[Calendar] WebEvent: AOC Conference Room 317: Public Event Submission

[WebEvent]

WebEvent Public Event Submission
------
The following event has been submitted by a member of the 
public.  It will not be shown on public calendars until it 
is marked as approved. 

From: Jeff Kern
Email: jkern at nrao.edu
Title: UNM Seminar
Date: Thursday, March 22, 2012
Time: 2 p.m. - 3 p.m.  Mountain Time (US and Canada) Time
Calendar: AOC Conference Room 317

Description:
Presented by Phil Kronberg (LANL)

Complete radio imaging of a field of sky requires the collection of *all* Fourier components of the image -- i.e. |u,v|= (0,0) to (u_max, v_max). For wide fields of several degrees it can be challenging to produce a distortion-free field of optimum surface brightness sensitivity. This is especially important in low frequency radio astronomy. If structures on *all* angular scales are to be well reproduced, the combination of a single dish and an interferometer is generally needed. The largest structures often have low surface brightness, so ideally, a large single dish is needed. 
In my talk, I describe how the DRAO synthesis telescope, a wide field interferometer of 1km effective aperture, has been combined with the 0.3km aperture Arecibo telescope to produce ultra-low surface brightness continuum images of the sky at 0.4 GHz. I describe some of the first results and discoveries. 

-------

The following event was submitted:

author: guest
body: Presented%20by%20Phil%20Kronberg%20%28LANL%29%0D%0A%0D%0AComplete%20radio%20imaging%20of%20a%20field%20of%20sky%20requires%20the%20collection%20of%20%2Aall%2A%20Fourier%20components%20of%20the%20image%20--%20i.e.%20%7Cu%2Cv%7C%3D%20%280%2C0%29%20to%20%28u_max%2C%20v_max%29.%20For%20wide%20fields%20of%20several%20degrees%20it%20can%20be%20challenging%20to%20produce%20a%20distortion-free%20field%20of%20optimum%20surface%20brightness%20sensitivity.%20This%20is%20especially%20important%20in%20low%20frequency%20radio%20astronomy.%20If%20structures%20on%20%2Aall%2A%20angular%20scales%20are%20to%20be%20well%20reproduced%2C%20the%20combination%20of%20a%20single%20dish%20and%20an%20interferometer%20is%20generally%20needed.%20The%20largest%20structures%20often%20have%20low%20surface%20brightness%2C%20so%20ideally%2C%20a%20large%20single%20dish%20is%20needed.%20%0D%0AIn%20my%20talk%2C%20I%20describe%20how%20the%20DRAO%20synthesis%20telescope%2C%20a%20wide%20field%20interferometer!
 %20of%201km%20effective%20aperture%2C%20has%20been%20combined%20with%20the%200.3km%20aperture%20Arecibo%20telescope%20to%20produce%20ultra-low%20surface%20brightness%20continuum%20images%20of%20the%20sky%20at%200.4%20GHz.%20I%20describe%20some%20of%20the%20first%20results%20and%20discoveries.%20
bodytype: text
cals: cal10
contactemail: jkern at nrao.edu
contactname: Jeff%20Kern
ctime: 1332190158
day: 22
endtime: 1500
gmt_end: 1332453600
gmt_start: 1332450000
month: 03
mtime: 1332190158
notifyemail: jkern at nrao.edu
priority: -1
rd: 22
repeatmethod: numtimes
rm: 03
ry: 2012
starttime: 1400
timezone: 7
title: UNM%20Seminar
titlecolor: #000000
titlestyle: normal
transid: 399725
type: meet
year: 2012