Hostname: page-component-7bb8b95d7b-s9k8s Total loading time: 0 Render date: 2024-09-11T11:02:32.986Z Has data issue: false hasContentIssue false
  • English
  • Français

Photographic Enhancement of Hα Films

Published online by Cambridge University Press:  05 March 2013

David Malin
David Malin*
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia; dfm@aaoepp.aao.gov.au
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The appearance of Tech Pan film in sizes that were useful in large Schmidt telescopes immediately offered new opportunities and advantages to users of Schmidt telescopes. Among the advantages were a spatial resolution that was well matched to the image quality produced by the optics of the telescope under the best conditions. For the first time such images were well sampled on Schmidt telescopes. Tech Pan was initially formulated by Eastman Kodak as a 35 mm solar patrol film designed to have enhanced sensitivity around the 656·2 nm Hα line. It is this feature, combined with the excellent imaging characteristics, that we seek to exploit with the new UK Schmidt Telescope (UKST) Hα survey. This paper briefly reports some preliminary comparative tests of Tech Pan with the new Hα filter at UKST and suggests ways in which data from the new survey can be quickly exploited using advanced photographic techniques such as photographic amplification. This simple contact copying process rapidly reveals extended low surface brightness features that simple inspection cannot.

Keywords

techniques: image processingISM: structure
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 15 , Issue 1 , 1998 , pp. 38 - 41
Copyright
Copyright © Astronomical Society of Australia 1998

References

Bothun, G. D., Impey, C. D., & Malin, D. F. 1991, ApJ, 376, 404 CrossRefGoogle Scholar
Couch, W. J., Ellis, R. E., Kibblewhite, E. J., Malin, D. F., & Godwin, J. 1984, MNRAS, 209, 307 Google Scholar
Malin, D. F. 1978, Nature, 276, 591 CrossRefGoogle Scholar
Malin, D. F., & Carter, D. 1983, ApJ, 274, 534 Google Scholar
Meaburn, J. 1976, Detection and Spectrometry of Faint Light, (Dordrecht: Reidel), p. 149 CrossRefGoogle Scholar
Parker, Q. A., & Bland-Hawthorn, J. 1998, PASA, 15, 33 CrossRefGoogle Scholar
Parker, Q. A., & Phillipps, S. 1998, PASA, 15, 28 Google Scholar
Parker, Q. A., Phillipps, S., & Morgan, D. H. 1995. in Future Utilisation of Schmidt Telescopes, IAU Coll. 148, ASP Conf. Ser. 84, ed. J. M. Chapman et al. (San Francisco: ASP), p. 129 Google Scholar