An astronomical coincidence

An Object - Oriented Approach to Astronomical DatabasesR

The rate at which we can acquire astronomical data out-strips our ability to manipulate and interpret it using standard techniques. Future digital astronomical surveys will enter the terabyte regime. In addition, the actual data themselves will be complex, comprising images and spectra, as well as the traditional measured attributes. We describe here an implementation of a prototype object-orie...

Astronomical demonstration of an optical vortex coronagraph.

Using an optical vortex coronagraph and simple adaptive optics techniques, we have made the first convincing demonstration of an optical vortex coronagraph that is coupled to a star gazing telescope. We suppressed by 97% the primary star of a resolvable binary system, Cor Caroli. The stars had an angular separation of 1.9lambda/D at our imaging camera. The secondary star suffered no suppression...

What is an Astronomical Data Model ?

Using techniques from semantic data modeling and object-oriented data modeling, an astronomical data model is identiied as a kind of conceptual analysis. The general characteristics of such a model are presented, as well as its relationship to computer-based data structures and the FITS standard for transporting data. The eeective use of data models in relation to instrument speciic data, in co...

An Object Oriented Approach to Astronomical Databases

The rate at which we can acquire astronomical data outstrips our ability to manipulate and interpret it using standard techniques. Future digital astronomical surveys will enter the terabyte regime. In addition, the actual data themselves will be complex, comprising images and spectra , as well as the traditional measured attributes. We describe here an implementation of a prototype object orie...

An infrared upconverter for astronomical imaging