Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

Journal Article

A Fast Algorithm for Cosmic‐Ray Removal from Single Images

Wojtek Pych
Publications of the Astronomical Society of the Pacific
Vol. 116, No. 816 (February 2004), pp. 148-153
DOI: 10.1086/381786
Stable URL: http://www.jstor.org/stable/10.1086/381786
Page Count: 6
Were these topics helpful?
See something inaccurate? Let us know!

Select the topics that are inaccurate.

  • Download PDF
  • Add to My Lists
  • Cite this Item
We're having trouble loading this content. Download PDF instead.

Abstract

ABSTRACT We present a method for detecting cosmic rays in single images. The algorithm is based on a simple analysis of the histogram of the image data and does not use any modeling of the picture of the object. It does not require a good signal‐to‐noise ratio in the image data. Identification of multiple‐pixel cosmic‐ray hits is realized by running the procedure for detection and replacement iteratively. The tests performed by us show that the method is very effective when applied to the images with spectroscopic data. It is also very fast in comparison with other single‐image algorithms found in astronomical data‐processing packages. Practical implementation and examples of application are presented.

Notes and References

This item contains 6 references.

REFERENCES
  • ['Murtagh, F. D. 1992, in ASP Conf. Ser. 25, Astronomical Data Analysis, Software, and Systems I, ed. D. M. Worrall, C. Biemesderfer, & J. Barnes (San Francisco: ASP), 265']
  • ['Rhoads, J. E. 2000, PASP, 112, 703']
  • ['Salzberg, S., Chandar, R., Ford, H., Murthy, S. K., & White, R. 1995, PASP, 107, 279']
  • ['Shaw, R. A., & Horne, K. 1992, in ASP Conf. Ser. 25, Astronomical Data Analysis, Software, and Systems I, ed. D. M. Worrall, C. Biemesderfer, & J. Barnes (San Francisco: ASP), 311']
  • ['van Dokkum, P. G. 2001, PASP, 113, 1420']
  • ['Windhorst, R. A., Franklin, B. E., & Neuschaefer, L. W. 1994, PASP, 106, 798']