6930( 2) - 05/21/96 13:18 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6930 Version: 2 Check-in Date: 21-May-1996 13:15:32 1.Proposal Title: FOC Neutral Density Filter Calibrations ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle CAL/FOC 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: M. Voit STSCI CoI: W. Hack STSCI N ------------------------------------------------------------------------------------ 6. Abstract The principle objective is to monitor the determine throughputs of the neutral density filters, especially F4ND and F6ND. Observations of the core of NGC5139 will provide a wide-range of magnitudes and a large number of stars for the analysis, along with direct comparison with previous calibrations done at different wavelengths. Images of R136A are necessary in order to obtain high enough S/N observations in the UV, and also to check the higher ND filters (ie, F6ND, and F8ND). ------------------------------------------------------------------------------------ Observations Description ------------------------ Use blind pointing to acquire a field near the core of a globular cluster with the F470M filter. Subsequent observations in the visit will be taken with different ND combinations. The second visit to observe R136A will use blind pointing and the F253M filter. Different ND combinations will also be used on this target as well. Real Time Justification ----------------------- Calibration Justification ------------------------- The calibration of the FOC's absolute sensitivity and any photometric reductions of FOC observations taken with ND's require accurate calibrations of their throughputs. Furthermore, observations of bright targets require the use of ND filters, and accurate knowledge of the throughputs are necessary in order to insure the safety of the FOC during such observations. These calibrations will therefore measure the throughputs of the NDs at critical wavelengths, around 4700 and 2500 Angstroms . Additional Comments ------------------- ------------------------------------------------------------------------------------ 6930( 2) - 05/21/96 13:18 - [ 2] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: STSCI Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6930( 2) - 05/21/96 13:18 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5139 Calibration RA=13H 26M 45.9S +/- 0.01S, DEC= 2000 V = 15 -47D 28' 36.7" +/- 0.05", PLATE- ID=00AK 2 R136A Calibration RA=05H 38M 42.451S +/- 0.01S, 2000 V = 13 DEC=-69D 06' 2.805" +/- 0.05", PLATE-ID=06B0 6930( 2) - 05/21/96 13:18 - [ 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 NGC5139 FOC/96 IMAGE 512X512 F470M, 1 1100S F2ND ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC5139 FOC/96 IMAGE 512X512 F470M, 1 1100S F1ND ------------------------------------------------------------------------------------------------------------------------------------ 25 INTFLAT FOC/96 RESEAU 512X102 CLEAR PIXEL=50X25,LED=GREEN-2, 1 10M 4 LED-STEP=24 ------------------------------------------------------------------------------------------------------------------------------------ 26 DARK FOC/96 IMAGE 512X512 F470M 1 10M END ORBIT ------------------------------------------------------------------------------------------------------------------------------------ 30 NGC5139 FOC/96 IMAGE 512X512 F470M 1 600S ------------------------------------------------------------------------------------------------------------------------------------ 40 NGC5139 FOC/96 IMAGE 512X512 F470M, 1 1800S F4ND ------------------------------------------------------------------------------------------------------------------------------------ 45 INTFLAT FOC/96 RESEAU 512X102 CLEAR PIXEL=50X25,LED=GREEN-2, 1 10M 4 LED-STEP=24 ------------------------------------------------------------------------------------------------------------------------------------ 46 DARK FOC/96 IMAGE 512X512 F470M, 1 10M END ORBIT F6ND ------------------------------------------------------------------------------------------------------------------------------------ 50 NGC5139 FOC/96 IMAGE 512X512 F470M, 1 2400S F6ND ------------------------------------------------------------------------------------------------------------------------------------ 6930( 2) - 05/21/96 13:18 - [ 5] Visit: 02 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 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 300S F1ND ------------------------------------------------------------------------------------------------------------------------------------ 20 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 600S F1ND,F2ND ------------------------------------------------------------------------------------------------------------------------------------ 30 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 900S F1ND,F4ND ------------------------------------------------------------------------------------------------------------------------------------ 35 INTFLAT FOC/96 RESEAU 512X102 CLEAR PIXEL=50X25,LED=GREEN-2, 1 10M 4 LED-STEP=24 ------------------------------------------------------------------------------------------------------------------------------------ 36 DARK FOC/96 IMAGE 512X512 F253M, 1 10M END ORBIT F1ND,F6ND ------------------------------------------------------------------------------------------------------------------------------------ 40 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 900S F1ND,F6ND ------------------------------------------------------------------------------------------------------------------------------------ 50 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 600S F2ND ------------------------------------------------------------------------------------------------------------------------------------ 60 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 900S F4ND ------------------------------------------------------------------------------------------------------------------------------------ 65 INTFLAT FOC/96 RESEAU 512X102 CLEAR PIXEL=50X25,LED=GREEN-2, 1 10M 4 LED-STEP=24 ------------------------------------------------------------------------------------------------------------------------------------ 66 DARK FOC/96 IMAGE 512X512 F253M, 1 10M END ORBIT F6ND ------------------------------------------------------------------------------------------------------------------------------------ 70 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 900S F6ND ------------------------------------------------------------------------------------------------------------------------------------ 80 R136A FOC/96 IMAGE 512X512 F253M, CHECK-FILTER=YES 1 1800S F8ND ------------------------------------------------------------------------------------------------------------------------------------ 6930( 2) - 05/21/96 13:18 - [ 6] Summary Form for Proposal 6930 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE RESEAU ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters PIXEL=50X25 LED=GREEN-2 LED-STEP=24 CHECK-FILTER=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category CAL/FOC ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements END ORBIT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F470M,F2ND F470M,F1ND CLEAR F470M F470M,F4ND F470M,F6ND F253M,F1ND F253M,F1ND,F2ND F253M,F1ND,F4ND F253M,F1ND,F6ND F253M,F2ND F253M,F4ND F253M,F6ND F253M,F8ND ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC5139 INTFLAT DARK R136A ------------------------------------------------------------------------------------------------------------------------------------