Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1518c Report Date: 09-May-96:16:46 Version: ********** Check-in Date: ********** 1.Proposal Title: FOC UBV PHOTOMETRIC CALIBRATION ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID SV/FOC Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. Philippe Crane EUROPEAN SOUTHERN OBSERVATOR WEST GERMA ------------------------------------------------------------------------------------ 7. Abstract This test will provide the data necessary to do photometry with the FOC to the ~5% level of accuracy. This will be limited to UBV in f/96, UB in f/48 and will include the F275W Filter in f/96 and f/48. The calibration of the UV (F275W) filter will not be done to the same level of precision as the other filters. F/288 will be tested only in relation to f/96. It is, nevertheless, one of the most important calibrations. It is a basic requirement for a successful imaging device to be able to yield accurate magnitudes on a universally-accepted system. These observations will be analyzed using photometry software packages. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 0 par: 0 10. Num targs pri: 0 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1518c PI: Dr. Philippe Crane Proposal Title: FOC UBV PHOTOMETRIC CALIBRATION ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dr. J. C. Blades SPACE TELESCOPE SCIENCE USA INSTITUTE Philippe Crane EUROPEAN SOUTHERN OBSERVATORY WEST GERMAN ------------------------------------------------------------------------------------ 3. Description of proposed observations. In order to do photometry with the FOC, it is necessary to calibrate the filters against standard stars with known magnitudes in the standard filter systems available on the FOC. Also, the FOC calibration should not be the limiting factor for typical observations. Therefore, a precision of 5% should be the target for these calibrations. f/96 has U, B, and V type filters available and all three will be calibrated. An additional UV filter will also be used (F275W). f/48 has only the U and B filters to be calibrated as well as the F275W filter. f/288 will undoubtedly have chromatic aberrations and will probably not be used with filters longward of 3500A or for much photometry of this sort. Since this is the case, it is proposed to drop this calibration except to make a quick check with the UV filter. We need a field with both blue and red stars. We assume two pointings are needed to get the appropriate range of color to determine the color coefficients. These two pointings are given in the exposure log sheet. For f/48, we assume that we have twice as many stars and hence we can arrive at the same level of precision in roughly half the time. It is assumed that the calibration fields will provide the following: red field >= 4 objects of f/96 11 x 11 arcsec field with V ~= 22, B-V ~= 1.0 >= 9 objects at f/48 blue field >= 4 objects at f/96 with V~=22, B-V ~= 0.0 >= 9 objects at f/48 The filters needed are F96 U, B, V and F275W F48 U, B F288 F275W. These observations require the FOC linearity test to have been done previously and to show that the counting rates are in the linear range All observations are in the SV delta plan. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. Prerequisities: this test must be done towards the end of the SV period when the preformance of the FOC is understood; FOC-03 (1507-FOC Optical Focus), FOC-04 (1508-FOC Point Source Linearity), FOC-06 (1511-FOC Absolute Sensitivity f/96 Relay). ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. This test is stray light sensitive with an allowable background of 21 m(v)/arcsec(2). ------------------------------------------------------------------------------------ 11. Address Information Name: J. C. BLADES Category: Institution: SPACE TELESCOPE SCIENCE INSTITUTE Address: 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: 301-338-4805 Telex (or e-mail): 684-9101-STSCI ------------------------------------------------------------------------------------ Page 3 Name: PHILIPPE CRANE Category: PI Institution: EUROPEAN SOUTHERN OBSERVATORY Address: KARL-SCHWARZSCHILD-STRASSE 2 City: D-8046 GARCHING State: Zip Code: Country: WEST GERMANY Telephone: (49-89)32006-230 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1518c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 NGC104-R 47 TUC RA=00H 20M 20.91S +/- 0.1S, 2000 1 B=22 +/- 3 DEC=-72D 04' 53.9" +/- 1", PLATE-ID=0024 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-B 47 TUC RA=00H 20M 20.68S +/- 0.1S, 2000 1 B= 22 +/- 3 DEC=-72D 04' 58.2" +/- 1", PLATE-ID=0024 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1518c [ 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 DEFINE # FOC/96 IMAGE 512X512 F342W 6 15M 100 1 # COND IF SV DELTA PHOTO PLAN ------------------------------------------------------------------------------------------------------------------------------------ 2 ^ ^ ^ ^ ^ F430W 3 ^ ^ ^ COND IF SV DELTA PLAN ------------------------------------------------------------------------------------------------------------------------------------ 3 ^ ^ ^ ^ ^ F480LP ^ ^ ^ ^ COND IF SV DELTA PLAN ------------------------------------------------------------------------------------------------------------------------------------ 4 ^ ^ ^ ^ ^ F275W ^ ^ ^ ^ COND IF SV DELTA PLAN ------------------------------------------------------------------------------------------------------------------------------------ 5 USE NGC104-R 1 GROUP 5-6.1 WITHIN PHOTO 48H ------------------------------------------------------------------------------------------------------------------------------------ 5.1 USE NGC104-B 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 6 USE NGC104-R 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 6.1 USE NGC104-B 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 7 USE NGC104-R 1 GROUP 7-8.1 WITHIN PHOTO 48H ------------------------------------------------------------------------------------------------------------------------------------ 7.1 USE NGC104-B 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 8 USE NGC104-R 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 8.1 USE NGC104-B 1 PHOTO ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC104-R FOC/ IMAGE 512X512 F275W 6 15M 25 1 1 GROUP 9-10 WITHIN 288 9H ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC104-B FOC/ ^ ^ F275W 6 15M 25 1 1 288 ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC104-R FOC/48 IMAGE 512X512 F342W 6 15M 1 1 GROUP 11-13 WITHIN 12H ------------------------------------------------------------------------------------------------------------------------------------ 12 ^ ^ ^ ^ F430W 3 ^ 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 13 ^ ^ ^ ^ F275W ^ ^ 1 1 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1518c [ 6] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC104-B ^ ^ ^ F342W 6 ^ 1 1 COND ON 11-13 IF FOV DOES NOT CONTAIN BLUE STARS GROUP 14-16 WITHIN 12H ------------------------------------------------------------------------------------------------------------------------------------ 15 ^ ^ ^ ^ F430W 3 ^ 1 1 ^ ------------------------------------------------------------------------------------------------------------------------------------ 16 ^ ^ ^ ^ F275W ^ ^ 1 1 ^ Comments: LINES 14-16 WILL BE REQUIRED IF THE FOC/48 FOV FOR EXP 11-13 DOES NOT CONTAIN BOTH RED AND BLUE TARGETS. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1518c [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 ^ FOC/288 FOC/48 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Proposal for SV/FOC ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements COND IF SV DELTA PLAN; GROUP 5-6.1 WITHIN 48H; GROUP 7-8.1 WITHIN 48H; GROUP 9-10 WITHIN 9H; GROUP 11-13 WITHIN 12H; COND ON 11-13 IF FOV DOES NOT CONTAIN BLUE STARS; GROUP 14-16 WITHIN 12H; ^ ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F342W F430W F480LP F275W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC104-R NGC104-B ------------------------------------------------------------------------------------------------------------------------------------