WIDE FIELD CAMERA 3 HOME PAGE: wfc3.gsfc.nasa.gov

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1 WIDE FIELD CAMERA 3 HOME PAGE: wfc3.gsfc.nasa.gov UVIS Filters IR Filters

2 What Is WFC3? WFC3 is a facility instrument being developed on behalf of HST user community Will replace WFPC2 in Hubble in early 2004 Assures continued world class HST imaging science to end of mission International Scientific Oversight Committee (SOC) Integrated Product Team: GSFC, STScI, Ball Aerospace, Swales, etc. Ed Cheng (GSFC) Instrument Scientist John MacKenty (STScI) Deputy Instrument Scientist WFC3 will be the first panchromatic camera on HST. Two channels cover Near-UV to Near-IR without cryogen UVIS CCD channel backs up ACS while providing unique NUV science Wide field imaging from 200 to 1000 nm NIR HgCdTe channel improves greatly upon NICMOS

3 Scientific Oversight Committee SOC Member Affiliation Bruce Balick University of Washington Howard Bond Space Telescope Science Institute Daniela Calzetti Space Telescope Science Institute Marcella Carollo Columbia University Michael Disney University of Wales At Cardiff Michael Dopita Institute Of Advanced Studies Mt. Stromlo & Siding Spring Observatory Jay Frogel Ohio State University Donald Hall University of Hawaii Jon Holtzman New Mexico State University Gerard Luppino University Of Hawaii Patrick McCarthy Carnegie Observatories Robert O Connell (Chair Person) University of Virginia Francesco Paresce European Southern Observatory Abhijit Saha National Optical Astronomy Observatory Joseph Silk University of California, Berkeley John Trauger Jet Propulsion Laboratory Alistair Walker NOAO CTIO Brad Whitmore Space Telescope Science Institute Rogier Windhorst Arizona State University Erick Young University of Arizona

4 WFC3 Optical Parameters UVIS Channel Focal Plane Array: Two 2K x 4K Marconi backside illuminated CCDs FOV: 162 x 160 arcsec (39 mas pixels) Wavelength Range: nm Spectral Components: 42 filters, 5 quad filters, and 1 UV grism IR Channel Focal Plane Array: 1K x 1K Rockwell HgCdTe Hawaii-1R FOV: 123 x 139 arcsec (120 x 130 mas pixels) Wavelength Range: nm Spectral Components: 14 filters and 2 grisms

5 WFC3 Improves HST Imaging Sensitivity

6 WFC3 Subsystem Heritage Not Shown - WFC3 will reuse the EVA Radiator Handhold, Stowage Fixture and POM cover. LVPS Electronics Radiator Main (Detector) Radiator w/ Light Baffle Detector Heat Pipes Radiator Truss Assembly MEB #2 DEB (under MEB) Blind Mate Connector Optical Bench MEB #1 WF/PC I H/W reuse HST Heritage New H/W CEB C-Latch Enclosure A-Latch Mechanism Cover Pick-Off Mirror

7 Opto-Mechanical Subsystem Configuration UVIS Corrector Mech. IR M1 Mirror IR Detector Cold Enclosure UVIS Detector RCP/ Cold Stop IR Filter Wheel Mechanism IR Corrector Mech. CSM Shutter Mechanism IR Fold Mirror SOFA Mechanism Baffles Optical Bench (In Phantom) UVIS Optical Path (Blue) IR Optical Path (Red) Calibration Subsystem UVIS M2 Mirror POM

8 WFC3 OPTICAL CONFIGURATION

9 Status and Upcoming Events WFC3 has all major components in hand Excellent flight detectors from Marconi and Rockwell Complete filter set from Barr and Omega Optical Bench from Swales Optical elements from Tinsley Mechanisms, Electronics, and Bench Assembly ongoing at Ball Aerospace (to complete late summer) Integration with WF/PC-1 enclosure and heat pipes at GSFC in late 2002 System level testing Spring 2003 Launch on HST SM4 in January 2004

