Action shots of the latest GAIA

 Site Index
 o Site Home
 o IMG
 o SST

  GAIA Index
 o JCMT clumps
 o First Light
 o On the Web
 o Astrometry hints
 o Latest Snapshots
 o OS X version
 o Cygwin/Windows version
 o GAIA 3D
 o 3D Visualisation

 External Links
 o Durham
 o EAO
 o Starlink

Displaying FITS MEF files

This image shows the latest version of GAIA displaying a Multiple Extension Fits file (MEF). The image is from the KPNO CCD Mosaic camera. Using this new facility allows you to trivially see each extension image and display it (the second extension image is shown displayed here). It is also possible to perform analyses, without extracting the images from the extensions.

Displaying polarization data

In this picture GAIA is shown displaying a linear polarization map as a series of green vectors. The object is a bright star with surrounding nebulosity. The star is clearly the main source of scattered light in the region, as can be seen by the pattern of vectors that form a centro-symmetric pattern about it.

This new facility is provided by the Polarimetry toolbox. This is designed to most closely work with catalogues produced by the POLPACK package, but will accept polarization data from other sources.

The toolbox allows you to interact with the vector map, by providing a continuous reading out of individual values and by selecting sub-sets of vectors. Subsets can be defined using algebraic expressions or by dragged out rectangular regions. Any selected parts can be removed or saved to new catalogues. New vector maps can be created by binning vectors and simple statistical properties of the selections can be reported.

Recording positions

This image shows another of GAIA's new toolboxes in action. This one is designed to help you record the positions of any interesting features (say an observing list) and to measure the integrated seeing properties of the objects.

The list of positions can be saved to a simple text file, and may also be restored from such a file, so you can create lists of potentially interesting objects easily from other sources.

Other interesting features are the ability to precess any input positions to the coordinate system of the image and to do things like show labels for all or some of the objects, as well as the usual list of facilities for determining the marker colours, centroiding to the nearest intensity peak etc.

Questions or comments to:

Copyright © 2005 Central Laboratory of the Research Councils
Copyright © 2006 Particle Physics and Astronomy Research Council
Copyright © 2008-2009 Science and Technlogy Facilities Council
Copyright © 2009-2013 Peter W. Draper
Last modified: 02-Jun-2016
This site generated by htmlPX.