1 20S PAR WITH 51 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 53 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR- 1 2000S EXPAND MIN DUR 2000S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 51 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 61 NGC6341 FOC/96 IMAGE 512X512 F430W 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 51 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. Do at SAME POS AS 51 which equals POS TARG position 0.7,20.0. ------------------------------------------------------------------------------------------------------------------------------------ 62 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR-SPLIT=NO ATD 2 100S PAR WITH 61 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 63 NGC6341-OFF WFPC2 IMAGE WFALL F814W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 61 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 71 NGC6341 FOC/96 IMAGE 512X512 F480LP 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 51 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. Do at SAME POS AS 51 which equals POS TARG position 0.7,20.0. ------------------------------------------------------------------------------------------------------------------------------------ 72 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR-SPLIT=NO ATD 1 20S PAR WITH 71 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 73 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 71 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 81 NGC6341 FOC/96 IMAGE 512X512 F480LP 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 51 END ORBIT Comments: Please expand WFPC2 parallels to match expanded FOC primes. Do at SAME POS AS 51 which equals POS TARG position 0.7,20.0. ------------------------------------------------------------------------------------------------------------------------------------ 82 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR-SPLIT=NO ATD 2 100S PAR WITH 81 -GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ 83 NGC6341-OFF WFPC2 IMAGE WFALL F606W CR- 1 2300S EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT TOLERANCE=0.025 END ORBIT PAR WITH 81 ATD-GAIN=7 Comments: Please expand by hand to match expanded FOC prime exposures. ------------------------------------------------------------------------------------------------------------------------------------ 6257( 6) - 12/07/95 10:39 - [ 8] Summary Form for Proposal 6257 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ATD-GAIN=7 CR-TOLERANCE=0.025 ATD-GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GTO/OS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category Stellar Populations ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements EXPAND MIN DUR 2300S MAX DUR 4000S END ORBIT PAR WITH 11 EXPAND MIN DUR 2000S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 11 EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 11 END ORBIT PAR WITH 21 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 21 PAR WITH 31 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 31 PAR WITH 41 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 41 ORIENT -4.09D TO -4.10D FROM 1 EXPAND MIN DUR 2300S MAX DUR 4000S POS TARG 0.7,20.0 END ORBIT PAR WITH 51 EXPAND MIN DUR 2000S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 51 EXPAND MIN DUR 2300S MAX DUR 4000S SAME POS AS 51 END ORBIT PAR WITH 61 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 61 PAR WITH 71 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 71 PAR WITH 81 EXPAND MIN DUR 2300S MAX DUR 4000S NO SPLIT END ORBIT PAR WITH 81 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F430W F606W F480LP F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC6341 NGC6341-OFF ------------------------------------------------------------------------------------------------------------------------------------