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Numbers, Tables, Pictures: A Prerequisite to DS9

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- Get your data in FITS!
- Measure numbers; See pictures
- Seeing through Tables
- Mess’n with the numbers

- The FITS Support Office
- at NASA/GSFC
- What is FITS?
- The standard data format used in astronomy
- Stands for 'Flexible Image Transport System'
- Endorsed by NASA and the International Astronomical Union
- Much more than just another image format (such as JPG or GIF)
- Used for the transport, analysis, and archival storage of scientific data sets consisting of:
- Multi-dimensional arrays (1-D spectra, 2-D images, 3-D data cubes, etc.)
- Tabular data containing rows and columns of information

http://fits.gsfc.nasa.gov/fits_home.html

How Do You Like Your Data?

Cool Pic, huh?

Resulting Image

Data

Color Tables

Out=log10(In)

Out=In

Out=In2

Mess’n

With

Tables

Out=In1/2

Out=In*2

Boxcar

Smoothing

Mess’n

With

Numbers

11x11

7x7

3x3

/9

/49

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