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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/008/04/0343-0350

    • Keywords

       

      HST; point spread function—image centring—image deconvolution

    • Abstract

       

      A mixture of off-centred Gaussians is used to approximate the predicted monochromatic point spread functions (PSFs) of Hubble space telescope (HST) at long wavelengths, and also, with a reduced number of parameters, the wide-band PSFs. The usefulness of the approximation in simulation and analysis of HST data is shown by means of application to image centring and convolution-deconvolution problems.

    • Author Affiliations

       

      O. Bendinelli1 G. Parmeggiani2 F. Zavatti1

      1. Dipartimento di Astronomia, Università di Bologna, Via Zamboni 33, Bologna - 40126, Italy
      2. Osservatorio Astronomico di Bologna, Via Zamboni 33, Bologna - 40126, Italy
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

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