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images script

images script. M. Ehle & Rosemary Willatt (ESAC) April 2007. motivation. use XMM-Newton archival data produce attractive and scientifically valid images used by scientists to illustrate work used to populate XMM-Newton Image Gallery. M. Ehle & Rosemary Willatt (ESAC) April 2007.

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images script

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  1. images script M. Ehle & Rosemary Willatt (ESAC) April 2007

  2. motivation • use XMM-Newton archival data • produce attractive and scientifically valid images • used by scientists to illustrate work • used to populate XMM-Newton Image Gallery M. Ehle & Rosemary Willatt (ESAC) April 2007

  3. Script Format • based on script by Wolfgang Pietsch and Michael Bauer (MPE Garching) • bash shell script • input file for user-defined parameters • script divided into sections which can be executed separately M. Ehle & Rosemary Willatt (ESAC) April 2007

  4. Processing Flow Chart begin/all • INITIAL PROCESSING • produce event lists from odf, and gti-cleaning pn/pnfinal/pnmosfinal • PN • produce pn images and exposure maps mos/mosfinal • MOS • produce MOS images and exposure maps final • FINAL • combine MOS and pn images

  5. Initial preparation • cifbuild and odfingest • epchain, emchain, omichain (optional) • preparation of gti files using user-defined count rate threshold • gti cleaning M. Ehle & Rosemary Willatt (ESAC) April 2007

  6. Separately for each camera • Cleaning of bad pixels and columns • using calibration information • user defined • Subtract OoT events (pn only) • Make images, exposure maps and masks; several energy bands in one go • Smooth images (Gaussian) with masks M. Ehle & Rosemary Willatt (ESAC) April 2007

  7. Combining images from all cameras • Make combined exposure map and mask • Weight pn against MOS cameras in each band • Use images, exposure maps and masks to combine images from all cameras M. Ehle & Rosemary Willatt (ESAC) April 2007

  8. Creating False-color images • (Not part of the script but shortly explained in documentation) • Photoshop & fits liberator plugin (by ESO/ESA) • Or ds9  Frame: New Frame RGB • Or Gimp  for each Layer: Colors  Filters: Colors: Compose M. Ehle & Rosemary Willatt (ESAC) April 2007

  9. Examples of images: SN2004dj in NGC 2403 M. Ehle & Rosemary Willatt (ESAC) April 2007

  10. OMC2

  11. WR25 Carina Nebula

  12. M 83

  13. Plans • Currently under testing with more public data sets; documentation nearly ready • Release to beta-testers, e.g. BGWG members within the next 1-2 weeks • Afterwards: incorporation of comments, reports  public release ~June via BGWG pages? • Eventually also for SAS workshop,19-21 June M. Ehle & Rosemary Willatt (ESAC) April 2007

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