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Guide to the Stars Server

This is designed to be a kind of walkthrough through the Stars Server. The walkthrough is documentation on the usage of the Stars Server from an end-user's point of view.

The Main Page

The main page is the main index for the Stars Server for the end-user. Click the link to get to it.

The Navigation Bar

The Navigation Bar on the left has links to subfolders on the web part of the server. You can hover over the boxes, and some hidden content will pop out at you!

  • Home: It's a recursive link. Maybe I'll give it some purpose by making the front page a template, and the center column will be used for summoned content.
  • Science: This links to the /science folder in the web server. Underneath it:
    • IASC pages: This was used by the International Asteroids Search Collaboration for organizing and indexing asteroid pictures.
    • ImageGUI: This will bring you to a download page for the obviously popular program, ImageGUI, revamped by Alex Duda.
  • Telescopes: This links to the /telescopes folder. Underneath it:
    • Monitors: Raki Dawis and Neil Stilin developed some cool sensors for monitoring the environmental conditions in each of the domes.
  • Related Links: These links are miscellaneous links.
    • Yerkes Home: This link brings you to http://astro.uchicago.edu/yerkes which is the home page for Yerkes.
    • Young Stars: Find our biographies here!
    • Dome Cam: You can find the dome camera from here.
  • Internal: These are links for the interns.
    • Projects Wiki: brings you here!
    • UChicago Time: gets you paid!
  • File Manager: It's a file manager hosted by Yerkes. It's used for storing files on Stars. There is a tutorial that will guide you through using it.
  • FITS uploader: It's an uploader to the Stars Server to upload FITS images to a folder automagically. There is a tutorial for that.
  • Pictures of the Universe: This is the blog. This is used for uploading final pictures to the Server and hosting them in a very nice fashion.
  • Applets: I guess Alex was thinking about making more applets.
    • FITS Viewer: This looks at your FITS file and tells you all of its metadata tags. All you do is choose a picture and it autostarts.

To access the subsets, again, hover over the boxes to see what's hidden underneath it.

The Center Column

There's a picture in the center from the Picture the Universe blog.

The FITS Viewer

The FITS Viewer is at stars.uchicago.edu/fitsview17. It is a tool to look at and analyze FITS images stored on the server.

The following screenshot illustrates the parts of Web View:

Function Navigation:  This panel provides access to the basic Web View functions:

  • Date / Object List: Displays a list of all current and past observations

  • Data Viewer: Links to the data viewer.

  • Pipeline Log: Displays the most recent messages in the pipeline log.

  • Help / Manual: Links to the current version of the stars server manual.

To open a new tab, just right click (or Alt click - Win, or Command click - Mac) on any of these links.

Data Viewer

The Data Viewer is the primary interface to view and analyze image data. The screenshot above shows the elements of the interface. Depending on the width of your browser window the elements can be arranged in different ways:

Data Selection: These pulldown menus allow the user to select the data to view.

  • Date: Select a date.

  • Object: Select an Object (observation) during the selected date.

  • File: Select a raw data file from the selected Object.

  • Pipe Step (optional): Select a data reduction step to view.

The selections above identify an individual .FITS file to view. The Download File and File Info tools both refer to that FITS file.

  • Display: Which data set of the selected FITS file to look at. Header and tabular information can also be selected here.

  • Image Frame: If the viewed data contains an image cube, layers of that cube can be selected here.

File Info:This field displays information from the FITS header of the selected file.

Image Tools: This dialog provides information about the image display and allows the user to change display zoom, scale and color. These options are only available if image data is being displayed. The Zoom Display shows a zoomed-in image of the pixels around the mouse cursor, mouse coordinates and cursor value are shown above.

Image Display: The image shows the image data. If the current image does not fit the screen, vertical and horizontal scroll bars appear.

Problems and Fixes: If there are problems with the data viewer, reload the page or reset your browser. Other errors can occur:

  • The data viewer returns an error message from Apache. Usually the cause for that is an empty Flight/AOR folder or a corrupted FITS file. Open a different date or a different AOR. Alternatively, remove offending files and folders on the webserver. When the automatic data reduction is running it is possible that certain Flight/AOR folders contain incompletely reduced observations, wait until the reduction is complete and reload the page.