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  <VOEvent xmlns="http://www.ivoa.net/xml/VOEvent/v2.0" xmlns:voe="http://www.ivoa.net/xml/VOEvent/v2.0" version="2.0" role="observation" ivorn="ivo://archive.aavso/archive/voevents#alertnotice458" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/VOEvent/v2.0  http://www.ivoa.net/xml/VOEvent/VOEvent-v2.0.xsd">
    <Description xmlns="http://jabber.org/protocol/pubsub#event">
      Alert Notice from the AAVSO
    </Description>
    <Who xmlns="http://jabber.org/protocol/pubsub#event">
      <AuthorIVORN>
        ivo://archive.aavso/
      </AuthorIVORN>
      <Author>
        <shortName>
          AAVSO
        </shortName>
        <contactName>
          Richard C.S. Kinne
        </contactName>
        <contactEmail>
          rkinne at aavso.org
        </contactEmail>
      </Author>
      <Date>
        2012-05-11T07:19:02
      </Date>
    </Who>
    <Reference xmlns="http://jabber.org/protocol/pubsub#event" uri="http://www.aavso.org/publications_files/alerts/alert458.shtml" />
    <What xmlns="http://jabber.org/protocol/pubsub#event">
      <Param name="aavsoNumber" value="458" />
      <Param name="event" value="AAVSO Alert Notice 458: Multiwavelength observing campaign on AE Aqr" />
      <Param ucd="meta.link.url" name="link" value="http://www.aavso.org/aavso-alert-notice-458">
        <Description>
          Link back to the AAVSO web page
        </Description>
      </Param>
      <Param ucd="meta.id" name="objectName" value="AE AQR">
        <Description>
          Standard name for the astronomical object
        </Description>
      </Param>
      <Param dataType="float" ucd="phot.mag" name="magnitude" value="11.4">
        <Description>
          Approximate magnitude of the object.
        </Description>
      </Param>
      <Param name="body">
        <Value>
          Dr. Christopher Mauche, Lawrence Livermore National Laboratory, 
and colleagues in Spain and Oman have requested AAVSO observations 
in support of their upcoming multiwavelength observations of the 
novalike intermediate polar cataclysmic variable AE Aqr with the 
Swift satellite, the MAGIC (Major Atmospheric Gamma Imaging 
Cherenkov) telescope on La Palma, Canary Islands, and telescopes
at other ground-based observatories in Serbia, Crete, and La 
Palma. Their goal is to study the extreme high-energy (gamma-ray) 
and high-energy (x-ray) behavior of this complex system. AAVSO
observations will be critical to the success of this campaign.

The MAGIC observations are scheduled for 2012 May 16 - June 1 and 
(pending approval) June 13 - 19. The table below gives UT times 
of MAGIC observations for each date. Swift observations correlated 
with the MAGIC times will be carried out each day as well, and 
ground-based photometry has been scheduled.

2012 May 16, 3:21-3:58 UT
17, 3:17-4:32
18, 3:13-4:47
19, 3:09-3:53
20, 3:06-3:49
21, 3:02-3:45
22, 2:58-3:41
23, 2:54-3:37
24, 2:50-3:33
25, 2:46-3:29
26, 2:42-3:25
27, 2:38-3:21
28, 2:34-3:17
29, 2:30-3:13
31, 3:28-4:40
2012 June 01, 4:15-4:40 UT
13, 1:31-2:34
14, 1:27-2:10
15, 1:23-2:06
16, 1:19-2:02
17, 1:15-1:59
18, 1:12-1:55
19, 1:08-1:51

B-band photometry is requested during and +/- 1 hour around the 
times of the MAGIC observations in order to correlate the 
multiwavelength observations of this campaign. To help establish 
the context for the B observations during the MAGIC observations, 
please begin making nightly B observations of AE Aqr now, and 
continue through the end of June 2012. Visual observations and 
photometry in other bands are also welcome. Particularly in May,
AAVSO observations are crucial because all but one of the
ground-based observatories doing optical photometry are too far
west to observe AE Aqr at this time.

AE Aqr, classified as (DQ+ELL), is a magnetic system containing 
a white dwarf pulsar and a main sequence star; it is an x-ray 
source and shows flares in U and B and in U, B, and V. According 
to observations in the AAVSO International Database, its range is 
approximately V=10.5-12.5; currently it is magnitude V=11.4. Dr. 
Mauche and colleagues carried out a successful multiwavelength 
campaign on AE Aqr in 2005 (AAVSO Alert Notice 326, 
http://www.aavso.org/node/1555/149).

Coordinates: R.A. 20 40 09.16 Dec. -00 52 15.1 (J2000.0)

Charts for AE Aqr may be plotted using the AAVSO Variable Star 
Plotter (http://www.aavso.org/vsp). A table of photometry values
for this field is also available there. Photometrists should 
use the 12.2 and 12.4 comparison stars.

Please report all observations to the AAVSO International Database
as AE AQR.

This campaign is being followed on the AAVSO Observing Campaigns 
page (http://www.aavso.org/observing-campaigns).

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.
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        <ObservatoryLocation id="TOPOCEN" />
        <ObservationLocation>
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          <AstroCoords coord_system_id="UTC-FK5-TOPO">
            <Time unit="s">
              <TimeInstant>
                <ISOTime>
                  2012-05-11T07:19:02
                </ISOTime>
              </TimeInstant>
            </Time>
            <Position2D unit="deg">
              <Name1>
                RA
              </Name1>
              <Name2>
                Dec
              </Name2>
              <Value2>
                <C1>
                  310.03816666667
                </C1>
                <C2>
                  -0.87086111111111
                </C2>
              </Value2>
              <Error2Radius>
                0.0
              </Error2Radius>
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          </AstroCoords>
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