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Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Creating Calibrated Images with SECCHI_PREP 5 th SECCHI Consortium Meeting March.

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Presentation on theme: "Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Creating Calibrated Images with SECCHI_PREP 5 th SECCHI Consortium Meeting March."— Presentation transcript:

1 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Creating Calibrated Images with SECCHI_PREP 5 th SECCHI Consortium Meeting March 6, 2007 Robin Colaninno Naval Research Laboratory George Mason University

2 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France What is SECCHI_PREP? ● IDL software routine to read in and perform the latest calibration and image correction procedures for all SECCHI instruments. ● SECCHI_PREP is intended to be the single routine that the user would interact with to process level 0.5 data. Level 0.5 Data SECCHI_PREP Level 1.0 Data Level 2.0 Data

3 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France The SECCHI_PREP Way ● Fast, Efficient, Flexible and Friendly  All Procedures Are Modular  Calibration is Easily Updatable  Optional XSECCHI_PREP GUI ● Intended Users  Instrument Teams  Solar Physicists and Researchers  Other SSW Applications (Festival and SWB)

4 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France SECCHI_PREP ● General Procedures  Reads Image and Header  Trims Image  Buffers Subfield Images  Calibrates Images  Updates Header  Returns to Memory and/or Writes Image Files ● FITS, PNG, and JPG

5 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Using SECCHI_PREP with EUVI ● Correction  SEB Image Processing Correction ● SEB IP - divide by 2, 3, 4 and square root  Normalize to 'Clear Filter'  Subtract the Bias  Normalize Exposure Time  Apply a Calibration Image  DN to Detected Photons Correction

6 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Using SECCHI_PREP with COR1 & COR2 ● Calibration  SEB Image Processing Correction ● SEB IP - divide by 2, 3, 4 and square root  Subtract the Bias  Normalize Exposure Time  Apply a Calibration Image ● vignetting and flat fielding  DN to MSB Calibration Factor

7 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Creating Level 2 Images ● Polarization Image  Total Brightness  Polarized Brightness  Percent Polarized  Polarization Angle ● Restrictions  Input files must be sorted into triples  Only one type of image can be returned

8 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Using SECCHI_PREP with HI1 & HI2 ● Correction  Corrects for Shutterless Mode ● Steve Crothers  Apply a Calibration Image

9 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Example Calls Default call: IDL> secchi_prep, files, image, header To limit the memory usage: IDL> secchi_prep, files, image,header, outsize = 512 To save FITS file and return to memory: IDL> secchi_prep, files, image, header, /write_fts To only save FITS file : IDL> secchi_prep, files, /write_fts

10 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France SECCHI_PREP Keywords SECCHI_PREP, filenames, images, headers [,SAVEPATH=path] [,OUTSIZE=value] [,/WRITE_FTS] [,/WRITE_PNG] [,/WRITE_JPG] [,/TRIM_OFF] [,/ROTATE_ON] [,/CALIBRATE_OFF] [,/CALFAC_OFF] [,/NORMAL_OFF] [,/DN2P_OFF] [,/BIAS_OFF] [,/EXPTIME_OFF] [,/CALIMG_OFF] [,/SEBIP_OFF] [,/NEW_CALIMG] [,CALIMG_FILENAME=filename] [,/SHUTTERLESS_OFF] [/SMASK_ON] [/IMASK_ON] [,/BMASK_OFF] [,/FILL_MEAN] [,/FILL_VALUE=value] [/POLARIZ_ON] [,/pB] [,/MU] [,/PERCENT] [,/COLOR_ON] [,/DATE_ON] [/LOGO_ON]

11 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France XSECCHI_PREP

12 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Future Improvements ● ICER Missing Sector Masking ● Background Subtraction ● Cosmic Ray and Star Removal ● Expanding COR_POLARIZ ● And?

13 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France Websites ● SECCHI_PREP User Guide http://secchi.nrl.navy.mil/wiki/pmwiki.php?n=Main.SecchiPrep ● Feedback  SECCHI Bugzilla http://secchi.nrl.navy.mil/bugzilla/  SECCHI_PREP Feature Request Wiki Page http://secchi.nrl.navy.mil/wiki/pmwiki.php?n=Main.SecchiPrep

14 Robin Colaninno March 6, 2007 5 th SECCHI Consortium Meeting Orsay, France SECCHI Prepped

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