Parallax of B.D. 80°694

Primitive Parallax and Parallax Primitives

This paper describes an implementation of parallax depth perception designed to be a contributing unit to a distributed perceptual intelligence. The work was done in the context of the Cog project, a large-scale eeort to develop human or at least infant intelligence from the bottom up. Our implementation uses fast-approximation \good enough" region mapping and relevant motion detection over mul...

Exoplanet Transit Parallax

The timing and duration of exoplanet transits has a dependency on observer position due to parallax. In the case of an Earth-bound observer with a 2 AU baseline the dependency is typically small and slightly beyond the limits of current timing precision capabilities. However, it can become an important systematic effect in high-precision repeated transit measurements for long period systems due...

Attributes of Gravitational Lensing Parallax

The cosmological density of compact objects in the range 10 10 is currently uncertain. Potentially important components to the density of the universe include stars, MAssive Compact Halo Objects (MACHOs), and massive black holes. Here one hypothetical path to estimating the space density of these objects is proposed: the simultaneous measurement by separated observers of compact sources at cosm...

About statistical-parallax algorithms

The results obtained by two algorithms of statistical parallaxes applied to a large sample of RR Lyrae stars are compared. They show no significant difference and confirm the validity of the earlier approach based on the principle of maximum likelihood.

On bD-Sets and Associated Separation Axioms