Here are sample data sets from the ASIVA instrument.

FITS FORMAT:

Sample 1 - DOWNLOAD

Sample 2 - DOWNLOAD

What is FITS ?

FITS is a format for image storage and exchange commonly used in Astronomy. To view these files, we recommend the program ds9, located at : http://hea-www.harvard.edu/RD/ds9 . It runs on most common platforms and requires no complicated install - it's all linked into one executable file.

How do I view the file ir_may4.fits ?

In one line, you can try :

ds9 -scale limits -100 0 -cmap hsv sample_may4.fits

Or you can simply type ds9 and use File->Open, Color, and Scale->Scale_Parameters menus. The file is in the form of a "Data Cube" (a sequence of 2-d images), so selecting the menu item Frame->Data_Cube will pop open a small control window. With this control, you can select an individual frame or use play/stop to watch a movie.

How do I view the file rgb_may3.fits ?

This file is a special case of a data cube, where three frames contain data for R, G, and B. You must start ds9 as follows :

ds9 -rgbcube rgb_may4.fits

or

ds9 -rgb

follwed by the File->Open_Other->RGB_FITS_Cube menu item.

IMAGES