Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1264c Report Date: 09-May-96:16:23 Version: ********** Check-in Date: ********** 1.Proposal Title: POLARIMETRY OF WISPS NEAR THE CRAB PULSAR ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID INTERSTELLAR MEDIUM GTO/FOC Sub Category SN & SNR ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Michael J. Disney UNIVERSITY COLLEGE, CARDIFF UNITED KIN 0222-874289 PROFESSOR ------------------------------------------------------------------------------------ 7. Abstract We propose to observe the polarization in the Crab Nebula close to the pulsar in the U band. Our 3x1 hour observations will yield results accurate to 2.5%, and 5 degrees in a resolution element of 0.06". This will complement longer wavelength studies that can be better made with the WFC. It enables us to begin a longer term investigation of the motions reported in the wisps. Since we shall see 3727 filaments in U we propose a 1 hour 3727 exposure to subtract off the line contribution. ------------------------------------------------------------------------------------ 8. Scientific Key Words: POLARIMETRY, SUPERNOVA, PULSAR, CRAB NEBULA, PROPER MOTION ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 6.00 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1264c PI: Michael J. Disney Proposal Title: POLARIMETRY OF WISPS NEAR THE CRAB PULSAR ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Ian S. Mclean ROYAL OBSERVATORY, EDINBURGH UNITED KING X Michael J. Disney UNIVERSITY COLLEGE, CARDIFF UNITED KING X ------------------------------------------------------------------------------------ 3. Description of proposed observations. Do exposures 1 to 3 in cycle 2 Remainder in cycles 3 to 5 It is important that all 7 exposures cover the same field. ------------------------------------------------------------------------------------ 12. This is an FOC IDT program. The one we are using to check out our polarimetry capability. ------------------------------------------------------------------------------------ 13. We are proposing U band polarmetry in the Crab Nebula near the pulsar with the FOC. In 4 hours at F/96 we expect to get polarization in a resolution element of 0.06" acurate to 2.5% and 5 degrees. Also starting study of Wisp movements. ------------------------------------------------------------------------------------ 11. Address Information Name: MICHAEL J. DISNEY Category: PI Institution: UNIVERSITY COLLEGE Address: DEPARTMENT OF ASTRONOMY P.O. BOX 78 CF1 1XL City: CARDIFF State: Zip Code: Country: UNITED KINGDOM Telephone: 0222-874289 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1264c [ 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 CRAB-NEBULA SUPERNOVA REMNANT RA = 05H 34M 32.153S +/- 2000 1 SURF(V)=19.0 M1 0.1S, 2 SURF(U)=20.0 DEC = +22D 00' 51.81" +/- 0.1" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1264c [ 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 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 19.5M 2 1 SAME ORIENT FOR 2- POL0 3 AS 1 SEQ 1-3 NO GAP CYCLE 9 / 1-7 GUID TOL 0.02" / 1 -7 ------------------------------------------------------------------------------------------------------------------------------------ 2 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 19.5M 2 1 POL60 ------------------------------------------------------------------------------------------------------------------------------------ 3 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 19.5M 2 1 POL120 ------------------------------------------------------------------------------------------------------------------------------------ 4 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 34.5M 2 2 SAME ORIENT FOR 4- POL0 6 AS 1 SEQ 4-6 NO GAP Comments: THE ACTUAL ROLL ANGLE DOES NOT MATTER. BUT IT MUST BE THE SAME AS USED FOR THE INITIAL EXPOSURES IN CYCLE 0. (SO THAT THE FRAMES CAN BE LAID ON TOP OF EACH OTHER). ------------------------------------------------------------------------------------------------------------------------------------ 5 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 34.5M 2 2 POL60 ------------------------------------------------------------------------------------------------------------------------------------ 6 CRAB-NEBULA FOC/96 IMAGE 512X512 F342W, 1 34.5M 2 2 POL120 ------------------------------------------------------------------------------------------------------------------------------------ 7 CRAB-NEBULA FOC/96 IMAGE 512X512 F372M 1 29.5M 33 2 2 Comments: THE ORIENTATION (ROLL ANGLE) FOR EXPOSURES 4-6 MUST BE THE SAME AS FOR 1-3 OR ROTATED BY AN INTEGER NUMBER OF 90 DEGREES. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1264c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/FOC ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 6.00 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category INTERSTELLAR MEDIUM ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category SN & SNR ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SAME ORIENT FOR 2-3 AS 1; SEQ 1-3 NO GAP; CYCLE 9 / 1-7; GUID TOL 0.02" / 1-7; SAME ORIENT FOR 4-6 AS 1; SEQ 4-6 NO GAP; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F342W, POL0 F342W, POL60 F342W, POL120 F372M ------------------------------------------------------------------------------------------------------------------------------------ Target Names CRAB-NEBULA M1 ------------------------------------------------------------------------------------------------------------------------------------