6321( 6) - 08/03/95 20:36 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6321 Version: 6 Check-in Date: ********** 1.Proposal Title: A UV bright knot in the core of Eta Carinae ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle Hot Stars GTO/HRS 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dennis Ebbets Ball Aerospace and Communications Group CoI: Kris Davidson University of Minnesota N ------------------------------------------------------------------------------------ 6. Abstract The ultraviolet spectra of two objects in the complex core of Eta Carinae are observed with grating mode G140L of the Goddard High Resolution Spectrograph. One object is the brightest point, presumably the central star. The second is a knot 0.33 arc seconds to the northeast, which is the second brightest region in uv light, and appears to be aligned with the "jet" of material which extends towards the NN and NS Condensations. The spectra are made with the targets in the GHRS Small Science Aperture (0.22 arc sec), and cover the wavelength range 1210A - 1760A. ------------------------------------------------------------------------------------ Observations Description ------------------------ Lines 10 - 30 define a standard GHRS onboard target acquisition, with an RTB search, double locate, and image mode map of the Large Science Aperture. Lines 40 and 50 peakup and image the brightest point in the Small Science Aperture. Lines 100 and 110 obtain spectra of the source with G140L, using the simplest substep pattern (#2) and a standard fp-split strategy. When concatenated the data from these two lines will cover the spectral range 1210A < lambda < 1760A. Line 200 offsets from the brightest point to the uv knot to the northeast and makes an image through the SSA without attempting a separate peakup. Lines 210 and 220 obtain the same spectrum exposures on the knot as were made for the core on lines 100 and 110. Real Time Justification ----------------------- No real-time resources are requested. Calibration Justification ------------------------- No special calibrations are requested. Additional Comments ------------------- ------------------------------------------------------------------------------------ 6321( 6) - 08/03/95 20:36 - [ 2] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: GHRS IDT at Goddard Space Flight Center Ship Via: GHRS team will Email: hrsake@hrs.gsfc.nasa.gov , ------------------------------------------------------------------------------------ 6321( 6) - 08/03/95 20:36 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD93308 STAR, Eta Carinae Star RA=10H 45M 03.615S +/- 0.1S, 2000 V=7.6 DEC=-59D 41' 03.96" +/- 0.5", F-CONT(1350)=9E-12 PLATE-ID=ZZZQ F-CONT(1620)=7E-12 Comments: Brightest point source in core of eta carinae 2 NEKNOT STAR, Eta Carinae Star R=0.33", PA=22D, FROM 1, PLATE- 2000 F-CONT(1350)=4E-12 ID=ZZZQ F-CONT(1620)=3E-12 Comments: UV bright knot north east of core of eta carinae 6321( 6) - 08/03/95 20:36 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 HD93308 HRS ACQ 2.0 MIRROR-N1 SEARCH-SIZE=5, 1 5S ONBOARD ACQ FOR 20 BRIGHT=RETURN Comments: STEP-TIME=0.2S ------------------------------------------------------------------------------------------------------------------------------------ 20 HD93308 HRS ACQ/PEA 2.0 MIRROR-N1 1 20.4S ONBOARD ACQ FOR 30-40 KUP Comments: STEP-TIME=0.2S ------------------------------------------------------------------------------------------------------------------------------------ 30 HD93308 HRS IMAGE 2.0 MIRROR-N1 NX=22, NY=22, 1 484S DELTA-X=2, DELTA-Y=2 Comments: STEP-TIME=1.0S ------------------------------------------------------------------------------------------------------------------------------------ 40 HD93308 HRS ACQ/PEA 0.25 MIRROR-N1 SEARCH-SIZE=5 1 12.5S ONBOARD ACQ FOR 50-220 KUP Comments: STEP-TIME=0.5S ------------------------------------------------------------------------------------------------------------------------------------ 50 HD93308 HRS IMAGE 0.25 MIRROR-N1 NX=16, NY=16, 1 256S DELTA-X=2, DELTA-Y=2 Comments: STEP-TIME=1.0S ------------------------------------------------------------------------------------------------------------------------------------ 100 HD93308 HRS ACCUM 0.25 G140L 1350.0 STEP-PATT=2, FP 1 1203.2S -SPLIT=STD Comments: STEP-TIME=0.2S, 5m per subexp ------------------------------------------------------------------------------------------------------------------------------------ 110 HD93308 HRS ACCUM 0.25 G140L 1620.0 STEP-PATT=2, FP 1 1203.2S -SPLIT=STD Comments: STEP-TIME=0.2S, 5m per subexp ------------------------------------------------------------------------------------------------------------------------------------ 200 NEKNOT HRS IMAGE 0.25 MIRROR-N1 NX=16, NY=16, 1 256S DELTA-X=2, DELTA-Y=2 Comments: STEP-TIME=1.0S ------------------------------------------------------------------------------------------------------------------------------------ 210 NEKNOT HRS ACCUM 0.25 G140L 1350.0 STEP-PATT=2, FP 1 1792S -SPLIT=STD Comments: STEP-TIME=0.2S, 5m per subexp ------------------------------------------------------------------------------------------------------------------------------------ 220 NEKNOT HRS ACCUM 0.25 G140L 1620.0 STEP-PATT=2, FP 1 1792S -SPLIT=STD Comments: STEP-TIME=0.2S, 5m per subexp ------------------------------------------------------------------------------------------------------------------------------------ 6321( 6) - 08/03/95 20:36 - [ 5] Summary Form for Proposal 6321 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP IMAGE ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE=5 BRIGHT=RETURN DELTA-Y=2 DELTA-X=2 FP-SPLIT=STD STEP-PATT=2 NY=16 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category Hot Stars ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 20 ONBOARD ACQ FOR 30-40 ONBOARD ACQ FOR 50-220 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-N1 G140L ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD93308 NEKNOT ------------------------------------------------------------------------------------------------------------------------------------