Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5783 Report Date: 18-Jul-95:17:58 Version: ********** Check-in Date: ********** 1.Proposal Title: ULTRAVIOLET IMAGERY OF VENUS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID SOLAR SYSTEM GO Sub Category INNER PLANETS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Larry Esposito U.COLORADO LASP USA ------------------------------------------------------------------------------------ 7. Abstract We intend to make an ultraviolet image of Venus as a companion observation to prop 4518 HIGH RESOLUTION SPECTROSCOPY OF VENUS. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 0.08 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ 12. Special sched req: Time Critical obs. ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5783 PI: Larry Esposito Proposal Title: ULTRAVIOLET IMAGERY OF VENUS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Pi Larry W Esposito U.COLORADO LASP USA Chan Y Na U.COLORADO LASP USA ------------------------------------------------------------------------------------ 2. Scientific Justification. Paper copy only. ------------------------------------------------------------------------------------ 3. Description of proposed observations. Image will be taken on gyros in the next orbit after the spectroscopy observations. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The observation of Venus in the middle UV is crucial. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. Venus is most safely observed near its maximum elongation, when it is furthest from the Sun. A short slew will allow pointing to Venus while HST is in the Earth's shadow. Venus is more than 43 degrees from the Sun from 31 May 1993 to 12 July 1993. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. None. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. none ------------------------------------------------------------------------------------ 8. Additional comments or special requests. None. ------------------------------------------------------------------------------------ 9. Description of previous HST work. None. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). none. ------------------------------------------------------------------------------------ 11. Address Information Name: Larry W Esposito Category: PI Institution: U.Colorado LASP Address: LASP Campus Box 392 City: Boulder State: CO Zip Code: 803090392 Country: USA Telephone: 303/492-7325 Telex (or e-mail): 910/940-3441 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5783 [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 3 VENUS+5D I,606 RA = 235.1777384D +/- 2000 0.00001D, DEC = -15.5724451D +/- 0.00001D Comments: FIXED POINTING AT ELONG 51.88 DEG FROM SUN ON 1/9 AND GETTING FARTHER... ------------------------------------------------------------------------------------------------------------------------------------ TARGET LIST b)Solar System Targets ID = 5783 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 | TARGET NAME: VENUS ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET VENUS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | STD = VENUS | TYPE = POS_ANGLE, | ANG = 0, | RAD = 5.9, | REF = SUN | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | VENUS ELONGATION | ------------------------------------------------------------------------------------------------------------------------------------ REF | DATA | COMMENTS | | 1 |F(2070) = 10 +/- 5 E-10 | SUN REFERENCE MORE DIRECT THAN | | CELESTIAL REFERENCE SUGGESTED BY | | STORRS. | ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5783 [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 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 VENUS+5D S/C DATA V1 1 1S CYCLE 4 / 1-4 PCS MODE f SEQ 1-4 NO GAP Comments: POINTING BEYOND 50 DEG SOLAR AVOIDANCE LIMIT. EACH LINE ITS OWN OBSET. ------------------------------------------------------------------------------------------------------------------------------------ 2 VENUS WFPC2 image wf2 f255w clocks=yes 1 2s 25 1 1 seq 2-3 non-int atd-gain=15 DARK TIME cr-split=no PCS MODE g Comments: use gyros ------------------------------------------------------------------------------------------------------------------------------------ 3 VENUS WFPC2 image wf2 f218w clocks=yes 1 20s 25 1 1 DARK TIME atd-gain=15 PCS MODE g cr-split=no Comments: use gyros ------------------------------------------------------------------------------------------------------------------------------------ 4 VENUS+5D S/C DATA V1 1 1S PCS MODE F Comments: POINTING BEYOND 50 DEG SOLAR AVOIDANCE LIMIT. EACH LINE ITS OWN OBSET. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5783 [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations S/C WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes DATA image ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters clocks=yes atd-gain=15 cr-split=no ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 0.08 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category SOLAR SYSTEM ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category INNER PLANETS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4 / 1-4; PCS MODE f; SEQ 1-4 NO GAP; seq 2-3 non-int; DARK TIME; PCS MODE g; PCS MODE F; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements f255w f218w ------------------------------------------------------------------------------------------------------------------------------------ Target Names VENUS+5D VENUS ------------------------------------------------------------------------------------------------------------------------------------