Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/WarnicktagS2581tp.pdf Дата изменения: Tue Jun 8 19:04:09 2010 Дата индексирования: Sat Jun 26 00:08:26 2010 Кодировка: Поисковые слова: universe

Proposal Identification No.:

S2581

Date Received:

2010-May-21 12:38:27

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Director Discretionary Time Astronomy (see schedule) Hours

AO40 Feasibility Study Focal Region Mapping Experiment

The AO40 Feasibility Study Focal Region Mapping Experiment will provide experimental data that supports the specification and design of an L-band phased array feed (PAF) for Arecibo. The ob jectives are to map the sensitivity of formed beams as a function of x-y position in the AO focal plane over roughly a 1.6m diameter region, determine the optimal z focus position, map formed beam pattern shape and sidelobes, and characterize PAF gain stability, aperture efficiency, and beam equivalent system noise temperature. A 19 element PAF will be mounted on a three-axis mechanical positioner, moved throughout the AO focal region, and at each array position, the telescope will be pointed to a regular grid of angles to scan a bright calibrator point source across the PAF field of view, while recording signal data from the array for post-processing.

Name Karl F Warnick

Institution Brigham Young University

E-mail warnick@ee.byu.edu

Phone 801-422-1732

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup

Atmospheric Observation Instruments:

Description of Observer Equipment: BYU/NRAO 19 Element L-band Phased Array Feed Sp ecial Equipment or setup: none 1


RFI Considerations Frequency Ranges Planned

2