Target change: withdraw HD-10269 and associated visits and added HD-24649 (HIP 18187) and visits 15 & 16 (PCR 72217 approved). ----- Attempting Submission 1 (Tue Sep 11 17:21:44 GMT 2012) ----- errors are completed visits STIS Coronagraphy of New Debris Disks from the WISE All-Sky Survey Debris disks trace the collisional breakdown of asteroid and comet parent bodies orbiting nearby main sequence stars. While present in ~15% of FGK stars - as diagnosed by infrared excess measurement by IRAS, ISO, and Spitzer - only 6 debris disks have been detected in scattered light around late-type stars. The detectability of debris disks in scattered light trends strongly with the magnitude of their infrared excess, so progress in this field depends on identifying new stars with strong excess. The Wide-Field Infrared Survey Explorer (WISE) has just completed new, sensitive all-sky mapping in the 3.3, 4.6, 12, and 22 micron bands. Association of the WISE sources to Hipparcos stars has led to the identification of 320 nearby main sequence stars with robustly detected warm 22 micron excesses not previously known. We propose STIS coronagraphic imaging of the six brightest and nearest debris disks that WISE has found in association with solar-type stars; all six have excesses stronger than the successfully imaged disk of HD 107146. Our goal is to obtain the first resolved images of these disks at ~5 AU resolution, define the disk sizes and orientations, and uncover disk substructures indicative of planetary perturbations. The results should double the number of debris disks imaged around late-type stars, opening a wider window into the structure of planetary systems. We are using the STIS coronagraph to image circumstellar debris disks around 6 stars with WISE-detected excesses. Each target is observed in two back-to-back orbits, with the two orbits separated by ~30 deg in telescope roll. The two rolls allow separation of the disk and instrumental components of the image using an interative algorithm. At the beginning of each orbit the usual STIS coronagraph acquisition is done. Then, a ~2000 sec exposure (split into multiple shorter CR-splits) is taken with the star located behind the coronagraphic wedge at WEDGEA1.0. Each orbit uses the same image sequence. Exposure times and CR-splits are chosen to minimize, but not completely prevent, saturation. ISM AND CIRCUMSTELLAR MATTER 12 false 0.0 0.0 false false false false SUPPORTED STAR F3-F9 J2000 J2000 STAR F3-F9 J2000 J2000 STAR G V-IV J2000 J2000 STAR F3-F9 J2000 J2000 STAR F3-F9 J2000 J2000 STAR G V-IV Replaces target #6 (HD-172669) HIP-35198 J2000 STAR F3-F9 Replaces HD 10269 HIP-18187 J2000 STIS/CCD Imaging Yes No WEDGEA1.0 STIS/CCD Imaging Yes No WEDGEA1.0 STIS/CCD Imaging Yes No WEDGEA1.0 STIS/CCD Imaging Yes No WEDGEA1.0 STIS/CCD Imaging Yes No WEDGEA1.0 STIS/CCD Imaging Yes No WEDGEA1.0 C:\Users\krist\AppData\Local\Temp\OPVisit7464072575583123781.xml Timing link suitability includes constraints ([02 After 01 by 0.1 to 0.1 days]) The scheduling data was generated by CASM 20.2. 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C:\Users\krist\cycle19\OP-cache\12573_2nd_revision-v15.xml Debris disk seen by Herschel has PA=131 deg. The orientation is specified here to place the disk approximately perpedicular to Wedge A. 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