Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 3068c Report Date: 09-May-96:17:53 Version: ********** Check-in Date: ********** 1.Proposal Title: IMAGING OF THE GRAVITATIONAL LENS 2237+0305 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN SAT/WFC Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. John N. Bahcall INSTITUTE FOR ADVANCED STUDY USA (609) 734-8054 DR. JOHN N. BAHCALL ------------------------------------------------------------------------------------ 7. Abstract WFC images of the gravitational lens 2237+0305 will be taken in the F702W and F336W filters. ------------------------------------------------------------------------------------ 8. Scientific Key Words: QUASAR, SPECTROSCOPY, GALAXY, GRAVITATIONAL LENS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 1.65 par: 0 10. Num targs pri: 11 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 3068c PI: Dr. John N. Bahcall Proposal Title: IMAGING OF THE GRAVITATIONAL LENS 2237+0305 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ John N. Bahcall INSTITUTE FOR ADVANCED STUDY USA Donald P. Schneider INSTITUTE FOR ADVANCED STUDY USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. We will take WFC images of the gravitational lens 2237+0305. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. HST observations will provide sufficient spatial resolution to cleanly separate the four images of the lensed quasar. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The exposures should be taken consecutively. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. Exposures should be centered on one CCD. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. Data reduction and analysis will be performed at the IAS. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. Extensive ground observations exists. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Full computing support will be supplied by IAS. ------------------------------------------------------------------------------------ 13. WF/PC images will be obtained of the lensing galaxy, 2237+0305, in order to locate accurately the quasar position and to measure the surface brightness of the inner region of the galaxy. ------------------------------------------------------------------------------------ 11. Address Information Name: JOHN N. BAHCALL Category: PI Institution: INSTITUTE FOR ADVANCED STUDY Address: City: State: Zip Code: Country: Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 3068c [ 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 2237+0305 GRAVITATIONAL LENS RA = 22H 40M 30.3S +/- 0.1S, 2000 Z=1.695 1 V = 16.1 +/- 0.2 CANDIDATE BEHIND Z=0.04 DEC = +03D 21' 31" +/- 1.0" SPIRAL GALAXY ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3068c [ 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 2237+0305 WFC IMAGE W1 F336W PRE-FLASH=YES 1 150S 1 CYCLE 0 / 1-5 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ 2 2237+0305 WFC IMAGE W1 F336W PRE-FLASH=YES 1 750S 1 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ 3 2237+0305 WFC IMAGE W1 F702W PRE-FLASH=YES 1 30S 1 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ 4 2237+0305 WFC IMAGE W1 F702W PRE-FLASH=YES 1 300S 1 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ 5 2237+0305 WFC IMAGE W1 F702W PRE-FLASH=NO 1 2100S 1 1 NON-INT / 1-5 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 3068c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters PRE-FLASH=YES CR-SPLIT=NO PRE-FLASH=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal for SAT/WFC ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 1.65 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 0 / 1-5 NON-INT / 1-5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W F702W ------------------------------------------------------------------------------------------------------------------------------------ Target Names 2237+0305 ------------------------------------------------------------------------------------------------------------------------------------