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6 papers · 2 filters
A new class of SETI beacons that contain information (22-aug-2010)
G. R. Harp, R. F. Ackermann, Samantha K. Blair +4
In the cm-wavelength range, an extraterrestrial electromagnetic narrow band (sine wave) beacon is an excellent choice to get alien attention across interstellar distances because 1…
Primary Beam and Dish Surface Characterization at the Allen Telescope Array by Radio Holography
ATA GROUP, Shannon Atkinson, D. C. Backer +46
The Allen Telescope Array (ATA) is a cm-wave interferometer in California, comprising 42 antenna elements with 6-m diameter dishes. We characterize the antenna optical accuracy usi…
The ATA Digital Processing Requirements are Driven by RFI Concerns
G. R. Harp
As a new generation radio telescope, the Allen Telescope Array (ATA) is a prototype for the square kilometer array (SKA). Here we describe recently developed design constraints for…
Early Science with SOFIA, the Stratospheric Observatory for Infrared Astronomy
E. T. Young, E. E. Becklin, P. M. Marcum +38
The Stratospheric Observatory for Infrared Astronomy (SOFIA) is an airborne observatory consisting of a specially modified Boeing 747SP with a 2.7-m telescope, flying at altitudes…
FIRST, a fibered aperture masking instrument. I. First on-sky test results
E. Huby, G. Perrin, F. Marchis +12
In this paper we present the first on-sky results with the fibered aperture masking instrument FIRST. Its principle relies on the combination of spatial filtering and aperture mask…
Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
Jeffrey C. Smith, Martin C. Stumpe, Jeffrey E. Van Cleve +8
With the unprecedented photometric precision of the Kepler Spacecraft, significant systematic and stochastic errors on transit signal levels are observable in the Kepler photometri…