146 citations · 290 across the 11 of their papers we have counts for
11 papers
Towards sub-milliarcsecond astrometric precision using seeing-limited imaging
Noam Segev, Eran O. Ofek, Yossi Shvartzvald +21
The Earth's atmospheric turbulence degrades the precision of ground-based astrometry. Here, we discuss these limitations and propose that, with proper treatment of systematics and…
The Large Array Survey Telescope -- Pipeline. I. Basic image reduction and visit coaddition
E. O. Ofek, Y. Shvartzvald, A. Sharon +18
The Large Array Survey Telescope (LAST) is a wide-field telescope designed to explore the variable and transient sky with a high cadence and to be a test-bed for cost-effective tel…
The Large Array Survey Telescope -- System Overview and Performances
E. O. Ofek, S. Ben-Ami, D. Polishook +38
The Large Array Survey Telescope (LAST) is a wide-field visible-light telescope array designed to explore the variable and transient sky with a high cadence. LAST will be composed…
The Large Array Survey Telescope -- Science Goals
S. Ben-Ami, E. O. Ofek, D. Polishook +20
The Large Array Survey Telescope (LAST) is designed to survey the variable and transient sky at high temporal cadence. The array is comprised of 48 F/2.2 telescopes of 27.9cm apert…
Astrometric detection of binary asteroids
Noam Segev, Eran O. Ofek, David Polishook
Binary asteroids probe thermal-radiation effects on the main-belt asteroids' evolution. We discuss the possibility of detecting binary minor planet systems by the astrometric wobbl…
The Weizmann Fast Astronomical Survey Telescope (W-FAST): System Overview
Guy Nir, Eran O. Ofek, Sagi Ben-Ami +8
A relatively unexplored phase space of transients and stellar variability is that of second and sub-second time-scales. We describe a new optical observatory operating in the Negev…
A high-rate foreground of sub-second flares from geosynchronous satellites
Guy Nir, Eran O. Ofek, Sagi Ben-Ami +3
The Weizmann Fast Astronomical Survey Telescope (W-FAST) is a 55cm optical survey telescope with a high cadence (25Hz) monitoring of the sky over a wide field of view (~7deg^2). Th…
Faint, high proper motion star candidates selected from the SDSS and PS1 catalogs
Noam Segev, Eran O. Ofek
High proper motion stars probe several extreme stellar populations, including nearby objects, Galactic halo stars, and hyper-velocity stars. Extending the search for high proper mo…
Measuring Influence on Instagram: a Network-oblivious Approach
Noam Segev, Noam Avigdor, Eytan Avigdor
This paper focuses on the problem of scoring and ranking influential users of Instagram, a visual content sharing online social network (OSN). Instagram is the second largest OSN i…
Existence of steady gap solutions in rotating black hole magnetospheres
Amir Levinson, Noam Segev
Under conditions prevailing in certain classes of compact astrophysical systems, the active magnetosphere of a rotating black hole becomes charge-starved, giving rise to formation…
Learn on Source, Refine on Target:A Model Transfer Learning Framework with Random Forests
Noam Segev, Maayan Harel, Shie Mannor +2
We propose novel model transfer-learning methods that refine a decision forest model M learned within a "source" domain using a training set sampled from a "target" domain, assumed…