The Advanced Camera for Surveys

Last updated
27 March 2004 19:21:16

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About this site



  • Facilitate navigation
  • Distinguish document content from structure and style
  • Ensure high usability
  • Provide a unified visual appearance



  • Promote internet standards
  • Promote accessibility (Guidelines)
  • Promote voluntary content rating (RSACi)
  • Use free software tools where applicable


about/ Information about this site
general/ General information
  computing/ Computer resources & support
instrument/ Instrument related information
  archive/ Data archive
  calibration/ Instrument and subsystem level calibration
  coronagraph/ Coronagraph
  detectors/ CCD & MAMA detectors
  filters/ Filters and dispersers
  overview/ General introduction
  photogallery/ Photo gallery
science/ Science related information
  pipeline/ Science data pipeline
  programs/ Science programs
search/ ACS web site search
stats/ Web server statistics
style/ Style sheets


This site is implemented on a Sun Microsystems Enterprise Server running Apache web server software.

The site design uses PHP 4 to break down an individual page into its component parts. In general, we maintain only one dynamic HTML file (/index.phtml). Every other page on this site is actually a symbolic link to this file on the server filesystem. The individual page components are included dynamically based on the symbolic link name.

For example let's suppose that we create a symbolic link to /index.phtml called cool_new_page.phtml. The document content will be included from a file named cool_new_page.phtml.content located in the same directory.

Required include files
  • .content
    the document content (text and HTML markup allowed)
  • .author
    the content author (text and HTML A tags allowed)
Recommended include files
  • .title
    the document title (text only)
  • .meta
    items for inclusion into the HTML document header (alternate style sheets, META tags, and scripts allowed)


Privacy Statement


via Postal Service:
The Advanced Camera for Surveys
Johns Hopkins University
Department of Physics and Astronomy
3400 North Charles St
Baltmore, Md. 21218
via electronic mail: Webmaster

We are interested in what you think, so please send us your comments.
Site administrator: William Jon McCann
Design & Graphics: William Jon McCann
Drafted by William Jon McCann
Fri Feb 4 14:43:00 EST 2000