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Page 2 SMOV Status SMOV is proceeding on-track Key programs executed –ERO program –Geometric distortion program completed –ACS to FGS alignment –Image quality –ACS Sensitivity –HRC Flat fields ERO press conference: April 30th

Page 3 SMOV

Page 4 Geometric Distortion Added 4th order polynomial terms to the solution for the WFC. The distortion fits are now good to approximately 0.1 pixels (RMS of 0.05 pixels)[Lindler & Meurer]

Page 5 WFC hot Pixel Growth Rates WFC hot pixel growth rate is ~170 pixels/day (Riess) –Anneal repaired ~45% of hot pixels (~80% in HRC)

Page 6 Sensitivity Initial results for HRC sensitivity program (Pavlovsky and DeMarchi) –Target GD71 –Filters in general agreement with predictions –Z Band filter is probably high due to absence of ground-based measurements beyond 1000 nm. –Near-UV measurements are under investigation

Page 7 CALACS Minor problems are being identified and fixed in CALACS –Quickfix for CALACS 13.4D –Change to sky determination –OPUS 14.0 due mid-June –Keyword rule modifications –Keyword database –Keyword Population –Reference files –New files ready for delivery –Bad pixel table, Bias, Dark, CR-Reject –WFC and HRC flat field files need updates

Page 8 SBC SBC anomalous recovery was terminated after initial LVPS turn-on Ball Aerospace expressed concern that LVPS really needed 24 hours to outgas at operating temperature before HV switch-on Impact: –Did not bring SBC on-line –Lost this weeks contamination monitor –Proposal has to be re-worked with special commanding before being re-scheduled –Moved up Grism & Ramp filter proposals

Page 9 Gyro-3 Gyro-3 glitch has resulted in at least 3 visits of observations from 9018 being lost –These observations are used to build L-flats using 47 Tuc images –Smearing of images precludes photometry Data Compression –Analysis shows we can use factor of 2 for bias and darks –Currently using 1.5

Page 10 Cycle 11 Calibration Plan: I (O’dea and Gilliland) –CCD Daily monitoring: Bias/dark verification at different gains –SBC Dark current monitoring. –SBC Fold analysis, anomalous recovery –SBC flats, CCD internal.at stability –Internal CTE monitor (EPER, FPR) –CCD Hot Pixel Annealing –Photometric stability and contamination monitor –HST focus monitor (ACS, WFPC2 parallel obs.)

Page 11 Cycle 11 Calibration Plan:II –Earth flats. –Geometric distortion check, full field sensitivity, L-flat, external CTE checks. –Photometry cross-cal. : WFPC2, SDSS, U,B,V,R,I. –SBC Photometric cross-cal with STIS –Polarimetry calibration –PSF definition and HRC red halo –Coronographic (CORON1.8 and 3.0) PSF –Shutter stability verification –Narrowband filter red-leak check –Wavelength stability narrowband and ramps –Photometry for extreme red objects –Grism/prism checks –Linearity, gain setting qualification –Sky flats.

Page 12 Cycle 11 Calibration Plan:III Special calibrations – capability definition. –Ramp observations - flat field, lambda dependent calibration –Determination of limiting (high) S/N for repeated observations –Optical baffling check (bright stars off edge) –Preflash flat field check –Scattered Earthshine (near limb) –SBC prisms, brief characterization –Field dependence of polarimetry.