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Special Notice #171: Request for twilight observations of U Sco

AAVSO Special Notice #171

Request for twilight observations of U Sco
October 16, 2009

Further to AAVSO Alert Notice 367 and Special Notices 127 and 141, the AAVSO requests twilight observations of the recurrent nova U Scorpii prior to its solar conjunction in late 2009.  These observations are in support of the long-term campaign by Dr. Bradley Schaefer (LSU) to catch this very fast nova during its rise.  In 2008, the last ground-based observation of U Sco was made on 2008 November 2 (S. Kerr, Glenlee, QLD, Australia).  Observers are asked to do the best they can to observe U Sco as close to the Sun as possible.  For this project, fainter-than observations are just as important as positive ones, and observers are asked to report all observations as promptly as possible via AAVSO WebObs.

For more information on the U Sco campaign and its science goals, please see the following URL:

U Sco is located at the following (J2000) coordinates:

        RA: 16:22:30.80 , Dec: -17:52:43.0

Charts for U Sco may be plotted using AAVSO VSP:

Please promptly report all observations to the AAVSO with the name "U SCO".

This AAVSO Special Notice was prepared by M. Templeton.

Information on submitting observations to the AAVSO may be found at:


A Special Notice archive is available at the following URL:

Subscribing and Unsubscribing may be done at the following URL:
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