10 Reference Cubes Selectable Optical Filter Assembly (SOFA) - EMU Optical Assembly and Electronics End Item I & T Flow UVIS Shutter Assembly UVM1 UVIS Corrector Mechanism UVIS Detector Assy Surrogate Flight SOFA = Completed = In Process UVM2 Channel Select Mechanism (CSM) Pickoff Mirror Calibration Subsystem Deliver Optical Assembly to GSFC OCT DEC FEB 02 SEP NOV JAN MAR 02 APR MAY 02 MEB 2 JUN JUL 02 MEB 1 MEB 1 (pre-environmental test) AUG Chief Ray Target Plate (CRTP) IR Fold Mirror IRM1 IRM2 IR Corrector Mechanism Optical Bench Alignment Cube IR Filter Wheel Assembly Refractive Corrector Plate (RCP) & Pupil Mask IR Cold Enclosure Assembly IR Detector Assembly Surrogate CCD Detector Electronics Box (CEB) IR Detector Electronics Box (DEB) Low Voltage Power Supply (LVPS) Main Electronics Box (MEB)

11 HST Imaging FOV WFC3 UVIS WFC3 IR

12 IR Detector Housing Stackup Window Thermal Shield Vacuum Cover Interchange Plate Optical baffle Getter (1 of 4) Baseplate 6-stage TEC FPA Ceramic Cup

13 IR Detector Assembly Resides in Cold Enclosure Filter Wheel Mechanism Refractive Corrector Plate (RCP) Cold Enclosure IR Detector

14 IR FPA Dark Current and QE Performance Trends CEI Spec Spec to RSC CEI & RSC Spec at?s

15 WFC3 IR Bandpass Filters n_a n_a ont n_a cont ont FeII] NH3 CH4 H20/CH4 H20+NH3 [FeII] [FeII] cont ont n_b ont _b) FeII] e V Paschen_b cont Paschen_b H20/CH4 cont z(paschen_b) [FeII] de z 0W 102 Wide z Grism 102 F140W 141 Grism 141 8M ad J H F098M Broad J H Wavelength (microns)

16 WFC3 Filter Complement

17 High Z Galaxies (Stiavelli, Giavalisco, Carollo)

18 WFC3 Organization SYSTEM ENG. IPT Jim Sneary INSTRUMENT MANAGER Thai Pham INSTRUMENT SCIENTIST Ed Cheng DEPUTY INST. SCIENTIST John MacKenty SCIENTIFIC OVERSIGHT COMMITTEE (SOC) Robert O Connell (Chair) GODDARD Thai Pham SWALES Doug McGuffey BALL Mark Bergeland JPL Linda Herrell ManTech Charlie Diaz STScI Chris Blades SYSTEM ENG. Doug Fineberg OPTICAL BENCH Jill Holz SYSTEM ENG. Jordan Evans SYSTEM ENG. Bob Slusher SYSTEM ENG. Linda Herrell I&T Dan Hayward SIPT & OPS John MacKenty SCIENCE IPT Ed Cheng MECHANICAL Sharon Cooper OPTICAL BENCH Chris Lashley OPTICS Joe Sullivan SOFA Tom Bickler MECHANICAL Tom Huber DETECTOR ARRAYS J. Maliszewski IR FILTER R. Boucarut OPT. STIMULUS Bill Eichhorn THERMAL Rick Stavely EVA Jill Holz ELECTRONICS Ed Cheung I & T Jamie Dunn STRUCT. ANALYSIS Charles Kim ENCLOSURE Jordan Evans RADIATOR Steve Krein HEAT PIPES Steve Krein STRUCT. ANALYSIS Cengiz Kunt SOFA Leanne Presley I&T Bob Parizek STRUCT. ANALYSIS Tony Dreher IR DETECTOR Chris Miller UVIS DETECTOR Steve Franka ELECTRONICS Scot McArthur P/L MECHANICAL Raul Martinez P/L THERMAL Greg Johnson SOFTWARE/OPS Grant Blue M & P Beth Kelsic UVIS FILTERS John Trauger MECHANICAL Maurice Argoud HST CORE TEAM SUPPORT QA Rob Sticka Contracts Glenn Emig Resources Jim Smith Schedules David Turnbo Safety Bo Lewis CM Kathy Nieman Contamination David Hughes Materials Ben Reed EEE Parts Rich Williams Fabrication Jim Baker Metrology Phil Young HST S/W Brian Rehm HST Ops Todd Barto SI C&DH Ron Barasch Requirements Mike Davis HST Verification Kathy Jenkins