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AM Her

Special Notice #401: AM Her NuSTAR observations April 5

April 3, 2015: Further to AAVSO Alert Notice 517 (www.aavso.org/aavso-alert-notice-517), Dr. Axel Schwope (Leibniz Institute for Astrophysics Potsdam, Germany) informs us that the NuSTAR X-ray observations of AM Her will take place on

2015 April 5  15:35 UTC - April 6 19:15 UTC

These NuSTAR observations overlap with the XMM-Newton observations scheduled for April 6.

Filtered photometry with standard filter (BVRI) is requested using the cadence given in Alert Notice 517.  

Alert Notice 517: Monitoring of AM Her urgently requested in support of XMM-Newton and NuSTAR observations

April 2, 2015: Dr. Axel Schwope (Leibniz Institute for Astrophysics Potsdam, Germany) has requested AAVSO observers' assistance in monitoring the magnetic variable AM Her in support of upcoming XMM-Newton plus NuSTAR (Nuclear Spectroscopic Telescope Array) observations.

The XMM-Newton observations are scheduled for 2015 April 06 02:37:02-15:07:02 UT. The NuSTAR observations have not been made final yet but are expected to run longer. A Special Notice will be issued when the NuSTAR schedule is known.

Alert Notice 184: Brightening of YY Dra (= DO Dra) AND Requests for monitoring (SS Cyg, EX Hya, VW Hyi, AM Her)

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 184 (May 17, 1994)

BRIGHTENING OF 1137+72 YY DRACONIS (= DO DRACONIS)

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